2395 results about "Linear actuator" patented technology

An actuating mechanism for a powered furniture piece comprises a base, a seat rail operatively connected to the base, a back support bracket, a footrest mounting bracket, an ottoman drive link, a linear actuator, and a control link, such that when the linear actuator is extended to a first predetermined position, the footrest mounting bracket will be moved from a retracted position to an open position, the back support bracket will be maintained at an upright position, whereby the actuating mechanism will be disposed at a TV position, and when the linear actuator is extended to a second predetermined position, the back support bracket will be moved from the upright position to a reclined position whereby the actuating mechanism will be disposed at a fully RECLINED position.

A seating unit includes: a frame having a pair of arms, wherein each of the arms includes a cutaway portion in a lower rear area thereof, the cutaway portion configured to receive a tread and a riser of a riser arrangement; a backrest; a seat; a first footrest; a reclining mechanism; and a linear actuator. The reclining mechanism is connected between the backrest, seat, and first footrest, the reclining mechanism comprising a series of pivotally interconnected links and configured to move the seating unit between: (a) an upright position, in which the backrest is disposed at a first generally upright backrest angle relative to the seat, the seat is disposed at a first generally horizontal seat angle and at a first longitudinal position, and the first footrest is retracted below a forward portion of the seat; and (b) a fully reclined position, in which the backrest is disposed at a second backrest angle relative to horizontal that is shallower than the first backrest angle, the first footrest is extended in front of the seat, the seat has a second seat angle that is deeper relative to horizontal than the first seat angle, and the seat has a second longitudinal position that is rearward of the first longitudinal position. The reclining mechanism includes a footrest mechanism attached to the first footrest, the footrest mechanism configured to control relative movement of the first footrest relative to the seat. The linear actuator is attached to the reclining mechanism and the footrest linkage and configured to move the backrest, seat and first footrest between the upright and fully reclined positions. The linear actuator and the footrest linkage reside entirely below a front portion of the seat and in front of the cutaway portion of the arms.

A powered chair comprises a chair framework, which includes a pair of oppositely disposed armrests, a chair seat frame which is fixedly connected to the pair of armrests, a footrest, a backrest, a first linear actuator mounted upon the pair of armrests and operatively connected to the footrest, and a second linear actuator mounted upon the armrests and operatively connected to the backrest. When the first and second linear actuators are actuated, they can respectfully actuate or move the footrest and backrest, however, in view of the fact that the first and second linear actuators are not operatively connected to the chair seat frame, and in view of the additional fact that the chair seat frame is fixedly mounted upon the pair of armrests, the chair seat frame will remain stationary despite movements of the footrest and backrest, to any one of their multiple positions, as a result of the actuation of the first and second linear actuators.

The invention relates to the technical field of robots, and discloses a leg structure and a humanoid robot. A motor template; the hip joint assembly is mounted on the thigh bracket and comprises a rotary mounting frame which is in assembly connection with the motor template; the first end of the hip linear actuator is rotationally connected with the thigh support, and the second end of the hip linear actuator is connected with the hip joint assembly; the shank support is connected with the lower portion of the thigh support through a knee joint assembly; the knee joint linear actuator is arranged on the thigh support, and the driving end is connected with the knee joint assembly; the foot support is connected with the lower portion of the shank support through an ankle joint assembly; the first end of the ankle linear actuator is rotationally connected with the shank support, and the second end of the ankle linear actuator is rotationally connected with the foot support. According to the humanoid robot, the corresponding linear actuators are arranged on the thigh support and the shank support, the space on the thigh support and the space on the shank support are fully utilized, the inertia of the leg structure is reduced, the response speed is high when the leg structure conducts corresponding actions, and the dynamic stability of the humanoid robot is improved.

