Class / Patent application number | Description | Number of patent applications / Date published |
074890320 | Carriage surrounding, guided by, and primarily supported by member other than screw (e.g., linear guide, etc.) | 34 |
20090133519 | Actuator - Actuator of the type where a driving rod ( | 05-28-2009 |
20090151488 | Adjusting Device for Seating and Reclining Furniture - An adjusting device for seating and reclining furniture includes a basis case, a screw rotatable axis, a guide area, an adjuster and a side cover. A notching is set at the upper end face of the guide area. A slider inside of the adjuster is combined with the upper wall of a perforating in the guide area by a connection portion. The width of the connection portion is set corresponding to the width of the notching of the guide area, and a perforated panel is set at the center of the connection portion to make a fender board impenetrate. The fender board may shield the notching of the guide area. A chamber is set in the upper end face of the adjuster corresponding to the position of the perforated panel from top to bottom. The chamber may hold a felt containing lubricating oil. There is a bearing chamber in the inner wall of the side cover. The bearing chamber may make the bearings embed in, and a bearing are pivoted and combined with the end of the screw rotatable axis. | 06-18-2009 |
20090199665 | FLOATING COLLAR CLAMPING DEVICE FOR AUTO-ALIGNING NUT AND SCREW IN LINEAR MOTION LEADSCREW AND NUT ASSEMBLY - An auto-aligning linear motion apparatus is provided. The apparatus includes a leadscrew. The apparatus also includes a nut arrangement configured to surround the leadscrew, wherein the nut arrangement includes at least a nut, a nut bracket, and a floating collar. A shoulder screw is inserted through a nut bracket slot of the nut bracket and a nut slot of the nut to rest at least partially within the floating collar. One dimension of the nut bracket slot is larger than a dimension through a cross-section area of the shoulder screw to enable the shoulder screw to move within the nut bracket slot to adjust the nut arrangement as the leadscrew is rotated to maintain a concentric relationship between the nut arrangement and the leadscrew. | 08-13-2009 |
20090314111 | LINEAR UNIT - A linear unit, having a drive unit which is mounted in a guide tube ( | 12-24-2009 |
20100139426 | ACTUATOR - An actuator has a frame and a slider body which are both made of extruded shapes of light-metal alloy. A first rail member is fastened to the frame by means of a simple construction. An upper sealing member is placed between the frame and the slider body. With the actuator constructed as stated earlier, the frame is an elongated extrusion of U-shape in transverse section whose side walls have first recesses of dovetail configuration to fit over first rail members and flanges. A slider has therein the slider body having second recesses of rectangular shape to fit over second rail members. There is further provided a driving unit to force the slider with respect to the frame. The first rail members each have the wedged configuration including tapered contours and dents, while the second rail members each have the rectangular shape. | 06-10-2010 |
20100147091 | DRIVE FOR A COFFEE BREWING DEVICE AND COFFEE BREWING DEVICE - The invention relates to a drive for a coffee brewing device that includes a first gearwheel having an internal thread that is pivot-mounted to an external thread of a guide cylinder so that the first gearwheel can be moved along a cylinder axis of the guide cylinder in response to a rotation, a second gearwheel for driving the first gearwheel along the cylinder axis, a housing, and a brewing piston coupled to the housing so that the brewing piston and the first gearwheel can be moved along the cylinder axis. A linear guide running parallel to the cylinder axis is also provided for guiding the housing such that a movement of the housing opposite to the linear guide in a radial direction to the cylinder axis is prevented. An axis of rotation of the second gearwheel is arranged in a provided distance relative to the linear guide. | 06-17-2010 |
20100170357 | Robot joint driving apparatus and robot having the same - Disclosed are a robot joint driving apparatus and a robot having the same, capable of minimizing a load applied to a drive motor by rotating a ball nut part such that a ball screw part performs linear movement in a power transmission structure using a wire and the ball screw apparatus. The robot joint driving apparatus includes a reversible drive motor, a ball nut part rotated according to operation of the drive motor, a ball screw part performing linear movement according to rotation of the ball nut part, a wire connected to the ball screw part from both sides of the ball screw part, an idle pulley rotatably installed at one side of the wire, and a joint part rotatably installed at an opposite side of the wire. | 07-08-2010 |
20110174099 | ADAPTERS FOR USE BETWEEN SURGICAL HANDLE ASSEMBLY AND SURGICAL END EFFECTOR - Adapter assemblies are provided for selectively interconnecting a surgical end effector that is configured to perform at least a pair of functions and a surgical device that is configured to actuate the end effector, wherein the end effector includes a first axially translatable drive member and a second axially translatable drive member, and wherein the surgical device includes a first rotatable drive shaft and a second rotatable drive shaft. | 07-21-2011 |
