| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 072429000 | WITH MEANS TO DRIVE TOOL | 46 |
| 20100107722 | V-BELT DRIVE WITH A FORCE RETURNING DEVICE - In a wedge drive ( | 05-06-2010 |
| 20110219850 | RAM FOR METAL CAN SHAPER - An apparatus for forming a two-piece can comprising: a cylindrical housing, the cylindrical housing having a first end and a second end; a first round bushing having a longitudinal rectangular bore and received in the first end; a second round bushing having a longitudinal rectangular bore and received in the second end; a substantially cornerless rectangular ram which slides in the longitudinal rectangular bore of the first round bushing and the longitudinal rectangular bore of the second round bushing; a spring interposed between the first round bushing and the second round bushing and surrounding the substantially rectangular ram. | 09-15-2011 |
| 20100294016 | System and Method for Removal of Dents from Wind Turbine Masts - A system and method for removal of dents from wind turbine masts uses a dent pushing tool. The dent pushing tool includes a self aligning ram assembly with a central ram cylinder and removable adjustable length arms. At the end of one arm is a curved base. At the end of the other arm is a dent pusher plate. Removal of the dent is caused by extension of the central ram cylinder. | 11-25-2010 |
| 072452100 | Including cam-actuated support | 8 |
| 20100095738 | Roller holding unit - A pressing tool having a drive unit, a piston-cylinder unit with a fork-like receiver and an actual clamping pincer. The clamping pincer has a T-shaped mounting which, with a retaining bolt and a retaining bolt receiver, is connected to a fork-like receiver. In the fork-like receiver, a roller holder with two rollers is located. The fork-like receiver is part of the piston-cylinder unit. On actuation of the pressing tool, the piston-cylinder unit is pulled back and thus the roller holder with the rollers is moved forward relative thereto in an axial direction towards the clamping pincer. Thus, the rollers roll on roll flanks of the clamping jaws of the clamping pincer. The clamping pincer is pressed together by the rollers pressing apart the clamping jaws at the rear. Thus, the rollers are supported on a bearing block with sliding bearing surfaces. In the region between contact surfaces of the rollers with the sliding bearing surfaces and the contact line of the two rollers, there is a dirt collection chamber. | 04-22-2010 |
| 20110197648 | CRIMPING TOOL HEAD - A crimping tool includes a frame holding first and second crimping dies within a crimping zone. The frame has an opening providing access to the crimping zone. A ram is coupled to the first die and is configured to drive the first die toward the second die. A swinging arm is rotatably coupled to the frame between an open position and a closed position. The swinging arm closes the opening in the frame when in the closed position. The swinging arm has a pivot end pivotably coupled to the frame and a distal end opposite to the pivot end. The distal end engages the frame when in the closed position. A biasing member coupled to the swinging arm to bias the swinging arm toward the closed position to close the opening. | 08-18-2011 |
| 072452200 | Pivotal cam | 4 |
| 072452400 | Rotary cam | 4 |
| 20130036787 | Pipe expander - The expander is used in restoration of damaged irrigation pipe sliding the pipe over the Expander reaching the flattened point in the pipe force is applied to the horizontal slider moving the upper body to push the pipe to its original shape. Obviously, the expanding head may be of varied sizes, depending upon the size requirements of the work piece. | 02-14-2013 |
| 20120067105 | PRESS WORKING DIE ASSEMBLY - A press working die assembly includes a pad secured to an upper die holder so as to be movable upward and downward, a machining slide cam slidable laterally along a cam surface and having a bending edge at one end thereof, a rotatable rotary cam having a bending portion for forming a negative angle portion of a work, and a reciprocal driving apparatus configured to rotate the rotary cam to a work machining position, and the reciprocal driving apparatus includes a slide block having a cam surface for rotating the rotary cam in a predetermined direction on an front end side and a rotation impelling surface configured to rotate the rotary cam back to its original position, and a restoring action block configured to come into abutment with the rotation impelling surface of the slide block when the slide block retracts to restore the rotary cam to its original position. | 03-22-2012 |
| 072452600 | Radial cam face | 1 |
| 20080202194 | Device for automatically adjusting control cams in a forging machine - In a device for automatically adjusting the control cams of a forging machine, with a releasing means for releasing the operating position of a cam, the cam supporting shaft swingably supports, with a controlled movement with respect to the shaft longitudinal axis, radially extending brackets, in turn supporting a bar extending through the overall length of the control cam supporting shaft, the brackets being moreover provided, at each control cam, with cylinder-piston units including movable pins which can be engaged with recesses formed in the cams. | 08-28-2008 |
