Abstract: A vehicle seat (1), in particular a motor vehicle seat, is provided including a seat substructure (5), a seat cushion (31, 33) with a seat shell (31) and an inclination adjuster (21) with a drive (43). The inclination adjuster (21) with drive (43) is used to change the inclination of the seat cushion relative to the seat substructure (5). The inclination adjuster (21) is loosely positioned on the seat substructure (5) or on the seat cushion (31, 33) and movably attached to the other respective sub-assembly.

Abstract: The invention relates to a seat frame of a motor vehicle seat with a seat carrier having two side parts that are oriented transverse to a front axis and to a rear axis, a pivotal bridge being pivotal about at least one of said axes, said bridge comprising a tie bar and two side arms, and with an adjustment device having a motor-driven drive unit. The drive unit is arranged for pivotal movement about a hinge shaft that is substantially centered on that axis of the two axes about which said pivotal bridge is pivotal. Said hinge shaft is shorter than the distance between the two seat parts and is not in contact with said two seat parts, but if at all with only one side part. There is provided at least one inner arm that connects said tie bar to said hinge shaft and is located in proximity to said drive unit.

Abstract: A vehicle seat assembly includes an anti-backlash mechanism in the seat adjustment gearing to reduce or eliminate gaps that cause looseness in the gearing.

Abstract: A power seat slide apparatus for a vehicle includes a first rail adapted to be fixed to a vehicle floor, a second rail adapted to be fixed to a vehicle seat and slidably supported relative to the first rail, a screw shaft screwed to a nut member which is fixed to the first rail, the screw shaft including an end portion and a stepped portion, a washer engaged with the stepped portion of the screw shaft, a gear member to which the end portion of the screw shaft is inserted, a fastening member provided at the end portion of the screw shaft, and a gear box fixed to an end of the second rail. The gear box includes a support bracket, a gear housing, and a plate. The stepped portion of the screw shaft is arranged in such a manner that the washer is connected thereto in the gear housing.

Abstract: A housing is held by a bracket of a vehicle seat and receives a worm wheel and a threaded shaft. The shaft is driven linearly through the worm wheel. One end of the housing contacts the bracket and includes a receiving recess, which is recessed in the axial direction of the worm wheel. A sensor unit is installed in the recess of the one end of the housing and includes a support wall, which supports the housing relative to the bracket in the axial direction of the worm wheel.

Abstract: A vehicle seat has a base, a front pivotable link indirectly pivotably attached to the base, a rear pivotable link pivotably attached to the base, a seat frame, a seat cushion supported on the seat frame, and a backrest that is mounted on the seat frame by way of a fitting defining a backrest pivot axis. The seat frame is pivotably attached to the front pivotable link. The seat frame is pivotably attached to the rear pivotable link in a manner that defines a pivot axis (41) about which there can be relative pivoting between the rear pivotable link and the seat frame. The height and/or inclination of the seat cushion is adjustable relative to the base by moving the pivotable links. The pivot axis (41) is positioned rearwardly of the backrest pivot axis in at least one position of adjustment of the seat cushion and/or of the backrest.

Abstract: A raiser seat for assisting a person from a sitting to a standing position is described. The seat comprises: a seat frame (4); a seat (10) supported for movement relative to the seat frame between a lowered position and a raised position; and a movement mechanism for moving the seat between the lowered and the raised positions. The movement mechanism comprises at least one cam (104) and the seat rests on the at least one cam such that rotation of the at least one cam results in movement of the seat relative to the seat frame.

Abstract: An electric vehicle seat storage structure for moving a seat between a seating position and a storage position is provided. The seat storage structure includes a frame having an axle positioned along a rear portion of the cushion and having a seat gear mounted to the axle. An actuator is provided for moving the seat between a seating position and a storage position. The actuator has an output gear positioned about an output shaft that is defined along the longitudinal axis of the actuator. The actuator is mounted within a portion of the frame, such that the output gear and the seat gear are meshed thereto, and such that the axis of the actuator is substantially parallel to the axle of the seat storage frame. Wherein when the seat is moved between the seating position and the storage position, the actuator is moved therewith.

