Class / Patent application number | Description | Number of patent applications / Date published |
074890330 | Carriage surrounded, guided, and primarily supported by member other than screw (e.g., linear guide, etc.) | 17 |
20090100950 | Pressure application driving unit of welding gun - The invention provides a pressure application driving unit of a welding gun that is safe, low in manufacturing cost, and compact as a whole by employing a hollow rotary shaft of the ordinary motor as it is and fixing a screw shaft fixing member to an end face of the rotary shaft, thereby reciprocating a pressure application shaft by the rotation of a screw shaft. The pressure application driving unit of a welding gun comprises a hollow through hole formed in a rotary shaft of a motor, a pressure application shaft having a portion pulled in the hollow through hole of the motor via a screw shaft to be driven by the motor, a hole for housing a tip end side of the screw shaft formed on the center portion of the pressure application shaft in the axial direction of the pressure application shaft, a nut at the end side of the pressure application shaft and a screw of the screw shaft are threaded with each other, the pressure application shaft side being nonrotatable, and a space formed in the hollow through hole and capable of housing the nut that is threaded with the screw shaft, wherein a screw shaft fixing member is fixed to tap holes formed on an end face of the rotary shaft of the motor and the screw shaft is fixed in the screw shaft fixing member. | 04-23-2009 |
20090151489 | Linear Actuator - A linear actuator comprises a reversible electric motor ( | 06-18-2009 |
20090183586 | Small Slider Unit - For achievement of a reduction in size, a slider unit comprises a mounting base | 07-23-2009 |
20090255354 | Linear actuating organ, in particular for the remote actuation of displaceable components in wind tunnel models - A linear actuating element for the remote control of adjustable components on wind tunnel models includes a housing and a gear motor for driving a threaded spindle. On the threaded spindle a threaded nut for moving a pusher rod is arranged. The threaded spindle is connected to the gear motor by a chain drive, wherein the threaded spindle and a gear motor axle are arranged so as to be substantially anti-parallel. Due to the anti-parallel arrangement of the gear motor axle and of the threaded spindle, the linear actuating element on the one hand comprises a compact design. Consequently the linear actuating element is in particular suited to the remote control of adjustable components on wind tunnel models with small spatial dimensions. On the other hand the linear actuating element makes it possible to generate very considerable mechanical actuating forces while at the same time providing very good positioning and repetition accuracy. | 10-15-2009 |
20090260463 | ELECTRIC ACTUATOR - In an electric actuator, a connector is coupled to one end of a screw shaft that makes up a displacement mechanism, the screw shaft being rotatably supported by first and second bearings. Further, on the other end of the screw shaft, a support ring is disposed through a holder, wherein the support ring is slidable along an inner circumferential surface of a piston rod. On the outer circumferential surface of a piston, a rotation-stopping member is provided, which includes projections thereon that project in a radial direction from the outer circumferential surface, the projections being inserted into grooves of said body. | 10-22-2009 |
20090260464 | ELECTRIC ACTUATOR - An electrically powered linear actuator having a thrust assembly, a motor with a hollow rotor surrounding at least a portion of the thrust assembly, and a lubricant passage for replenishing lubricant to the force transmitting components of the actuator. | 10-22-2009 |
20100064830 | DRIVE FOR ADJUSTING PARTS OF SEATING AND RECLINING FURNITURE - A drive for adjusting parts of seating and reclining furniture is provided, which includes: an electric motor, disposed within a motor cover of a cabinet and engaged with a gear connected to a lead screw via one end of a drive shaft of the electric motor, and a slider, for moving rectilinearly back and forth in cooperation with the lead screw. The slider is provided with a drive nut therein, which is screwed onto the lead screw to enable the slider to move rectilinearly. One or more positioning grooves are disposed on the slider in parallel with the nut. Guide rails are correspondingly disposed in the positioning grooves. One end of each guide rail is fixed to the cabinet and the other end of each guide rail is fixed to a top stopper. Therefore, a better adjustability is achieved within a limited inner space of the furniture. Moreover, the drive does not need to move, and the stroke length of the drive is independent from the cabinet size thereof, so that the drive has a low manufacturing cost and is easily assembled. | 03-18-2010 |
20100116073 | Actuator with an anti-loose structure - An actuator with an anti-loose structure comprises an actuator and an anti-loose structure. The actuator includes a first tube, a second tube and a drive assembly. The first tube is movably mounted on the second tube, and the drive assembly is drivingly connected to the first and the second tubes and provided with a drive gear connected to a power source. The drive assembly obtains the power through the drive gear to drive the second tube to life and descend with respect to the first tube. The anti-loose structure includes a first limit member and a second limit member that are both disposed on the drive screw of the drive assembly. The first limit member and the second limit member are respectively located at two ends of the drive gear to for avoiding the uncontrollable movement of the drive gear, which is likely to affect extending/retracting movement of the actuator. | 05-13-2010 |