An electromechanical linear actuator having a threaded drive, which comprises a threaded nut connected to a cantilever tube and a lead screw connected to a hollow shaft of an electric motor via a rotationally fixed connection in such a way that, by a rotation of the hollow shaft and the lead screw, the threaded nut and the cantilever tube are linearly movable. An axial design length of the electromechanical linear actuator in the maximally retracted state is minimized in that a holding brake for the lead screw and a first rotary bearing for bearing the lead screw on a housing of the linear actuator are arranged within the hollow shaft.

A recliner chair, love seat, or sofa comprises a backrest, a seat, a footrest, and pairs of symmetrical, oppositely disposed linkage members for moving the backrest between upright and reclined positions, and for moving the footrest between retracted and extended positions. A protective cover is fixedly attached to the footrest such that opposite sides of forward portions of the pairs of symmetrical, oppositely disposed linkage members are covered so as to prevent parts of young children or pets from being caught within the forward portions of the pairs of symmetrical, oppositely disposed linkage members as the pairs of symmetrical, oppositely disposed linkage members are moving the footrest between its retracted and extended positions. In addition, a single linear actuator is utilized to move both the backrest between its upright and inclined positions, and to move the footrest between its retracted and extended positions.

According to the present disclosure, a vibratory linear actuator, a fastening structure for fastening the vibratory linear actuator to a fastening portion counterpart, and a cutter enabled to achieve a size reduction of the stator element while suppressing deformation of the fastening portion counterpart is provided. A vibratory linear actuator according to the present disclosure includes stator element capable of driving a movable element. This stator element includes stator body and fastening portion connected to stator body and capable of being fastened to fastening portion counterpart provided to another component. In a side view in a state where stator element is disposed in such a way one surface of stator body faces downwards, fastening portion includes: a pair of legs protruding downwards from one surface and facing each other; and a pair of protrusions that are provided to legs, respectively, and protruding inward in a direction in which the legs face each other.

An actuating mechanism for a powered furniture piece comprises a base, a seat rail operatively connected to the base, a back support bracket, a footrest mounting bracket, an ottoman drive link, a linear actuator, and a control link, such that when the linear actuator is extended to a first predetermined position, the footrest mounting bracket will be moved from a retracted position to an open position, the back support bracket will be maintained at an upright position, whereby the actuating mechanism will be disposed at a TV position, and when the linear actuator is extended to a second predetermined position, the back support bracket will be moved from the upright position to a reclined position whereby the actuating mechanism will be disposed at a fully RECLINED position.

The invention discloses a high dynamic response control method and system for a linear actuator of a humanoid robot, and the method comprises the steps: collecting the pressure and moment data of a contact point, carrying out the data preprocessing and signal calibration processing, and obtaining the calibration pressure and moment data; based on the calibrated pressure and torque data, performing high-frequency signal extraction to obtain dynamic change characteristics, and performing distribution diagram construction in combination with the pressure and torque data to obtain a pressure distribution diagram and a torque distribution diagram; performing data fusion processing according to the pressure distribution diagram and the torque distribution diagram, generating real-time contact area distribution, and performing dynamic prediction model construction based on the pressure and torque data to obtain a dynamic prediction model; according to the dynamic prediction model, actuator output force and joint angle adjustment amount are calculated, output torque and angle compensation amount are generated, torque distribution optimization and force feedback compensation are carried out, and an optimized final control signal is obtained. According to the method, high-dynamic response control of the controller can be realized.

A two-motor lift and recline system for a powered chair comprises a base, at least one footrest / ottoman support bracket for mounting and supporting a footrest or ottoman thereon, at least one seat rail for mounting and supporting a seat thereon, at least one backrest support bracket for mounting and supporting a backrest thereon, a first linear actuator mounted upon the base and operatively connected to the at least one footrest / ottoman support bracket for moving the at least one footrest / ottoman support bracket between extended and retracted positions, and a second linear actuator mounted upon the at least one seat rail and operatively connected to the at least one backrest support bracket for moving the at least one backrest support bracket between fully upright and fully reclined positions.