20110265588 | SPINDLE DRIVE HAVING ANTI-TURN MECHANISM - A spindle drive has a spindle nut ( | 11-03-2011 |
20110308340 | SPINDLE DRIVE FOR LONGITUDINALLY ADJUSTING A MOTOR VEHICLE SEAT - A spindle drive for longitudinally adjusting a motor vehicle seat is provided. The spindle drive comprising an adjustment rail that can be longitudinally adjusted relative to a body mounted rail and an adjusting mechanism that includes a driving worm connected to a driving device as well as a spindle nut, the external teeth of which mesh with the external teeth of the driving worm, and the internal teeth of which mesh with the external thread of a spindle. The spindle nut is formed by a hybrid spindle nut that has a functional part, which is located in the force flux between the driving worm and the spindle, and at least one strengthening part, deflecting crash forces from the adjustment rail into the spindle. | 12-22-2011 |
20120137803 | DRIVING DEVICE - A driving device having a housing tube connected to a stationary base part or a movable structural component part a protective tube connected to the other respective part a spindle drive which has a threaded spindle and a spindle nut arranged on the threaded spindle by which the housing tube and protective tube are movable axially relative to one another, and a rotary drive that drives the spindle drive via a clutch, a rotationally rigid interconnection thereof can be canceled when a determined torque is exceeded. A magnetic ring having a plurality of north and south poles is rotationally arranged near a stationary sensor element. The magnetic ring is arranged at the clutch that is connected to the threaded spindle, fixed with respect to rotation relative to it. | 06-07-2012 |
20120186374 | LINEAR SLIDE HAVING INTEGRAL CARRIAGE AND NUT ASSEMBLY - A linear slide is provided. The linear slide includes a guide rail, a carriage arrangement and a drive mechanism. The carriage arrangement includes a sidecar or nut arrangement for engagement with a screw of the drive mechanism. The nut arrangement is laterally offset from a carriage of the carriage arrangement. | 07-26-2012 |
20120260755 | Linear Motion Guided Screw Assembly - A linear motion screw assembly is provided herein which comprises (a) at least a first end support, (b) a screw shaft rotatably mounted to the first end support and defining a longitudinal direction, (c) a linear guide means mounted to the first end support and oriented parallel to the screw shaft, (d) a follower assembly mounted to the screw shaft and, associated therewith, an anti-rotation means in translatable contact with the guide means and movable in a longitudinal direction along the guide means, and (e) a cartridge non-rotatably mounted within said follower assembly, said cartridge including a guide nut having an axial bore through which the screw shaft is rotatably disposed. | 10-18-2012 |
20130104680 | LINEAR ACTUATOR DEVICE | 05-02-2013 |
20130133448 | INVERTED SPLINE RAIL SYSTEM - A inverted spline rail system is provided. The inverted spline rail system includes a drive motor that rotates a drive screw. The drive screw has a associated nut body. The nut body includes a attachment portion that a user can attach a device that requires linear motion control. Furthermore, the nut body is located inside of a cylindrical body that encases the drive screw. The nut body has guide teeth that mate with an internally splined guide rail of the cylindrical body that contains both the nut and the drive screw. The reciprocating nature of the guide teeth of the nut and the internally splined guide rail of the cylindrical body translate the rotational motion of the drive screw into linear motion of the nut body. The inverted spline rail system is protected from its operating environment by a seal. | 05-30-2013 |
20130139622 | MOVING DEVICE - A moving device is disclosed. A moving device includes a driving unit comprising a rotary shaft that is rotatable in a forward direction and a reverse direction by air pressure, a power delivery unit connected to the rotary shaft and adapted and configured to convert rotary motion of the rotary shaft to linear motion. | 06-06-2013 |
20130220042 | SLIDER APPARATUS - A slider apparatus of the invention includes a ball screw, first and second support members which respectively support the two end portions of the ball screw, a slider which includes a driving means for rotating a ball nut threadably engaging with the ball screw while rotatably holding the ball nut, and is disposed to be movable in the axial direction of the ball screw, first and second intermediate support members which are disposed to sandwich the slider, and each of which includes a support hole through which the ball screw passes and is movable in the axial direction of the ball screw, and a connecting member which engages with the first and second intermediate support members, and allows free movement of the first and second intermediate support members within the range of the full length of the connecting member. | 08-29-2013 |
