| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 030381000 | Chain | 73 |
| 20090119933 | Apparatus having a tool on an elongate pole and method of operating the apparatus - A powered apparatus having an elongate pole with a tool at a proximal region and a drive for operating the tool. A first operating component is repositionable between first and second positions to change a state of the drive. A second operating component is repositionable between: a) a locked position; and b) a released position wherein the first operating component can be changed from the first position into the second position. A handle assembly has a gripping portion with an extent that can be grasped by the user's one hand at a plurality of different locations along the extent of the gripping portion to control the operating components, including at a first location in a manner wherein with the elongate pole vertically oriented, a majority of a vertical weight force component of the apparatus is directed generally parallel to the length of a user's forearm below the user's one hand. | 05-14-2009 |
| 20110289786 | PORTABLE HAND-HELD POWER TOOL - A portable handheld power tool ( | 12-01-2011 |
| 20110078910 | ELECTRIC POWER TOOL - An electric power tool has an electric motor disposed in a main body and a power supply circuit electrically connected to the electric motor by wires to supply electric power to the electric motor. A switch is disposed in the power supply circuit so as to electrically open and close the power supply circuit. A movable member is supported by the main body, a detector is disposed in the main body to detect a movement of the movable member and the switch is configured to electrically open the power supply circuit when the detector detects the movement of the movable member. The wires connected to the electric motor are not connected to the detector so that the length of the wires is shortened. | 04-07-2011 |
| 20120023761 | BATTERY-POWERED PORTABLE CUTTING TOOLS - A battery-powered portable cutting tool such as a chainsaw or hedge trimmer, comprising: a housing ( | 02-02-2012 |
| 20090172956 | Flexible Chain Saw for Cutting Tree Limbs - A flexible tree cutting saw is operable from ground level for cutting limbs from a tree. The flexible saw includes a flexible cutting chain, about two to three feet in length, with a rope attached to either end and handles attached to the ends of the ropes. A telescoping device with a hook at its top end is used to place the saw over the tree limb with the flexible cutting chain on the tree limb, and the hook is designed to effectively grab the raised handle and lower it towards the user. The user grabs the handle and applies downward pressure and a back and forth motion to saw the limb. The flexible tree cutting saw use a jeweler's style chain with a plurality of substantially planar cutting segments, preferably made from stamped sheet steel, which are either linked together directly or linked together using oval chain links. The cutting segments have two cutting edges and preferably have teeth facing in one direction for a majority of the cutting span of the cutting chain. The planar cutting segments are mounted or linked in the chain so that the cutting edges of one segment are substantially perpendicular in orientation with respect to the cutting edges of the adjacent planar cutting segments, when the chain hangs naturally. | 07-09-2009 |
| 20100083512 | CHAIN SAW - A muffler includes a muffler body disposed on a lower portion of an engine and a passage that extends upward from the muffler body and is opened in an upper front portion of a chain saw body. Thus, exhaust gas can be discharged forward from the chain saw body, so that exhaust sounds can be dispersed forward. Consequently, the exhaust sounds propagated to an operator can be reduced and therefore a work environment can be improved. Also, since exhaust gas is discharged after the exhaust gas passes through a long passage extending upward from the muffler body, the exhaust gas can be cooled down. Accordingly, in the chain saw body typically covered with a synthetic-resin case in which exhaust outlets are formed on positions corresponding to outlets of the passage, peripheries of the exhaust outlets can be prevented from being discolored by heat of exhaust gas. | 04-08-2010 |
| 20100083511 | CHAIN SAW - A cooling fan includes: a hub; a plurality of cooling vanes provided along an outer circumference of the hub; and an annular connector for connecting the cooling vanes. The hub is provided with a through hole that axially penetrates the hub. A first cover on a case for covering an outward side of the cooling fan is provided with a first outer-air intake. A second cover for partitioning between the cooling fan and a crankcase and for covering an inward side of the cooling fan is provided with a second outer-air intake. With this arrangement, even when one outer-air intake (for instance, the first outer-air intake) adjacent to where the cooling vanes are provided is clogged by a large amount of dust generated during operations, the cooling vanes can breathe from the non-clogged other outer-air intake (for instance, the second outer-air intake) through the through hole, thereby restraining reduction in air flow. | 04-08-2010 |