| 072452700 | Axial cam face | 1 |
| 20130074574 | WEDGE ACTIVATED ROTATING FILLER CAM UTILIZING A SADDLE FOR ROTATION - A rotating filler cam system including a lower die receiving at least one filler cam. The filler cam includes saddles that sit in saddle pockets of the lower die such that the filler cam is rotatably connected to the lower die. At least one wedge assembly is driven to contact the filler cam and rotate the filler cam from a first position to a second position. | 03-28-2013 |
| 072452800 | Linear cam | 2 |
| 20080216549 | SHEET METAL BENDING BRAKE - A sheet metal bending brake having a frame with a sheet metal support surface. A clamping jaw is movable relative to the frame support surface to clamp the sheet metal between the clamping jaw and the frame. The clamping jaw has a linear front edge. An elongated bending arm is pivotally mounted to the frame by an elongated flexible strap having spaced apart edges. One edge of the strap is secured to the bending arm while the other edge of the strap is secured to the frame such that the bending arm extends parallel to and closely adjacent the clamping jaw front edge. | 09-11-2008 |
| 072452900 | Inclined cam (eg., inclined plane) | 1 |
| 20090173135 | TOOL FASTENING DEVICE FOR A WEDGE DRIVE - The invention relates to an upper part V-belt drive ( | 07-09-2009 |
| 072430000 | Including magnet, solenoid or explosive | 3 |
| 20090205396 | EXPLOSION FORMING SYSTEM - An explosion forming apparatus ( | 08-20-2009 |
| 20110072877 | MARKING APPARATUS USING MAGNETISM - Provided is an apparatus for marking a metal using magnetism. The apparatus includes an upper body having an elastic unit insertion groove in which an elastic unit is inserted, an operation body through which a cylindrical part having a diameter less than that of the elastic unit insertion groove vertically passes, the operation body being coupled to a lower portion of the upper body, wherein an electromagnetic coil is disposed around the cylindrical part, a lower body through which an induction part having a diameter less than that of the cylindrical part vertically passes, the lower body being coupled to a lower portion of the operation body, a control part connected to the electromagnetic coil to control an electromotive force of the electromagnetic coil, a plunger including a head part inserted into the elastic unit insertion groove, a stamping rod inserted into the cylindrical part, and a stamping pin inserted into the induction part, and an elastic unit coupled to the stamping rod and inserted into the elastic unit insertion groove to elastically support the plunger. | 03-31-2011 |
| 20110308294 | Punch Press Oscillating Tool Insert - In certain aspects of the invention, punching machines and tools for punching machines are provided that include mechanical devices driven by a driving device of the punching machines and are used to oscillate a tool insert. Such machines and tools can provide an increased frequency of the oscillating movement of the tool insert. | 12-22-2011 |
| 072441000 | With means to selectably control movement of tool | 2 |
| 20100071437 | Calibration tool for fabricating disk springs - A calibration tool for fabricating disk springs. The tool includes a circular cylindrical tool body having an insertion bevel at its face end portion for receiving and centering a workpiece within an inner circumferential enveloping surface of the tool body. A tool surface at the inner circumferential enveloping surface aligns the workpiece relative to a forming tool disposed within the inner circumferential enveloping surface. The tool surface includes a first portion having an inner diameter that increases in size along the axial longitudinal direction of the tool body, and a second portion with an inner diameter that decreases in size along the axial longitudinal direction of the tool body. | 03-25-2010 |
| 072444000 | By means to connect and/or disconnect tool from its drive | 1 |
| 20090007622 | Mechanical Press Drive System and Method - A method for operating a mechanical press including at least one electric drive motor, a drive control for controlling the at least one motor, a ram, a mechanical element for translating rotational motion of the at least one motor to linear motion of the ram in a first rotation direction, into a linear motion of the ram arranged to be lowered and raised along a linear path for operating the press to carry out a press cycle including a pressing part and one or more non-pressing parts of the press cycle, and by providing a control output to the drive control such that the speed of the at least one drive motor is varied during at least one pressing or non-pressing part of the press cycle. The press may be reversed between production cycles. Also press and system including a such press. | 01-08-2009 |
| 072446000 | With means to permit tool positioning | 8 |
| 20130061648 | MULTI-TOOL TECHNOLOGY - A multi-tool having a plurality of tool-receipt openings adapted to receive respective tools. The multi-tool can be used on turret presses, single-station presses, other industrial presses, or other fabrication equipment. | 03-14-2013 |