There is described a device for adjusting a seat position of a bicycle seat. The device allows a rider of a bicycle to adjust the tilt of their bicycle seat while the bicycle is in motion, without the rider having to first dismount. In some embodiments, the rider may also adjust the height of their bicycle seat at substantially the same time as the seat's tilt is adjusted, again without the rider having to first dismount. There are described a motorized embodiment in which one or more motors are used to drive a tilt actuator and a linear actuator, and a mechanized embodiment in which a source of pressurized air may be used to drive the linear actuator which in turn drives the tilt actuator.

An electric linear actuator has a housing extending along a longitudinal axis. A spindle is provided in the housing and extends along the longitudinal axis. A rod is coaxially coupled to the spindle and extends from a proximal end located in the housing to a distal end located outside the housing. The rod is movable along the longitudinal axis in response to rotation of the spindle. A circuit board is located in the housing adjacent the proximal end of the rod. The circuit board includes a linear inductive sensor having a linear axis oriented parallel to the longitudinal axis. The linear inductive sensor senses an actual position of the proximal end of the rod.

A linear actuator with a cushion mechanism includes: an actuator body (10) having a motor (13), a lead screw (151), an outer pipe (152) and a retractable pipe (153), the lead screw (151) is driven by the motor (13), the retractable pipe (153) has a screw nut (157); a rapid release mechanism (30) disposed on the lead screw (151) and releasing a driving relation of the motor (13) and the lead screw (151); and a cushion mechanism (50) disposed in the actuator body (10) and having an elastic member (51) and a deceleration structure (53). When the rapid release mechanism (30) is released, the lead screw (151) rotates while the retractable pipe (153) being loaded, the screw nut (157) compresses the elastic member (51) to make the deceleration structure (53) generate a break, thus a rotation speed of the lead screw (151) is lowered.

A linear actuator system includes a linear actuator and an integrated pump assembly connected to the linear actuator to provide fluid to operate the linear actuator. The integrated pump assembly includes a pump with two fluid drivers, each fluid driver comprising a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from a first port of the pump to a second port of the pump. The pump assembly also includes two valve assembles to isolate the pump from the system. The linear actuator system also includes a controller that establishes the pump in a normal mode of operation in which the prime movers are independently driven and switches to a fail-safe mode of operation in which only one prime mover is operated.

Embodiments described herein generally related to a substrate processing chamber and a method of processing substrate in a processing chamber. In one embodiment, a method of using a process kit for a substrate processing chamber disclosed herein. The method begins by positioning the substrate on a substrate support disposed in the substrate processing chamber. A plasma is formed above the substrate and a tilt and height of an edge ring is adjusted with a controller. The controller is coupled to a movement assembly having one of three linear actuators for tilting a sliding ring interfaced with the edge ring to change a direction of ions at one edge of the substrate.

A linear actuator comprising a shaft and a nut that translates within a linear range of motion in response to relative rotation between the nut and shaft, a stop positioned at a travel limiting position and having an inner portion connected to the shaft, a radially compliant outer portion axially overlapping the inner portion and configured to rotate relative to the inner portion, and a cam roller portion disposed radially between the inner and outer portions and configured to move relative to a neutral orientation in response to relative rotation between the inner and outer portions, and the outer portion configured to radially bias the cam roller portion towards the neutral orientation; wherein rotation of the outer portion caused by the nut rotating into the outer portion provides an outward radial load at the cam roller portion on the outer portion that is absorbed by the outer portion.

A friction stir spot welding apparatus includes a pin member formed in a solid cylindrical shape, a shoulder member formed in a hollow cylindrical shape, the pin member being inserted in the shoulder member, a rotary actuator that rotates the pin member and the shoulder member on an axis that is in agreement with an axial center of the pin member, and a linear actuator that linearly moves each of the pin member and the shoulder member along the axis. A tip-end part of the shoulder member is formed in a tapered shape.