| 20090007438 | Chain Saw - A chain saw includes a body in which an engine for driving a saw chain is laterally housed; a top handle provided above the body; and a muffler arranged below the engine, in which an exhaust outlet for discharging exhaust from the body side to the outside opens forward from the body side. Accordingly, not only the exhaust can be discharged forward from the side of the body, but also the exhaust sound can be propagated forward so that less exhaust sound is heard by the operator, thereby improving the work environment. | 01-08-2009 |
| 20090199415 | Power transmission assembly for tool mounted on an elongate pole - A powered apparatus having an elongate pole, a drive at a proximal region of the elongate pole and operable to rotate a first component on the drive, a tool at a distal region of the elongate pole with a second component that is rotatable to operate the tool, and a power transmission assembly for transmitting a drive force generated by rotation of the first component to the second component to thereby operate the tool. The power transmission assembly has a flexible drive link with a flexible length located between the drive and at least one other substantially inflexible drive part that is downstream of the drive link. The flexible length of the flexible drive link is greater than four (4) inches. | 08-13-2009 |
| 20120066916 | HANDHELD WORK APPARATUS - A handheld work apparatus has an electric drive motor ( | 03-22-2012 |
| 20090100689 | Chain saw - An oil tank ( | 04-23-2009 |
| 20090100688 | Chainsaw - A chainsaw includes: a body case | 04-23-2009 |
| 20100236082 | TWO-STROKE ENGINE AND MOTORIZED IMPLEMENT EQUIPPED WITH THE TWO-STROKE ENGINE - An exhaust port and an intake port are formed across a crankshaft with a flywheel provided at one end when viewed in a direction of an axis of a cylinder at a two-stroke engine. A pair of scavenging ports is then formed between the exhaust port and the intake port. Scavenging path covers are fitted to a cylinder block of the two-stroke engine and constitute part of scavenging paths that connect the scavenging ports and a crank chamber. The scavenging path cover close to the flywheel is positioned between an axis of the crankshaft and an exhaust path connected to the exhaust port or an intake path connected to the intake port. | 09-23-2010 |
| 20110030227 | Top-handle working machine - A top-handle portable working machine is provided with a grip configuration that makes it easy for a worker to manipulate the implement as intended in order to adapt to tasks in which accuracy, fineness, or an attractive finish is needed. | 02-10-2011 |
| 20120030954 | HANDHELD WORK APPARATUS - A portable handheld work apparatus includes a drive motor ( | 02-09-2012 |
| 20110173820 | MECHANIZED PORTABLE ELECTRIC TOOL WITH TWO SHAFTS - The invention relates to a portable electric tool having an active head motor-driven by an actuator and provided on the top end of a head-mounting shaft, the bottom portion of which has a handle, characterized in that a second shaft, or auxiliary shaft, is attached or arranged to be attachable onto the head-mounting shaft underneath and remote from said active head while forming, at least in the proximal portion thereof, an acute angle with said head-mounting shaft. The size of said auxiliary shaft being such that the free end thereof, provided with a handle, is located at or substantially at the handle being provided with the bottom part of the head-mounting shaft, one of said handles constituting the control handle of said actuator. | 07-21-2011 |
| 20120060381 | Hand-Held Power Tool - A hand-held power tool has a two-stroke engine with a cylinder with combustion chamber and a piston disposed therein that drives a crankshaft supported in a crankcase. In at least one piston position, crankcase and combustion chamber are connected by a transfer passage. An air passage supplies in at least one piston position combustion air to the transfer passage. A mixture passage for fuel/air mixture is provided. Air and mixture passages in operation are at least partially connected to each other. Part of the mixture passage is formed in a carburetor where a fuel port opens into the mixture passage. The mixture passage opens into the crankcase with a piston-controlled mixture inlet having a width in circumferential direction of the cylinder. Upon upward piston stroke the mixture inlet is connected to the crankcase with a portion of the width before a connection of air passage and transfer passage is established. | 03-15-2012 |
| 20110072670 | JOINT PROTECTING MEMBER FOR COMBINED FUEL AND HANDLE UNIT - A combined fuel tank and handle unit for a motorized, handheld tool includes a substantially closed volume, a handle, and a joint between two parts of the unit. The joint protrudes a distance beyond the surrounding surfaces. At least one rib is disposed at a distance from the joint on the underside of the tool. | 03-31-2011 |