Abstract: A seat lifting apparatus includes a seat cushion frame pivotally moving about a pivot center provided at a lower frame, a driven gear having a first end portion engaged with a driving gear connected to a driving mechanism, a pivotal link member provided between a second end portion of the driven gear and the seat cushion frame for absorbing a deviation between a locus of the second end portion of the driven gear and an arc-shaped locus of the seat cushion frame, and a side frame plate pivotally supported by the lower arm about the pivot center for supporting the seat cushion frame and including a sidewall portion arranged to be parallel with an operational plane of the driven gear and the pivotal link member. The pivotal link member and the side surface portion of the side frame plate are engaged with each other at plural portions.

Abstract: A method for controlling a seat which is equipped with: at least one controllable actuator (20) for moving two portions (16, 18) of the seat relative to each other; a controllable lock (26) for positive mechanical locking of the movement of the two portions of the seat, the lock (26) being able to be displaced between an engaged position opposite a complementary stop (30) and a disengaged position remote from the stop (30), which method comprises, in the event of an order for modification of a command for the actuator (20), steps for: verifying whether the two portions (16, 18) are in a critical range (I) of relative positioning, and as long as the two portions (16, 18) are in the critical range (I), applying to the actuator (20) a command which is different from the modified command.

Abstract: The purpose of this invention is to enhance the stability of seat up-down adjustment and the aesthetics of a wheelchair. The mechanism is structured by the cart frame, the seat, the linking rod mechanism and the linear motion actuator. There are at least two linking rod mechanisms, each mechanism is composed of several connecting frames and pivot-linked with each others and remains two distal ends for connecting to the cart frame and the seat. The linear motion actuator connects the cart frame and the seat, moves the seat up and down smoothly with help from the stable supporting of the linking rod mechanism. The whole adjustment mechanism is confined in between the seat and the cart frame, which minimizes the needed space and makes a nice figure.

Abstract: A pair of parallel moving surfaces, such as may be used for construction of an adjustable height table or seat are connected by a plurality of pantographs or “lazy tongs” mechanisms, each driven from a differentially threaded control rod. By suitable gearing connections among them, the pantographs are caused to operate in concert, and thus to keep the surfaces parallel as the distance between them is continuously varied. By appropriate mounting of the pantograph ends, the mechanisms are allowed to fold closer together at the minimum separation distance, thereby further minimizing this separation. The use of a set of springs assists in expansion from this minimized separation situation. The overall result is a simply operated mechanism for the continuous separation adjustment of a pair of parallel moving surfaces, together with the maximization of the range of separation adjustment between the two surfaces, concomitant with a minimization of the size and weight of the overall apparatus.

Abstract: An article of seating furniture is provided with a lift mechanism. The article can be a chair with a base and a seat that is pivotally connected to the base. A back is coupled to the seat and may be either fixed to the seat or rotatably coupled to the seat. An actuator is mounted to the base extending towards the rear of the chair. The actuator is pivotally coupled to the base on one end and is pivotally coupled to the seat on the other end. The actuator moves the seat between a generally horizontal position and a raised position. With the back rotatably mounted to the seat, a linkage bar can be added that extends from base front to a bracket that mounts the back to the seat. The linkage bar reclines the back as the seat is raised from horizontal position to the raised position.

Abstract: A motor vehicle seat lift assembly includes a seat pan and a seat frame positioned beneath the seat pan. Each of a pair of first linking members has a first end pivotally secured to the seat pan and a second end pivotally secured to the seat frame. Each of a pair of second linking members has a first end pivotally secured to the seat pan and a second end pivotally secured to the seat frame. A pinion gear is rotatable with respect to the seat pan. An actuator is operably connected to the pinion gear. A rack member has a plurality of teeth, with the pinion gear meshing with the teeth of the rack member. A first end of the rack member is pivotally secured to the first end of one of the first linking members and a second end of the rack member is slidably connected to the seat pan.