20130276562 | HIGH LOAD CAPACITY SEAT ASSEMBLY AND DRIVE SYSTEM FOR SEAT ASSEMBLY - A drive system for moving a support assembly is disclosed. The drive system includes a lead screw configured for connection to the support assembly and defining a longitudinal axis. The drive system further includes an epicyclic gear assembly. The epicyclic gear assembly includes a carrier and a plurality of rotatable gears. The epicyclic gear assembly is rotationally coupled to the lead screw. Operation of the epicyclic gear assembly causes translation of the support assembly along the longitudinal axis. | 10-24-2013 |
20130319148 | Linear Actuator - A linear actuator includes a housing and a cover tube that is supported relative to the housing. A nut engages the cover tube so as to prevent rotation of the nut relative to the cover tube. A lead screw rotatably engages the nut, wherein rotation of the lead screw causes the nut to travel along the lead screw. | 12-05-2013 |
20130327167 | POSITIONING DEVICE - Temperatures of a base, a support member, and a support member are measured, and amounts of linear expansion of the base, the support member, and the support member due to temperature differences from a reference temperature are computed. An amount of linear expansion of a ball screw with respect to the support member is measured. An amount of linear expansion of a lead of the ball screw is computed based on the sum of the aforementioned amounts of linear expansion, and an amount of rotation of the ball screw is adjusted from an amount of rotation of the ball screw at the reference temperature, to an amount of rotation of the ball screw, which corresponds to the amount of linear expansion of the lead at a predetermined temperature. | 12-12-2013 |
20130333500 | Oblique-Driven Platform Structure - The present invention relates to an oblique-driven platform structure, comprising: a base, a first rail, a screw, a first sliding block, a second sliding block, an oblique slide rod, at least one second rail, at least one third sliding block, a work platform, and a motor. There is a trigonometric relation between the oblique slide rod, the screw and the second rail, and an oblique drive angle is formed between the oblique slide rod and the screw; Therefore, with the change of the stroke position of the screw, the displacement resolution of the work platform can still kept the same value when the work platform is driven. Moreover, the displacement of the screw stroke can be proportionally transformed to the feed rate of the work platform through the trigonometric relation, such that the driven work platform can get an extremely high displacement resolution without using any high-level servo motor. | 12-19-2013 |
20140137680 | MECHANICAL ACTUATOR WITH A HYDRAULIC DAMPER DEVICE - The invention relates to an actuator comprising a cylinder ( | 05-22-2014 |
20140157921 | LINEAR ACTUATOR - A linear actuator includes a motor, a transmission mechanism including a housing defining an accommodation chamber, a screw rod inserted with its one end into the accommodation chamber, a worm gear threaded onto the screw rod and coupled to the motor, two axle bearings mounted at the worm gear at two opposite sides and a top cover covering the housing, and a linking mechanism fixedly mounted in the housing and including a tubular member defining a longitudinal straight passage for receiving the other end of the screw rod and two sliding slots at two opposite sides and a screw nut formed of a linking member that is threaded onto the screw rod and two mating connection members respectively slidably mounted in the sliding slots and connected to the linking member. Thus, the supported worktable can be moved along the full length of the screw rod. | 06-12-2014 |
20140174224 | TRANSMISSION MECHANISM - A transmission mechanism includes a screw mandrel and a transmission assembly. The transmission assembly includes a first transmission member, a fixing member, a second transmission member, a first magnetic member, and a second magnetic member. The first transmission member is screwed with the screw mandrel. The fixing member is fixedly-connected to the first transmission member. The second transmission member is screwed with the screw mandrel and resisting against the fixing member to avoid rotating relative to the first transmission member. The first magnetic member is fixedly mounted on the fixing member. The second magnetic member is fixedly mounted on the first transmission member towards the first magnetic member to interact with the first magnetic member. | 06-26-2014 |
20140182405 | ELECTRIC ACTUATOR AND FAST RELEASING MECHANISM THEREOF - In an electric actuator ( | 07-03-2014 |
20140245846 | ASYMMETRICAL ANTI-ROTATION DEVICE AND SCREW JACK COMPRISING SUCH A DEVICE - The invention relates to an anti-rotation device for preventing the rotation of a driven element ( | 09-04-2014 |