| 20120117809 | CHAINSAW ARRANGEMENT - A chainsaw ( | 05-17-2012 |
| 20130000132 | Battery Driven Electric Power Tool with Brushless Motor - An electric power tool ( | 01-03-2013 |
| 20100011597 | METHOD FOR ADJUSTING THE AIR-FUEL RATION OF AN INTERNAL COMBUSTION ENGINE - Method for adjusting the air-fuel ratio of an internal combustion engine, in a fuel supply section thereof, such as a carburettor or a fuel-injection system, the fuel supply section having a control unit for adjusting the air-fuel ratio of the engine and the engine having an engine speed and an engine throttle ranging from zero throttle to full throttle. The method including: a) measuring the engine speed of the engine; b) comparing the engine speed to a first engine speed value; c) adjusting the air fuel ratio if the engine speed is lower than the first engine speed value; and d) repeating a) to c) until the engine speed is either greater than or equal to the first engine speed value. | 01-21-2010 |
| 20120297631 | WORKING APPARATUS AND A METHOD FOR OPERATING SAME - A working apparatus has an internal combustion engine which drives at least one tool via a clutch. The clutch starts the coupling process at an initial engagement speed when the internal combustion engine is accelerated. The internal combustion engine has a piston, an ignition device and an ignition timing control device. The control device provides a first ignition timing for idling and a second ignition timing for full load operation, which is earlier than the first ignition timing. A method for operating the working apparatus provides that the ignition timing is adjusted toward “late,” with respect to the first ignition timing, when the engine speed drops in a first speed range above the idling speed and below the initial engagement speed. | 11-29-2012 |
| 20120324743 | Battery Driven Electric Tool - A balanced electric power tool ( | 12-27-2012 |
| 030382000 | With guard means | 11 |
| 20090193669 | Hand-Guided Power Tool - A hand-guided power tool has a drive motor and a drive element connected to and driven by the drive motor. A working tool is connected to the drive element and driven by the drive element. A braking device is correlated with the drive element, wherein the braking device in a first state, in which the braking device is applied, blocks the drive element and in a second state, in which the braking device is released, releases the drive element so that the drive elements can rotate freely. The braking device has a brake lever and a sensor that detects the first and second states of the braking device. A control unit is provided, wherein an output signal of the sensor as a state signal of the first state or the second state is supplied to the control unit. The control unit, based on the state signal, controls devices of the power tool. | 08-06-2009 |
| 20130091715 | HANDHELD WORK APPARATUS HAVING A GUARD - A handheld work apparatus such as a stone cutter ( | 04-18-2013 |
| 20100229405 | Chain guard for a motor-driven chain saw - A chain guard for a motor-driven chain saw has a narrow casing with a front end and a back end. The casing has two parallel side walls and an upper wall and a lower wall connecting the side walls to each other. The casing is closed at the front end thereof and defines an opening at the back end. A device is provided on the casing for attaching the chain guard to the clothing of the operator, a rope, a carabiner or the like. | 09-16-2010 |
| 20100088904 | ARRANGEMENT FOR THE CAPTURE OF A BROKEN SAWCHAIN - An arrangement for the capture of a broken sawchain ( | 04-15-2010 |
| 20110203123 | Ktc injury prevention chain saw - A chainsaw that increases the level of operator safety by reducing or eliminating cut through and kickback injuries without impeding cutting operations, and increases operator comfort through ergonomics, therefore extending stamina. This is accomplished by a dual stage multi-hinged bar device that physically inhibits kickback and cut through injuries. The device, which returns to it's original position after cutting, will open up a total of 88 degrees to allow for cutting of items that are larger than the length of the guide bar. Relocation of the handles leads users toward physically holding the saw in such a manner that creates an ergonomically advantageous body position, reducing fatigue and strains. The body of the saw and the bar device will rotate 45 and 90 degrees both right and left while the handles and operators grip remain in the same position. The chainsaw also incorporates an easy to use chain adjustment. | 08-25-2011 |