20100139427 | Linear Actuator - A linear actuator capable of making a bed flat in emergencies is provided. | 06-10-2010 |
20100139428 | Electromotive Linear Drive - An electromotive linear drive ( | 06-10-2010 |
20100162838 | ELECTRIC ACTUATOR - An object of the present invention is to provide an electric actuator having a structure capable of reducing an external force or impact acting on an screw shaft when a piston rod is at a stretched position. An electric actuator | 07-01-2010 |
20120285278 | ACTUATOR AVAILABLE IN CONTROLLED ENVIRONMENT - A clean environmental actuator is less in weight, height in transverse section and compact in construction, even with ensuring accurate position control and conformable to high speed operation and high acceleration/deceleration. Both a bed and a slider are stowed in an enclosure and packings are in T-slots in side walls of the bed to seal clearances between the bed and the enclosure. The enclosure is composed of an end bracket to cover one end of the bed, a motor bracket to cover another end of the bed, a pair of side coverings to enclose the side surfaces and tops of the side walls of the bed, a sealing panel to cover an upward opening between the side coverings, and a table covering to overlay an area of the sealing panel lying on the slider and side areas of the table bulging out from side edges of the sealing panel. | 11-15-2012 |
20130160584 | ANGLE ADJUSTING MECHANISM - An angle adjusting mechanism includes a base seat, a driving assembly, a guiding assembly and an adjusting member. The driving assembly is mounted on the base seat. The driving assembly includes a driving member, a screw rod rotated by the driving member and a screw nut sleeved on the screw rod. The driving member is mounted on the base seat. The screw nut engages with the screw rod and is capable of moving along an axial direction of the screw rod. The guiding assembly is mounted on the base seat and guides the screw nut. The adjusting member is sleeved on the guiding assembly and rotated by the screw nut to a predetermined angle. | 06-27-2013 |
20130186217 | POWER SEAT SLIDING APPARATUS - A power seat sliding apparatus does not produce an unusual sound and a good operation feeling is obtained. The power seat sliding apparatus includes a first load transmission member fixedly attached to an upper rail and having a first surface that intersects with an axis of a threaded rod and a second surface that opposes the first surface with a space in between, and a second load transmission member installed in the space between the first surface and the second surface, fixedly attached to the threaded rod, and having a third surface on which to abut the first surface and a fourth surface on which to abut the second surface. The first surface and the second surface are concave curved surfaces and the third surface and the fourth surface are convex curved surfaces. | 07-25-2013 |
20140298934 | ANTI-ROTATION DEVICE FOR LINEAR ACTUATOR AND LINEAR ACTUATOR COMPRISING SAME - An anti-rotation device for use in a linear actuator comprises a hollow body permitting passage of a screw therein. At least one pair of legs extends longitudinally away from the hollow body and each leg of the at least one pair includes a first key feature configured for mating or complementary engagement with a second key feature of an housing used to enclose the screw, nut and anti-rotation device. In one embodiment, each leg is configured to extend or flex radially outward relative to an outer diameter of the hollow body. In another embodiment, the second key features of the housing are substantially longitudinally uniform, whereas the first key feature of at least one of the legs includes a longitudinally non-uniform feature. These pre-loading features induce self-centering of the anti-rotation device that reduces or eliminates play between the components and noise while also improving performance of the linear actuator. | 10-09-2014 |
20150040703 | SERIALLY-CONNECTED BALL SCREW PAIR AND PIEZOELECTRIC ACTUATOR MACRO-MICRO DRIVING AND GUIDING DEVICE - A serially-connected ball screw pair and piezoelectric actuator macro-micro driving and guiding device includes, from the bottom to the top, a sliding seat ( | 02-12-2015 |
20160025198 | Linear Module with a Support Device - A linear module with a support device includes a base; two pivot seats fixed on the base; a screw disposed between the two pivot seats; a rail fixed to the base; a movable platform and two support members sleeved onto the screw and movable along the rail; a wheel rotatably disposed on the platform; a connecting member; and a cover. The support members are located at two ends of the platform, and the wheel includes a first wheel portion and a second wheel portion smaller in diameter than the first wheel portion. The connecting member includes two connecting ends fixed to the support members and a connecting bottom surface for pressing against the second wheel portion. The cover includes two cover ends fixed to the two pivot seats, and a cover bottom surface pressing against the first wheel portion. | 01-28-2016 |