20140245847 | SCREW ACTUATED PRESS UNIT - A screw actuated press unit for mounting parts with press fit includes a casing, an actuating screw rotationally journalled in the casing and coupled to a rotation motor, a nut assembly cooperating with the actuating screw, a thrust rod rigidly connected to the nut assembly and extending out of the casing for connection to a work piece, and a locking device effective to rotationally lock the nut assembly to the casing at rotation of the actuation screw, wherein the lock device includes at least three roller studs mounted on and radially extending from the nut assembly and arranged to guidingly cooperate with two parallel guide rails at the edges of an axially extending slot in the casing . The roller studs are spring biased in opposite directions in contact with the guide rails so as to eliminate rotational play between the nut assembly and the casing. | 09-04-2014 |
20140298933 | ANTI-ROTATE CYLINDER APPARATUS - A cylinder assembly includes a cylinder, a nut and screw assembly, a thrust tube that extends axially from the nut and out the cylinder, a drive assembly mounted to the cylinder for rotating the screw to effect axial translation of the nut relative to the screw, thereby causing the thrust tube to axially extend or retract relative to the cylinder, and an anti-rotate feature for restricting rotation of the nut relative to the cylinder. The anti-rotate feature may include a guide member coupled to the nut and including at least one key on one of the guide member or the cylinder and at least one corresponding slot on the other of the guide member or the cylinder that engages on the key. The guide member may be allowed limited movement relative to the nut and/or the cylinder thereby preventing binding of the nut relative to the cylinder. | 10-09-2014 |
20140326091 | Miniature Linear Positioning System - A linear positioning system is miniaturized by using a low profile guide extrusion supporting a low profile carriage that can be moved along the guide by a drive screw. The guide includes coplanar mounting flanges, C-slots for receiving electric wires, and angled recesses to serve as ways for guiding the carriage. The carriage has an opposed pair of projections fitting the guide ways to allow the carriage to move along the guide, and the drive screw and carriage are arranged closely above the guide profile to contribute to dimensional compactness. | 11-06-2014 |
20150007676 | FLOATING NUT AND CARRIAGE ASSEMBLY - A linear guide including a guide rail, a carriage, a drive screw and a connection arrangement is provided. The guide rail defines a linear travel path. The carriage is mounted to the guide rail for motion along the linear travel path. The drive screw is operably mounted to the guide rail. The connection arrangement couples the drive screw to the carriage to convert rotary motion of the drive screw to linear actuation of the carriage along the linear travel path. The connection arrangement provides a single degree of linear freedom between the drive screw and the carriage in a direction that is generally perpendicular to the linear travel path. The single degree of linear freedom permits relative motion between the screw and the carriage to relieve internal binding between the relative components. | 01-08-2015 |
20150059503 | THRUST CYLINDER WITH OFFSET DRIVE SCREW - A linear actuator having particular application for reconfigurable fixtures used to hold large area workpieces. The linear actuators include a thrust rod connected to a translatable nut member that is driven by a rotatable drive screw that has a longitudinal axis off-set from the longitudinal axis of the thrust rod that preferably is centrally disposed within the housing of the actuator. The off-set axis of the drive screw enables the drive screw per unit size to handle greater loads and run at higher speeds. Also, the use of a solid thrust rod enables the thrust rod per unit size to handle greater loads and be less expensive as opposed to being hollow when the drive screw is coaxial with the thrust rod. This arrangement also enables less material to be used to manufacture the linear actuator per unit size. The linear actuators may be used as an alternative to existing assemblies with central thrust rods. | 03-05-2015 |
20150143935 | BALL SCREW WITH SUPPORT DEVICES - A ball screw with support devices includes a nut base having two sides equipped with the support devices for preventing the screw from deflection. Two runner structures are provided near two ends of the screw. The runner structure includes a driving wheel and a driven wheel having different diameters and concentrically installed. The nut base is connected to the driving wheel via an active connecting element for driving the driving wheel to rotate. The driven wheel moves with the driving wheel and is connected to the support devices via passive connecting elements so that the support devices and the nut displace synchronously. By controlling a diameter ratio between the driving and driven wheels, the nut and the support devices displace with proportional speeds, thereby allowing the support devices to always stay at the two sides of the nut as designed and provide reliable support. | 05-28-2015 |
20160003332 | ACTUATOR THRUST ROD AND METHOD OF ASSEMBLY - A linear actuator includes an actuator housing ( | 01-07-2016 |
20160183683 | MOTOR ASSEMBLY FOR RECLINING FURNITURE - A motor assembly for reclining furniture includes a motor having one or more first fittings that correspond to one or more second fittings within a reclining furniture actuation mechanism. The first and second fittings are configured to be mutually connectable without tools or fasteners. | 06-30-2016 |