| 20120102765 | CHAINSAW ARRANGEMENT - A chainsaw, comprising: a guide bar, a cutting chain and a driving unit arranged to drive the cutting chain around the guide bar. The guide bar defines a first longitudinal axis extending along a centre of the guide bar. The chainsaw further comprising a handle section for carrying and operating the chainsaw, wherein the handle section includes a control portion disposed on the upper side of the chainsaw. The control portion in turn includes a throttle lever for controlling the speed of the driving unit and the control portion has a left and a right side. The control portion defines a second longitudinal axis substantially extending along an upper side of at least a part of the control portion. An angle, A, between the first and the second longitudinal axes is between 14° and 45. | 05-03-2012 |
| 20100192391 | BRAKE SYSTEM OF CHAIN SAW AND CHAIN SAW - According to a chain saw braking system, engagement between a front end portion of a belt and a main body by an engagement member is released at the time of application of an impact. When a front end portion is pulled by the spring force of a compression coil spring, an elongate hole for protrusion is engaged with a protrusion to restrict a rear end portion from being moved in the same direction as the front end portion. Thus, it is possible to strongly tighten a drum by the belt to thereby reliably stop the movement of a chain. With this arrangement, the chain can be prevented from being damaged when a chain saw is accidentally dropped onto the ground due to an impact applied thereto. | 08-05-2010 |
| 20100064532 | Chain saw 3D relative positional monitoring and anti-kickback actuation system - A system effectuates increased cutting device safety through rapid detection of abrupt motion of the device, and/or the proximity of the device cutting elements in relation to its operator. An signal processor receives, generates and processes signals from multidimensional relative distances measurement module(s) and adjusts an electro-mechanical interface with the cutting device drive and/or power mechanism as well as actuators to counteract dangerous movements of the chainsaw. Distance measurement modules resident on the user may be spatially dispersed to protect multiple areas of potential interaction between device and operator. The signal processor receives and processes the sensor signals, determines motion and proximity measurements, compares the measurements to predetermined and set thresholds, and effectuates device interruption should thresholds be reached. The signal processor contains a signal processing algorithm which accounts for noise and invalid sensor measurements such as those made due to some external object physically disrupting proximity sensor-pair measurements. The system also records on nonvolatile medium chainsaw usage parameters for later diagnosis and analysis. The system also includes secondary relative distance measurement modules to be incorporated into an apparatus worn by a second party assisting the chainsaw user. The system also includes secondary accelerometers and proximity sensors as a back up measurement means. | 03-18-2010 |
| 20110146086 | Chainsaw and attachment therefor - A chainsaw and an attachment are disclosed. A lock strip is aligned with and near the bottom edge of the chain bar. A plurality of substantially C-shaped stop members engage non-circular indentations formed in the lock strip with one leg and the opposite side of the bar chain with the other leg. The substantially C-shaped stop members are large enough to go around the chain without touching the chain and to block brush and small limbs so as to be cut and from being dragged by the chain into the housing. A tightening screw is associated with each of the plurality of substantially C-shaped stop members for holding the C-shaped stop member in a tight relationship with both the lock strip and the chain bar. In one arrangement, each of the plurality of non-circular indentations is substantially square and the shape of the mating part of the leg of the substantially C-shaped stop member is also square to create a snug fit. The lock strip also forms a plurality of circular cutouts, one circular cutout in the bottom of each substantially square indentation, through which the tightening screw tightens the substantially C-shaped stop member and, therefore, the lock strip directly against the chain bar. The tightening screws and the substantially C-shaped stop members can be removed and the lock strip can be moved to different places along the bottom edge of chain bar, where the substantially C-shaped stop members and the tightening screws can be re-attached. | 06-23-2011 |
| 20110203122 | Kct injury prevention chain saw - A chainsaw that increases the level of operator safety by reducing or eliminating cut through and kickback injuries without impeding cutting operations, and increases operator comfort through ergonomics, therefore extending stamina. This is accomplished by a dual stage multi-hinged bar device that physically inhibits kickback and cut through injuries. The device, which returns to it's original position after cutting, will open up a total of 88 degrees to allow for cutting of items that are larger than the length of the guide bar. Relocation of the handles leads users toward physically holding the saw in such a manner that creates an ergonomically advantageous body position, reducing fatigue and strains. The body of the saw and the bar device will rotate 45 and 90 degrees both right and left while the operators grip on the saw remain in the same position. The chainsaw also incorporates an easy to use chain adjustment. | 08-25-2011 |