| 20110277531 | EDGE-BENDING PRESS - The present invention relates to an edge-bending press ( | 11-17-2011 |
| 20090199613 | Battering ram - A battering apparatus including a battering element, an air source, a sensing device, a triggering mechanism, and a battering element release mechanism. Engagement of the sensing device activates the triggering mechanism which in turn activated the battering element release mechanism. The battering element is then released, and driven by air from the air source, moved to its extended position, causing the battering head of the battering element to engage an item to be broken. | 08-13-2009 |
| 20120192615 | Mechanical Press Adapted for Hot-Forming Processes - Mechanical presses adapted for forming processes. In one implementation the mechanical press includes two dies adapted for forming a piece, a motor, a crankshaft attached to the motor, a crank-connecting rod mechanism that attaches one of the dies to the crankshaft, and at least one lubricating bearing fixed to the crank-connecting rod mechanism. In one implementation the lubricating bearing comprises on an inner surface, a first area adapted for lubricating the crankshaft in a hydrostatic and a second area arranged substantially opposite to the first area adapted for lubricating the lubricating bearing in a hydrodynamic mode. | 08-02-2012 |
| 072447000 | To reposition line-of-action of tool | 2 |
| 20100126246 | VEHICULAR FRAME STRAIGHTENING APPARATUS, AND METHOD - An apparatus straightens vehicular structure, and comprises a U-shaped main frame, a pair of lift tower assemblies, and a pull tower assembly. The length of the main frame comprises spaced attachment structure for attaching the pull tower assembly. The lift tower assemblies are fastened to the main frame intermediate its length and function to fix the position of the vehicle relative to the main frame. The pull tower assembly is attachable to the main frame at a select attachment site and a tension member is attached to adjacent select vehicular structure. Thereafter tension may be applied to the select vehicular structure based from the attachment site to the main frame. Multiple tower assemblies may work in tandem with one another peripherally to the vehicle; a rear frame member may close the open end of the main frame; and vehicle support cross members may be included to support the framed vehicle. | 05-27-2010 |
| 20090188295 | SERVO-PRESS MACHINE - A servo-press machine determining whether or not a drive power supply voltage between a positive power supply path and a negative power supply path that connect a power supply device and a motor rotation control section is lower than an induced voltage of a servomotor, and correcting speed-related data based on slide motion information when the servo-press machine has determined that the drive power supply voltage is lower than the induced voltage. | 07-30-2009 |
| 072448000 | To position stationary tool of tool-pair | 2 |
| 20100126247 | FLASHING BENDER - A flashing bender system for bending flashing at a selectable range of angles. The flashing bender system includes a first bending tool and a second bending tool. The first bending tool is arranged to bend flashing to an angle of about 90° and the second bending tool is arranged to bend flashing at a selectable range of pitches. The flashing bender system may include either or both of the first bending tool and the second bending tool. The flashing bender system allows a user to bend flashing of a range of sizes at a range of angles over an unlimited length. Each of the bending tools includes a plurality of starter slots and angling channels. | 05-27-2010 |
| 20090126452 | PART IN DIE, DIE CHANGE PROCESS - A die change method includes providing a press apparatus having a base and a ram, and a first die set including an upper die member and a lower die member. The lower die member is supported on the base and the upper die member is mounted on the ram. The ram is lowered into a closed, home position to mate the upper and lower die members and to perform an operation on a workpiece disposed between the die members. The ram is released from the upper die member. The ram is raised a minimum distance to provide minimal clearance for removing the upper and lower die members from the press. The mated upper and lower die members are moved out of the press with the workpiece held between the upper and lower die members. | 05-21-2009 |
| 072449000 | Including gear-actuated tool support | 4 |
| 20120180545 | MULTIPLE MODE, BI-DIRECTIONAL UNIVERSAL BENDING APPARATUS - Apparatus and methods for use of synchronized plural epicyclical transmissions to stabilize and to drive an output gear of a machine capable of bending tubing, conduit, and pipe requiring high torque, as well as swaging, cutting, and threading. One embodiment of the apparatus includes multiple transmissions encircling and engaged with a centrally mounted motor. Another embodiment of the apparatus includes multiple transmissions, each engaged with a mounted motor. Transmissions can be equidistantly spaced around the perimeter of an output gear. | 07-19-2012 |