Abstract: A vehicle seat, especially an aircraft passenger seat, has at least one seat component which can be adjusted in its position, such as a seat part. The seat part can be mounted with its seat frame structure (3) by swivelable support legs (7, 11) above a floor structure (1). The support legs (7, 11) act on the seat frame structure (3) in pairs in the area of the front edge (9) and rear edge (5) of the seat of the seat part. An actuating mechanism is connected by action to a pair of support legs (7, 11) for producing a swiveling motion of the support legs (7, 11) causing a change in the position of the seat part. The actuating mechanism is coupled to the assigned pair of support legs (7, 11) by a differential mechanism (13) which converts the swiveling motion of the support legs (11) into a change of the effective length of the assigned pair of support legs (11). The length determines the vertical distance between the seat frame structure (3) and the floor structure (1).

Abstract: A mechanism for a vehicle seat is includes a seat bottom supported by the vehicle and a seatback coupled to the seat bottom. The mechanism includes a first adjustment mechanism connected to the vehicle seat and operable between a locked position and an unlocked position and a first powered remote activation device coupled to the first adjustment mechanism. The first powered remote actuation device includes a motor and a transmission element operable to toggle the first adjustment mechanism into the unlocked position.

Abstract: A mounting rail assembly for a drive motor coupled to operate a vehicle mechanism includes a vehicle frame member. A mounting rail is secured to the vehicle frame member and has a plurality of spaced apart first attachment features. A drive motor has a second attachment feature and is selectively attachable to any of the first attachment features of the mounting rail to provide a desired motor mounting location relative to the vehicle frame member.

Abstract: An office chair includes a base structure having a pan mounted thereon. A motor driven scissor lift is positioned on the pan that expands and contracts to raise and lower a chair member. A pair of buttons control the motor allowing a user to automatically raise and lower the chair member to a desired height.

Abstract: The present invention is directed to a vehicle seat suspension apparatus that is mechanically simple, inexpensive, occupies little space, and operates effectively with force inputs from any horizontal direction. The invention comprises a base, an isolator, and a plurality of links connected to both the base and isolator so that the isolator is suspended from the base and can move or swing horizontally in all directions relative to the base. The isolator has an upper plate with two flanges that depend from the plate. The base is positioned directly below the upper plate and between the two flanges. The links are connected to the base and the flanges of the isolator by means of ball and socket connectors that permit the isolator to move in all horizontal directions relative to the base. A travel limit system is used to permit adjustment in the travel of the isolator relative to the base.

Abstract: In the case of an adjuster (3) for a vehicle seat, in particular for a motor vehicle seat, with a drivable geared fitting, the driven geared fitting moving a component of the adjuster (3) and/or of the vehicle seat (1), a gear stage (21) with a fluctuating transmission ratio is connected upstream of the geared fitting.

Abstract: A housing includes a support surface that supports an axial force of a worm wheel. Ribs are arranged radially inward of a peripheral wall of one end of the housing and at least partially overlaps with the worm wheel in the axial direction of the rotatable member. Ribs contact a bracket and support the support surface of the gear housing relative to the bracket in the axial direction of the worm wheel when the axial force of the worm wheel is applied to the ribs.

Abstract: The present invention provides an adjustable furnishing such as a lift chair including a support member with a surface for supporting a user. A mechanism is connected to the support member for adjusting a position of the support member. One or more infrared radiation sensors are positioned beneath the surface of the support member to generate a signal when a heated body is detected in proximity to the mechanism. A controller is provided for receiving the signal from the infrared radiation sensors and inhibiting travel of the mechanism and the support member in a direction of the detected heated body.