| 20110265334 | HANDGUARD FOR CHAINSAW - The invention relates to a chainsaw having a front hand guard ( | 11-03-2011 |
| 030383000 | With guide bar for cutting span | 39 |
| 20100083513 | STATIC COOLING ELECTRIC CHAIN SAW AND METHOD USED TO ACHIEVE SAID COOLING - Electric chain saw with static cooling features a cutting chain fitted so as to turn around a drive sprocket and a guide bar of oblong shape, and an electric motor effecting the drive of this chain, through the intermediary of the sprocket. The electric drive motor drive of the cutting chain is a brushless direct current motor enclosed in a housing formed by at least two components and made of a light metallic alloy, with one surface of the housing being in contact with the drive motor drive, to provide static cooling. | 04-08-2010 |
| 20110005088 | PORTABLE ELECTRIC CHAINSAW - A motor-driven portable chainsaw of the sort that includes a power source enclosed in a casing and a cutter device comprising a toothed chain and a chain guide. The saw being characterized in that the power source is a brushless direct-current electric motor controlled and switched electronically, with a rotor with magnets. A handle for holding and operating the saw is located underneath the motor assembly which supports the chain guide and includes said direct-current electric motor. | 01-13-2011 |
| 20110192039 | Weight-reduced guide bar of solid material - A guide bar ( | 08-11-2011 |
| 20110197458 | Power Tool with an Indicator - A power tool is provided with an indicator with a light source for generating a marking. A holding device is secured on the power tool by positive fit. The indicator is releasably secured on the holding device, wherein the holding device is secured to a grip pipe. The holding device has a geometry that is matched to the geometry of the grip pipe such that the holding device is securable in only one position on the grip pipe. | 08-18-2011 |
| 20100275451 | ATTACHING ARRANGEMENT FOR HAND-HELD MOTOR-DRIVEN TOOLS - The invention relates to an arrangement for attaching a bar ( | 11-04-2010 |
| 20080276469 | MANUALLY GUIDED IMPLEMENT - A manually guided implement, such as a power saw, a cut-off machine, or the like, having a drive motor for driving a tool of the implement. The drive motor has a drive shaft that is rotatably driven about an axis of rotation. The implement has a handle on which is disposed at least one control handle for the drive motor. Formed between the handle and the drive motor is a vibration space that is spanned by at least one anti-vibration element, at least one of which includes a coil spring, the longitudinal axis of which is disposed approximately perpendicular to a longitudinal plane of the implement. The vibration space is spanned by at least one connecting element, the longitudinal axis of which is inclined relative to a transverse plane of the implement that is disposed perpendicular to the longitudinal plane. | 11-13-2008 |
| 20090000130 | Chain Saw - A chain saw has a body in which a stratified scavenging 2-cycle engine for driving a saw chain is laterally housed and a top handle provided above the body. In other words, by laterally disposing the engine, an air port can be installed upward to a cylinder, and an air quantity adjusting device for feeding scavenging air to the air port and the carburetor can be well housed in the top handle. Accordingly, there is no need to separately prepare a space for installing the air quantity adjusting device, so that miniaturization can be achieved. | 01-01-2009 |
| 20120102766 | CHAINSAW ARRANGEMENT - A chainsaw, comprising: a guide bar, a cutting chain and a driving unit arranged to drive the cutting chain around the guide bar. The guide bar defines a first longitudinal axis extending along a centre of the guide bar. The chainsaw further comprising a handle section for carrying and operating the chainsaw, wherein the handle section includes a control portion disposed on the upper side of the chainsaw. The control portion in turn includes a throttle lever for controlling the speed of the driving unit and the control portion has a left and a right side. The control portion defines a second longitudinal axis substantially extending along an upper side of at least a part of the control portion. An angle, A, between the first and the second longitudinal axes is between 14° and 45°. | 05-03-2012 |
| 20100257743 | Systems and Methods for a Chainsaw Safety Device - Systems and methods for a chainsaw safety device are described. In some embodiments, a method comprises activating a chainsaw, receiving a first acceleration value associated with acceleration of the chainsaw, comparing the first acceleration value to a predetermined acceleration threshold, and deactivating the chainsaw based on the comparison. | 10-14-2010 |
| 20110232110 | Chain Saw - A chain saw includes a guide bar ( | 09-29-2011 |