A new and improved powered rocking lounger chair wherein the chair comprises a base assembly, a rocking assembly, a seat assembly, a backrest reclining assembly, a footrest assembly, a linkage assembly, at least one linear actuator for moving the seat assembly, the backrest reclining assembly, and the footrest assembly between a seating mode, a TV mode, and a reclining mode, and at least one limit stop interposed between the seat assembly and the base assembly such that when the chair is disposed in the seating mode, the chair is capable of undergoing rocking movements, whereas when the chair is disposed in one of the TV and reclining modes, the at least one limit stop will prevent the chair from undergoing rocking movements.

A drilling system configured to install a tap assembly into a ship skin is disclosed. The drilling system comprises a remotely-operated underwater vehicle and a drilling assembly configured to be operated by the remotely-operated underwater vehicle. The drilling assembly comprises a frame comprising an attachment element configured to hold the drilling assembly to a surface of the ship skin. The drilling assembly further comprises a drill actuation system comprising a linear actuator attached to the frame and a rotary actuator, wherein an actuation of the linear actuator is configured to move the rotary actuator relative to the frame to install the tap assembly into the ship skin by driving the tap assembly with the rotary actuator and the linear actuator.

The biped robot comprises a main body connecting part and leg parts arranged on the two sides of the main body connecting part, and each leg part comprises a thigh part, a shank part, a sole assembly and a connecting rod assembly used for connection which are sequentially connected; the thigh part comprises a thigh rotating joint, a thigh lifting linear joint, a shank bending linear joint and a thigh supporting plate, the thigh lifting linear joint and the shank bending linear joint are linear actuators and are oppositely arranged, and the two ends of the thigh lifting linear joint and the two ends of the shank bending linear joint are rotationally installed; the shank part comprises an ankle linear joint and a shank supporting plate, the upper end of the ankle linear joint is rotatably connected with the shank supporting plate, and the lower end of the ankle linear joint is connected with the sole assembly. The method has the beneficial effects that the load capacity of the biped robot is improved, and the requirements of the biped robot for large load, high response speed and high precision can be met.

A positive drive differential assembly including a differential with an input pinion configured to operably engage with a drive shaft so as to permit the drive shaft to rotate the pinion. A bi-directional overrunning clutch assembly is configured to transmit torque between the pinion and two drive axle segments. A pinion disconnect assembly is provided for controlling transmission of rotation to the pinion and including a rotary coupler. A linear actuator is connected to the rotary coupler and configured to translate the rotary coupler between connected and disconnected positions.

An end effector for a picking robot, and a method of use, the end effector comprising: a body; a shaft slidably coupled to the body and extending along a longitudinal axis between a proximal end and a distal end, the shaft having a vacuum lumen extending therethrough along the longitudinal axis; a suction cup coupled to the distal end of the shaft such that an interior volume of the suction cup is in fluid communication with the vacuum lumen; a vacuum generator connected to the vacuum lumen at the proximal end of the shaft and configured to create suction therethrough; and a linear actuator configured to slide the shaft along the longitudinal axis between an extended position in which the suction cup is relatively farther from the body and a retracted position in which the suction cup is relatively closer to the body.

Semiconductor processing tools with hexapod-based pedestal systems are disclosed and described. Such hexapod pedestal systems may incorporate a hexapod mechanism with a stationary mount that is connected via six linear actuators with a movable mount. The movable mount may support a pedestal located within a semiconductor processing chamber. The hexapod mechanism may be controlled so as to allow the pedestal to shift laterally so as to center the pedestal on a wafer supported by a wafer handling robot, as well as to angularly align a wafer supported thereby with the underside of a showerhead and to allow a wafer supported thereby to be subjected to any of a variety of movements during wafer processing operations that may promote increased wafer uniformity.

In one aspect the subject matter herein describes a cable tilt actuator for an aircraft propulsion unit. One embodiment comprises: a cable spool, fore and aft cable sections, a compression beam, a compression beam guide, and a linear actuator. As the linear actuator drives the compression beam, relative rotation is imposed between the compression beam and the spool. Described, in one aspect, is an embodiment configured to tilt an aircraft propulsion unit.