Abstract: A mechanism for a vehicle seat is includes a seat bottom supported by the vehicle and a seatback coupled to the seat bottom. The mechanism includes a first adjustment mechanism connected to the vehicle seat and operable between a locked position and an unlocked position and a first powered remote activation device coupled to the first adjustment mechanism. The first powered remote actuation device includes a motor and a transmission element operable to toggle the first adjustment mechanism into the unlocked position.

Abstract: A cushion lift assembly for raising and lowering the front and rear portions of an automobile seat independently and/or simultaneously. The cushion lift assembly includes mounting members and a pair of connecting members interconnecting the mounting members. The connecting members are formed from three stamped members including a first elongated stamped member and two bracket members mounted near opposite ends of the first stamped member. Each of the stamped members includes a rib formed therein. The ribs cooperate to define an annular opening in which a pivot member is received.

Abstract: Structure of vehicle seat with lifter wherein the lifter, including lifter link elements, is operatively provided between a first element provided to vehicle seat and a second element adapted for connection with a floor of vehicle. The first and second elements are each of double wall structure having two spaced-apart walls. The lifter link elements are rotatably connected with the first and second elements by first and second pins, such that one portion of the lifter link elements is in a slidable contact with the two spaced-apart walls of first element, with the first pins passing through that one portion of lifter link elements and those two walls of first element, while another portion of the lifter link elements is in a slidable contact with the two spaced-apart walls of second element, with the second pins passing through that another portion of lifter link elements and those two walls of the second element.

Abstract: A vehicle seat suspension apparatus that is mechanically simple, inexpensive, occupies little space, and operates effectively with force inputs from any horizontal direction. The preferred embodiment includes a base, an isolator, and a plurality of links connected to both the base and isolator so that the isolator is suspended from the base and can move or swing horizontally in all directions relative to the base. The isolator has an upper plate with two flanges that depend from the plate. The base is positioned directly below the upper plate and between the two flanges. The links are connected to the base and the flanges of the isolator by means of ball and socket connectors that permit the isolator to move in all horizontal directions relative to the base.

Abstract: The present invention concerns an apparatus for adjusting the vertical and longitudinal position and the inclination of a pivotable seat part (2) of a vehicle seat (1) relative to a floor structure (4) of the vehicle, having a linkage that encompasses a linkage part, constituted by at least one articulated rectangle (ABCD), that has a base (AB), two rockers (BC, AD), and a coupler (CD). The base (B)is arranged in a plane extending substantially parallel to a longitudinal seat axis (X—X).The rockers (BC, AD)are pivotable about rotation axes extending substantially parallel to transverse seat axis. The linkage encompasses two linkage parts, each constituted by at least one articulated rectangle (ABCD;CDEF), that each have a base (AB,CD), two rockers (BC,AD;DE,CF),and a coupler (DC,EF).

Abstract: A frame of a motor vehicle seat with a longitudinal guide (20), a seat carrier (26), a front pair of oscillating cranks disposed between the longitudinal guide (20) and the seat carrier (26), and a padding support for a seat padding. A pinion (48) is rotatably disposed on one of the oscillating cranks (22, 23), an actuator (71) being associated with the pinion. A pivot unit (54) is disposed between the two oscillating cranks (22, 23) and is rotationally linked to the two oscillating cranks (22, 23) so as to be pivotal about an axial line. The pivot unit (54) is provided with a sector gear (62) that is centered on the axial line and meshes with the pinion (48), and an adjusting arm (64) is provided which is disposed between the pivot unit (54) and the padding support (30) so that the height of a front edge of the padding support (30) is adjustable by adjusting the sector gear (62).

Abstract: Seat lifting devices disposed between a seat support for supporting a seat cushion and a seat mount for mounting the seat support are taught that comprise a front and rear linking mechanisms movably interconnecting the seat support and the seat mount. These linking mechanisms are arranged and constructed to vertically adjust the seat cushion when operated. The rear linking mechanism comprises a first linking arm that is pivotally connected to the seat mount and the seat support, and a second linking arm that is pivotally connected to the seat support. The second linking arm is provided with a rear slide pin that slidably engages a rear guide slot formed in the seat mount. The rear slide pin is arranged and constructed to engage a plurality of teeth formed in the rear guide slot when a large force is applied to the seat support in a direction to separate the seat support from the seat mount.