| 20100218388 | CHAINSAW THROTTLE AND BRAKE MECHANISMS - Chainsaws are provided, each having a brake band disposed about a drum that rotates during advancement of the saw chain about the saw bar. An end of the brake band is biased to a position that draws the brake band tight about the drum to prevent advancement of the saw chain, and the throttle trigger of the chainsaw is associated with this biased end to push the band against the bias and release the drum when the throttle trigger is squeezed to drive the elements of the chainsaw that serve to advance the saw chain. Also provided are new concepts for associating gasing and braking elements with the throttle trigger. | 09-02-2010 |
| 20110072671 | CHAIN SAW - According to an aspect of the present invention, there is provided a chain saw including: an engine having: a crankcase; a cylinder attached to the crankcase; and a piston configured to reciprocate in the cylinder; a housing configured to accommodate the engine; and a guide bar, around which a saw chain is to be wound so as to be rotated by the engine, the guide bar being attached to the housing, wherein the engine has two surfaces substantially parallel to an axis direction of a crankshaft, the two surfaces being covered with and fixed to the housing, and wherein the engine is fixed to the housing with a fixing member at a side where the guide bar is attached to the housing. | 03-31-2011 |
| 20110162219 | HANDHELD ELECTRIC POWER TOOL - A handheld electric power tool comprises a main body supporting a tool, a motor housed in the main body and configured to drive the tool, a battery interface disposed in a back portion of the main body and configured to detachably receive a battery pack, and a top grip disposed on a top portion of the main body. In a planar view of the main body, a center axis of the top grip extends in front and back direction and a center of gravity of the battery pack attached to the battery interface is located at one side of a straight line passing through the center axis of the top grip. | 07-07-2011 |
| 20110061246 | COASTING BRAKE ARRANGEMENT FOR A POWER TOOL - A chainsaw having a brake arrangement comprising: a kickback brake drum ( | 03-17-2011 |
| 20120036725 | KICKBACK DETECTION METHOD AND APPARATUS - In various embodiments, a cutting tool such as a chainsaw may include a cutting member that is movable by an engine, one or more sensors configured to detect one or more of acceleration in a direction parallel to one or more axes of the cutting tool and rotational velocity about one or more axes of the cutting tool, and a microprocessor configured to cause movement of the cutting member to stop in response to receiving one or more signals from the one or more sensors. In various embodiments, a method may include receiving, by a microprocessor of a chainsaw, a signal from a gyroscope configured to detect rotational velocity about one or more axes of the cutting tool, and actuating, by the microprocessor, a braking system of the chainsaw to stop movement of a cutting chain around a perimeter of a guide bar in response to the signal. | 02-16-2012 |
| 20120055034 | CHAINSAW ARRANGEMENT - A chainsaw ( | 03-08-2012 |
| 20100037472 | Chainsaw guide bar and method of making - A chainsaw has a saw chain connected so as to be driven by the motor and a guide bar for guiding and supporting the saw chain as it revolves around the periphery of the guide bar. The guide bar has a channel formed by alternatively offset tabs, wherein each tab is offset from its immediate two adjacent tabs such that there is an open segment in the channel opposite each tab. There is a first set of tabs on a first side of the guide bar and a second set of tabs on the opposite side of the guide bar, wherein the alternatively offset tabs keep the cutting chain centered in the channel formed between the first set of tabs and the second set of tabs. | 02-18-2010 |
| 20120005905 | Vegetation Trimmer - A vegetation pruning device includes a cutting element; a guide bar for supporting the cutting element, the guide bar having a guide bar plane, the guide bar being pivotable in the guide bar plane about a fixed axis; a motor having a motor shaft for rotatably driving the cutting element; a motor housing for receiving the motor; a guiding mechanism connected to the motor housing, the guiding mechanism having a longitudinal axis; a handle assembly operable to move linearly along the longitudinal axis; and a transmission device for connecting the handle assembly to the guide bar through, the transmission device converting a linearly movement of the handle assembly to a pivoting movement of the guide bar, the cutting element thereby approaching or withdrawing from a workpiece to be sawn. | 01-12-2012 |
| 20120204431 | Handheld Working Tool - The present invention concerns a handheld working tool comprising a motor part ( | 08-16-2012 |