| 20110185785 | Servo Hemming Press - Servo hemming press includes a direct drive system powered with a centrally located common planetary gear servo drive. A pair of connecting rods can actuate a slide vertically up and down to close the hemming tools and can perform the desired hemming operation. A planetary gear box preferably with dual output shafts is directly coupled to the crank shafts through couplings. The bottom end of the connecting rod can be connected to a pivot pin block that is secured to the base of the press. A spring-type overload protector can be incorporated between the base and the pivot pin block to protect the press from possible overloading beyond the rated tonnage capacity. The desired torque to deliver the rated tonnage to perform the hemming operation is delivered directly by a servo motor connected to the planetary gear box, thereby eliminating a flywheel and clutch of earlier systems. | 08-04-2011 |
| 20100101299 | PIPE BENDING MACHINE HAVING AN IMPROVED MOVEMENT TRANSMISSION TO A BENDING DIE - A pipe bending machine having an improved movement transmission to a bending die comprises a body ( | 04-29-2010 |
| 20120011916 | MACHINE FOR THE EXPANSION OF PIPES - A machine is disclosed for the expansion of pipes for heat exchangers, including a machine frame equipped with a drive unit for pressing or pulling an expansion mandrel through a pipe as well as an expansion mandrel. In at least one embodiment, the machine includes at least one drive unit with at least one motor-driven drum as well as a band or wire guide which extends horizontally from an outlet of the drum and forwardly to the pipe, the drive unit including a set of lateral plates. In at least one embodiment, the drum is disposed between the lateral plates of the drive unit and is equipped with a band or a wire and is additionally adapted to press or pull a band or a wire with an expansion mandrel through a pipe, wherein the expansion mandrel is expandable. In at least one embodiment, the drum includes two lateral plates, a hub and a circular guideway, the hub including a driving gearwheel and at least two idling gearwheels arranged internally in and in engagement with a toothed rim in the hub, and wherein the circular guideway of the drum is formed by bearings disposed in a circle between the sides of the drum and along the outermost rim of the sides. | 01-19-2012 |
| 072450000 | Including link-actuated tool support | 1 |
| 20100000287 | Multi-mode hammering machine - The invention is a multi-mode hammering machine that operates in a rigid mode, a flexible power hammer mode and a machine press mode to contour, shape and form sheet metal products. In all three modes, a ram is linearly stroked toward and away from a fixed die by a common ram drive assembly that includes a lever drive assembly and a reciprocating lever. The lever drive assembly moves in a rigid non-flexing manner. The reciprocating lever includes a rigid mode and a flexible mode. A conversion pin is used to engage one and simultaneously disengage the other. The lever drive assembly includes a control link that interfaces with a stroke adjustment mechanism. The gap adjustment mechanism is located at the fulcrum of the reciprocating lever. Both stroke length and gap are adjusted independently during the operation while the ram is cycling. | 01-07-2010 |
| 072453010 | Including pneumatic- or fluid-actuated tool support | 17 |
| 20090293578 | System And Method For Ballizing And Measuring A Workpiece Bore Hole - A system and method are described for ballizing and measuring a workpiece bore hole. In one embodiment, a ballizing unit having a distal end removably coupled to a ballizing member moves the ballizing member from a first position within the bore hole to a second position. A metrology unit having a distal end removably coupled to the ballizing member moves the ballizing member from the second position back to the first position. A sensor detects a force exerted on the ballizing member by the workpiece at a third position, which is located between the first and second positions. | 12-03-2009 |
| 20110138873 | ROBOTIC PEENING APPARATUS - Solutions for robotic fastener peening in turbine machines are disclosed. In one embodiment, an apparatus includes: a peening machine having a peening head; a robotic apparatus including: a robotic arm coupled to the peening machine; and a base member coupled to the robotic arm, the base member mounted independently of the machine element; a vision system for locating a fastener on the machine element; and a control system coupled to the vision system, the peening machine and the robotic apparatus, the control system configured to control movement of the robotic apparatus and the peening machine based upon vision system data and spatial information about the fastener and the machine element. | 06-16-2011 |