Systems and methods for minimally invasive computer-assisted telesurgery are described. A computer-assisted teleoperated surgery system includes a teleoperated instrument actuation pod. The surgical instrument actuation pod includes a plurality of linear actuators arranged around a surgical instrument. The linear actuators engage with actuator engagement members on the instrument and so drive movable parts on the instrument. The actuation pod is mounted on a teleoperated manipulator. Instrument pod mass is close to the teleoperated manipulator to minimize the pod's inertia, momentum, and gravity effects on the manipulator.

A shading apparatus with panels configured to provide shade volume over time, reduce wind load, and optionally generate solar energy. The shading apparatus with panels has first panel and second panel arrays. The first panel array moves up and down using a ganging assembly and linear actuator. The second panel array is fixed opposite the first panel array. Both panel arrays are connected to a rotateable spindle and central post. The shading apparatus is configured to reduce wind load with offset panels that provide passages between the offsets. Embodiments include control logic with various modes, including a mode for orienting the panels orthogonal to the sun over a period of time.

The invention relates to the technical field of zipper detection, and discloses zipper defect picture acquisition equipment, which comprises a lower rack, an upper rack is arranged on the upper side of the lower rack, an industrial computer is arranged on the right front side of the upper rack, and a control box is fixedly mounted on the front side of the lower rack. The zipper defect picture acquisition equipment is provided with a feeding arrangement rack, a feeding guide wheel mechanism, a tension adjusting mechanism and the like, the tension adjusting mechanism can tension and adjust a zipper strip to be detected, the feeding guide wheel mechanism guides in the zipper strip, the discharging guide wheel mechanism discharges the zipper strip, upper and lower industrial cameras can photograph and recognize the upper and lower surfaces of the passing zipper strip, and an annular illuminating lamp supplements light. A displacement conveying assembly, a camera shooting assembly and the like are arranged, a linear actuator drives a defective zipper to move to the inner side of the camera shooting assembly, upper and lower industrial cameras carry out shooting recognition learning, an industrial computer carries out deep learning training, finally, the zipper to be detected can be detected, defective items are detected and counted, the development period can be shortened, and the efficiency can be improved.

A seat assembly is provided with a seat frame and a seat support. A plurality of linear actuators or a camshaft are supported on the frame and oriented toward the seat support surface to each provide a localized percussive massage upon the seated occupant. Alternatively, a guide is supported upon the seat frame. A plurality of massage plates is provided on the guide. A plurality of massage nodes is each provided on one of the plurality of massage plates so that compression upon each massage plate flexes a region of each massage plate to extend each massage node forward to provide a localized massage upon the seated occupant.

A semi-powered foot and ankle prosthesis (100) has a foot member (128) coupled to the ankle frame (112) and movable with respect to the ankle frame (112). A linear actuator (144) is coupled to and between the ankle frame (112) and the foot member (128) to move the foot member (128) with respect to the ankle frame (112). The linear actuator (144) has a drive motor (150). A locking mechanism (104) selectively engages the drive motor (150) to selectively lock movement of the drive motor (150) to resist a force on the foot member (128) from backdriving the linear actuator (144).

The utility model discloses a linear actuator which comprises a mounting seat, a motor, an output seat, a guide mechanism and an elastic mechanism, and the mounting seat comprises a base plate and a mounting plate which are fixedly connected; a stator of a motor is fixed to a mounting plate, an output base is located on one side, in the first linear direction, of a rotor of the motor, and the output base is connected with the rotor, so that the output base moves in the first linear direction along with the rotor under the driving of the stator; the guide mechanism is arranged between the mounting base and the output base and used for guiding the output base to move in the first linear direction, the elastic mechanism is arranged between the mounting base and the output base and arranged in the first linear direction, and the motor, the output base and the guide mechanism are arranged on the same side of the mounting plate. Meanwhile, the maximum distance from the motor to the base plate is larger than the maximum distance from the guide mechanism to the base plate, so that all assemblies of the linear actuator are reasonably arranged, the size is reduced, the structure is more compact, and operation is more stable.