| 20090133269 | Chain saw guide bar attachment used to simplify the cutting of whippy branches and the like - A fingerlike apparatus that attaches to a chain saw guide bar. The apparatus is metal. A proximal end portion of the apparatus is continuously joined to a distal end portion. The distal end portion is positioned at an acute angle to the proximal end portion and away from the plane of the chain saw guide bar. The distal end portion is provided with a surface area away from the cutting plane of a chain saw upon which small limbs, branches or the like may be rested and/or manipulated by an operator before making a cut. | 05-28-2009 |
| 20110179652 | Chipper chain and motor-driven chain saw having a chipper chain - The invention relates to a chipper chain ( | 07-28-2011 |
| 20090077815 | Motor Chain Saw - A motor chain saw has a housing, a motor arranged in the housing, a drive pinion driven by the motor, and a guide bar connected to the housing. A saw chain is driven in circulation about the guide bar by the drive pinion. A lateral panel is arranged between the housing and an attachment section of the guide bar. The guide bar and the lateral panel each have a distance relative to the drive pinion upstream and downstream of the drive pinion when viewed in a circulating direction of the saw chain. The lateral panel has a first guide that guides the saw chain at a level of rivets of the saw chain, wherein the first guide extends approximately parallel to the plane of the guide bar. | 03-26-2009 |
| 030384000 | Including nondriving guide pulley | 1 |
| 20100229406 | CHAINSAW CARVING GUIDE BAR - A chainsaw guide bar adapted for carving and shaping a workpiece. In one embodiment, a guide bar includes a mounting end, a distal cutting end, and an intermediate portion offset from the longitudinal axis defined the mounting end. The guide bar may further include an idler sprocket mechanism operable to keep the saw chain engaged with the outer peripheral edge of the guide bar. In other embodiments, the guide bar includes an axially elongated recess providing an unsupported span of chain which is movable between undeflected and deflected positions when carving a workpiece. | 09-16-2010 |
| 030386000 | Including means to adjust guide bar relative to its support | 12 |
| 20090241353 | Toolless Apparatus for Guide Bar for Chain Saw - A chain saw is provided in which the tension of a cutting chain extending along a periphery of the guide bar may be adjusted without use of a tool. A locking knob is provided which engages with a cover of the chain saw. Protrusions of the locking knob fit within corresponding notches of the cover. The shape of the protrusions and the notches allow rotation of the locking knob in a first direction but not a second direction. Upon disengaging the locking knob from the cover, the guide bar may move relative to the engine housing and clutch cover to tighten the cutting chain extending along a periphery of the guide bar. | 10-01-2009 |
| 20090119934 | AUTO CHAIN TENSIONER - The invention relates to an auto tensioner of a chain saw. A spiral guide groove ( | 05-14-2009 |
| 20130086810 | CHAINSAW WITH CUTTING CHAIN TENSIONER - A saw having a power unit with a drive component and a housing for the power unit with a frame. A bar on the housing guides movement of an operatively positioned cutting chain driven by the drive component in an endless path. The bar is movable guidingly in opposite directions in a predetermined path relative to the housing to thereby vary tension upon an operatively positioned cutting chain. A bar fixing assembly has a knob that is turnable around a first axis relative to the housing in: a) a first direction to a tightened state; and b) a second direction to a loosened state. A first assembly resiliently bears against the knob to at least one of: a) inhibit turning of the knob around the first axis; b) provide a sensory indication to a user grasping and turning the knob that the knob is moving around the first axis; and c) reduce play in the knob. | 04-11-2013 |
| 20110167650 | TORQUE-LIMITED CHAIN TENSIONING FOR POWER TOOLS - A chainsaw ( | 07-14-2011 |
| 20100088905 | CHAIN SAW EQUIPPED WITH A DEVICE FOR ADJUSTING THE TIGHTNESS OF THE CUTTING CHAIN - The chain saw of the present invention includes a cutting device having a cutting chain mounted to turn around a drive sprocket and a guide bar which can be immobilized on a body by a jamming device and moved in two directions tending to move it closer to or further away from the drive sprocket relaxing the tension of the chain or ensuring its tension, respectively. The chain saw features a pushing device tending to automatically move the guide bar away from the drive sprocket, when the jamming device is loosened. The pushing device is formed by a slide against the rear end of which rests the rear end of the guide bar and an elastic component, preferably constituted by a helical spring resting, through the intermediary of its opposite ends against a fixed element of the body and against a surface of the front end of the slide. | 04-15-2010 |
| 20090007439 | AUTO CHAIN TENSIONER - The invention relates to an auto tensioner of a chain saw. A spiral guide groove ( | 01-08-2009 |