| 20110302987 | Deep water oil pipe pincher - This invention is a hydraulic operated pipe pincher. It comprises a head segment having two hydraulic jacks linked with said head section, a sliding die head housing with said jacks connected to said sliding die head and a foot segment having a die linked with said foot segment. A boat is located on the surface of the water above where the pipe is to be pinched is located. The pipe pincher would be lowered and positioned around the pipe by way of a manipulator arm on a deep water submarine. The sliding die head would then be forced down against the pipe to pinch the pipe closed to restrict or nearly stop the flow of oil within the pipe. The dies are shaped to compress the pipe from each side equally. | 12-15-2011 |
| 072453020 | Multiple or staged drive means | 4 |
| 20110203345 | EXTRUSION PRESS FOR MAKING PROFILES OF NONFERROUS METAL - An extrusion press for making profiles of nonferrous metal has a ram, a hydraulic piston/cylinder assembly for moving the ram, a pump connected to the assembly for pressurizing same, and an electric motor connected to the pump for driving same. A multiphase source of electricity is connected via a controller to the electric motor for a soft start of the motor. | 08-25-2011 |
| 20100186478 | Hydraulic Cylinder With Three Positive Position Stops - A hydraulic cylinder is provided which allows for a mount plate, or the like, to be moved between three positions. The mount plate can be positively positioned in any one of three different positions by appropriately supplying or removing pressurized hydraulic fluid to hydraulic fluid ports on the cylinder. The provision of appropriate positive stops corresponding to each desired position avoids the necessity for complex and/or expensive hydraulic control mechanisms. The cylinder is believed to be particularly suited for performing piercing operations, involving a negative pierce, in hydro-forming operations. | 07-29-2010 |
| 072453060 | Pressure additive | 2 |
| 072453070 | Axially aligned pistons | 2 |
| 20090249856 | CUP-SHAPED MEMBER FORMING APPARATUS - A method and apparatus for forming cup-shaped members used in conjunction with a single-acting or a double-acting press having an outer punch assembly, an inner punch assembly and a base. A draw pad and a cutting edge are carried on the outer punch assembly, a draw horn is carried on the inner punch assembly and a blank and draw die is carried on the base. The draw pad and the draw horn oppose the blank and draw die such that the draw pad clampingly engages the blank and draw die in order to exert a clamping pressure on the pressure piston system having first and second pistons vertically stacked with respect to one another. The pressure piston system includes a damping member located within the pressure piston system for continuously increasing the clamping pressure during advancement of the outer punch assembly toward the base of the press. | 10-08-2009 |
| 20120272708 | DRIVE DEVICE FOR A BENDING PRESS - The invention relates to a drive device ( | 11-01-2012 |
| 072453120 | Pull-down press | 1 |
| 20090090161 | UNDERDRIVE-TYPE PRESS - [Object] An underdrive-type single action press capable of saving energy, saving space, and realizing high-precision formability in a well-balanced manner is provided. Particularly, a press capable of shortening a forming stroke, reducing overall height, exactly correcting the deflection of the slide or dies to improve adhesion of the dies to a workpiece, and realizing pressure equalization of a wrinkle holder is provided. | 04-09-2009 |
| 072453130 | Including fluid cushion for die opposite to ram | 2 |
| 20090158810 | DIE CUSHION DEVICE OF PRESSING MACHINE - In a die-cushion device of a press machine a controller controls an opening degree of a proportional flow-rate control valve to an appropriate opening degree in order to control the flow rate flowing out of a lower chamber of a hydraulic cylinder supporting a cushion pad before a slide collides against the cushion pad using a die-cushion pressure command commanded from a commander in advance and a slide speed signal inputted from a slide speed detector. By this, generation of a surge pressure when a slide collides against the cushion pad at a high speed is restricted. | 06-25-2009 |
| 20090126453 | Press Die Cushion Controller - A die-cushion controlling device includes: a position-command-signal outputting section for outputting a position command signal of a die-cushion pad; a position detecting means for detecting a position of the die-cushion pad; a position comparing section for outputting a position deviation signal corresponding to a deviation between the target position value based on the position command signal and a position detection value based on a position detection signal; a position controlling section for outputting a position-speed command signal based on the position deviation signal; a speed controlling section for outputting a motor-current command signal based on the position-speed command signal from the position controlling section; a servo amplifier for generating a current corresponding to the motor-current command signal; and an output switching section that, based on a press signal output when a slide has reached a bottom dead center, switches the position detection signal from the position detection means to the position command signal from the position command signal outputting section. | 05-21-2009 |