| 20120066917 | CHAIN SAW - A linear motion mechanism comprises a second rotating shaft having an external thread portion | 03-22-2012 |
| 20100146801 | TIGHTENING DEVICE WITH SWIVELLING HANDLING ARM AND APPLIANCE INCLUDING SUCH A DEVICE - Tightening device of the screw-nut type includes a tightening member, which can be rotated, and a rotary wrench for this tightening member, equipped with a handling arm. The wrench and the tightening member are joined by a connecting device in such a way that the wrench can swivel in relation to the tightening member around a swivel axis substantially perpendicular to the screwing axis of the tightening member. Thus, it can be placed in a rest position substantially perpendicular to the screwing axis and can rotate the tightening member around the screwing axis or rotated freely in relation to the tightening member around the screwing axis, over a range of angular clearance (a) of at least 170°. | 06-17-2010 |
| 20100293797 | Chainsaw tensioning device - A chainsaw has a cam lever and cam assembly that can be used to adjust the tension of a guide bar in the chainsaw. Once the tension of the guide bar has been lessened, the guide bar can be moved back and forth by using a chain-tightening knob and tightening mechanism. The movement of the guide bar causes the chain to tighten or loosen on the guide bar. | 11-25-2010 |
| 20110314682 | QUICK-TIGHTENING DEVICE FOR A CHAIN SAW AND CHAIN UNIT FOR SAME - The invention relates to a rapid tensioning apparatus as well as to a chain unit and a sword suitable for it, by means of which the placing of saw chain and sword on the main body of the chain saw can be readily carried out and a tensioning of the saw chain is made possible without problems. | 12-29-2011 |
| 20110179653 | CHAIN SAW - A chain saw an operator can easily strain a saw chain is provided. In the chain saw | 07-28-2011 |
| 20110308096 | CHAIN SAW - A chain saw includes a housing, a sprocket wheel which is provided in the housing for driving a saw chain, and a chain guide for guiding the movement of the saw chain. The chain guide extends out longitudinally from the housing and is movable longitudinally relative to the housing. The chain saw includes a chain tensioning device. The chain tensioning device comprises a driven member arranged on the chain guide and a driving member which drives the driven member to move the chain guide longitudinally and a rotating device rotating the driving member. A stepless clutch device is arranged between the rotating device and the driving member. The chain tensioning device presses the chain guide while it tensioning the saw chain. Thus it prevents effectively the chain guide from loosing after the saw chain is tensioned. The operation of the chain tensioning device is labour-saving. The chain tensioning device has a stable structure and it is hard to be worn. | 12-22-2011 |
| 030387000 | Multisectioned guide bar | 4 |
| 20130031793 | CHAIN BAR APPARATUS AND METHODS AND TOOL COMBINATIONS AND METHODS OF MAKING AND USING MOVING TOOL COMBINATIONS - Chain bar apparatus and methods are disclosed that may be formed from plastic, metal or other materials. Laser cutting of a chain bar core can provide improved structural characteristics, for example when adhesive is used to assemble the chain bar. Flow diversion elements can be used to optimize flow throughout the chain bar. | 02-07-2013 |
| 20110010952 | Guide Bar for the Saw Chain of a Power Saw - A guide bar for the saw chain of a power saw, including an elongated, planar main body having an outer periphery that is provided with a guide groove for guiding a saw chain. A direction-changing section is disposed at a free end of the guide bar and includes two side plates. At least one rivet is provided for securing the side plates to the main body, with the rivet extending through an opening in the main body. On at least one side of the main body, the opening is provided with a flared depression for receiving an adjacent element. | 01-20-2011 |
| 20080244915 | Carving and light utility chain saw guide bar - A lightweight chainsaw guide bar capable of carving and shaping wood and other solid materials with the ability to cut in curvilinear fashion in a tighter radius due to hollowing out or eliminating portions of the guide bar. | 10-09-2008 |
| 20120279074 | CHAINSAW CARVING GUIDE BAR - A chainsaw guide bar adapted for carving and shaping a workpiece. In one embodiment, a guide bar includes a mounting end, a distal working end, and an intermediate portion offset from the longitudinal axis defined the mounting end. In one embodiment, the guide bar includes an axially elongated recess providing an unsupported span of chain which is movable between undeflected and deflected positions for contouring a workpiece. The chain is engaged with and supported in a guide rail slot along the top peripheral edge of the guide bar. Various embodiments of the guide bar have an asymmetrical shape. The guide bar may further include an idler sprocket mechanism operable to guide movement of the saw chain along the outer peripheral edge of the guide bar. | 11-08-2012 |