| 072453150 | Randomly manipulated or work-supported tool | 6 |
| 20100000288 | HYDRAULIC PRESSING AND/OR CUTTING TOOL AND MECHANISM FOR COVERTING A ROTARY MOTION INTO A TRANSLATIONAL OSCILLATING MOTION FOR THIS TOOL - A hydraulic pressing and/or cutting tool ( | 01-07-2010 |
| 20110048098 | ROCKER SWITCH - Disclosed herein is a hydraulic tool user interface. The hydraulic tool user interface includes a rocker section, a drain trigger section, and an activation trigger section. The rocker section includes a first end, a second end, and a first contact portion. The first contact portion is between the first end and the second end. The first contact portion is configured to contact a drain pin. The drain trigger section is at the first end. The activation trigger section is between the first end and the second end. The activation trigger section is configured to contact the second end. The activation trigger section is configured to contact an electrical switch. | 03-03-2011 |
| 072453160 | With handle for manual manipulation | 4 |
| 20080282763 | Hydraulic tool - A hand-held hydraulic tool including a hydraulic drive system comprising a pump; and a user control system for at least partially controlling operation of the hydraulic tool. The user control system includes a first user control at a first location having a first pump activation control switch and a first hydraulic drive system drain control switch, and a second user control at a second location having a second pump activation control switch and a second hydraulic drive system drain control switch. The hydraulic tool is adapted to be controlled by a user at either of the first or the second locations. | 11-20-2008 |
| 20090064754 | Hydraulic compression tool for installing a coaxial cable connector and method of operating thereof - A hydraulic compression tool for securing a compression type cable connector to a prepared end of a coaxial cable. The tool can include a hydraulic assembly having an axially extendable ram, and a connector frame detachably attached to the hydraulic assembly. The connector frame can include a cable cradle configured to accommodate cables of various sizes and a sleeve for engaging a cable connector. The connector frame can further include a sliding guide structure attached to the cable cradle. The sliding guide structure can include a sliding bar and one or more sliding guides. The sleeve can be attached to the sliding bar. The sleeve can be configured to accommodate connectors of various sizes. Activating the hydraulic assembly can cause the ram to extend, which in turn can cause the sliding bar to move along the longitudinal axis of the cable connector compressing the compression member and connector body into operative engagement with the cable. | 03-12-2009 |
| 20080302167 | Hydraulic tool with multiple handles - A hydraulic tool including a main section and a working head. The main section has a hydraulic drive system including a pump and a hydraulic fluid conduit system, and a first handle adapted to allow a user to grasp the main section with a first hand. The working head is connected to the main section and includes a frame, a ram movably connected to the frame, and a second handle extending from the frame. The ram is adapted to be moved on the frame by hydraulic fluid from the hydraulic drive system. The second handle is adapted to allow a user to grasp the working head with a second hand away from a compression area between the ram and an opposite anvil section of the frame. | 12-11-2008 |
| 072453170 | Riveting tool | 1 |
| 20110048099 | HAND-TOOL SYSTEM FOR INSTALLING BLIND FASTENERS - A tool for setting blind fasteners is disclosed. A stem of a fastener is engaged by a pulling head and its sleeve is also engaged by the pulling head. In an initial stage, a pump piston compresses fluid in a hydraulic pump, affecting movement of a drawbar and piston in relation to a stationary adaptor connected to the tool, pulling the stem in relation to the sleeve at a fast rate per pump. As the pulling force increases, pressure in the pump triggers a logic system to shift the tool into a high pressure mode, decreasing the effort to complete fastener installation. The logic system resets after each squeeze of the lever, minimizing the number of pumps necessary to complete the installation while keeping effort at a comfortable level. An adjustable pressure relief valve allows the fluid to return to the reservoir chamber, returning the tool to its initial condition. | 03-03-2011 |
| 072453180 | Having hydraulic or pneumatic return | 1 |
| 072453190 | Riveting tool | 1 |
| 20080302168 | Hydraulic Damper Valve - A breakstem rivet placing tool conventionally includes a flow restrictions for hydraulic fluid used to drive the tool in a stem pulling direction. This serves to prevent recoil of the tool due to rapid acceleration of an internal piston when the stem of the breakstem rivet breaks. Prior art flow restrictions create a jet of high velocity hydraulic fluid into the tool which may damage components by erosion. A revised fluid damper valve deflects and/or diffuses the fluid flow to avoid damage by erosion. | 12-11-2008 |