Abstract: A vertical movement apparatus for a vehicle seat includes a seat bracket supported on a seat member, a floor bracket adapted to be supported on a floor member, a link supported by the floor bracket to move the seat bracket in the vertical direction of the seat member, a driving member operatively connected to the link to drive the link and move the seat bracket in the vertical direction, and a link control mechanism. The link control mechanism includes an elongated hole located in either the seat bracket or the floor bracket, a pin operatively engaged with the other of the floor bracket or the seat bracket and slidably disposed within the elongated hole, and a depression portion located on the inside surface of the elongated hole to prevent the pin from sliding within the elongated hole.

Abstract: A hydraulic drive and fluid control system for a mechanism having at least two fluid actuated cylinder includes a bi-directional motor/gear pump. A monolithic block manifold has intersecting bores formed therein in which valving and control mechanism for the fluid circuit is mounted. The fluid control system includes a variety of elements for providing smooth action of the cylinders at start, stop, and intermediate operations. These include piston-style accumulators, self-actuating fluid flow rate control valves and cushion valves.

Abstract: An elevation chair having a seat which is elevated by a driving mechanism, provided with a seat frame and a seat main body attached to the frame as to incline forward, the seat main body has an oscillation mechanism to automatically incline the seat main body forward at a predetermined height, and an angle detecting means to stop the driving mechanism when the seat main body reaches a predetermined inclination angle. And, the elevation chair has an automatic braking mechanism which releases wheels when a footrest attached to a position above a front wheel is laid to be horizontal, and brakes the wheel when the footrest is standing.

Abstract: The present vehicle seat has a framework 14, a plurality of zigzag springs 25, 25 attached between side frame member 17, 17 of the framework 14, and a height control mechanism 38 moving the framework 14 up and down relative to a vehicle body. The spring tip end 26 of each of the springs 25 is arranged at a position adjacent to the center line which vertically divides the side member 17, so that the distance between the spring tip end 26 and the center line is shorter than the distance between the spring tip end 26 and the upper edge 30 of the side member 17. Arms 51, 52 and an elongated link 53 of the height control mechanism 38 are arranged outside the side member 17.

Abstract: A motor and reversible drive move a child safety seat between a sitting and reclining position on a base secured by a vehicle safety belt. A drive shaft and gear system, double action winch and cord system, hydraulic drive, screw drive, or other drive system positioned within an enclosed base move the safety seat reversibly. A remote control operable by the driver of the vehicle controls the seat motor. An interconnecting system between the safety seat and the base maintains the safety seat in proximity with the vehicle seat back. The electric motor may be battery powered or plugged into the cigarette lighter of the vehicle.

Abstract: A lift seat specifically suited for assisting an individual from a seated to a standing position or from a standing to a seated position. The lift seat has a hinged seat platform that is pivotally coupled with a base platform and a lift link assembly coupled to a wheeled carriage. The wheeled carriage is driven linearly by a motor powered lead screw that operates in either direction of rotation to advance the position of the carriage. The movement of the carriage in one direction causes the lift link assembly to raise the seat platform while the movement in the opposite direction causes the platform to lower.

Abstract: A power-actuated chair-type elevating apparatus for moving a user to a desired position includes a slidable base having an upright lower tube-extended from a top thereof, a table having a downward extended upper tube axially movably covering the lower tube, an elevating mechanism mounted in the upper and lower tubes to elevate or lower the table relative to the base, and a seat pivotally supported on two bent tubes and three links. The bent tubes are fixedly connected at another end to the upper tube. The three links are coaxially and pivotally connected at a first end to one another, and pivotally connected at a second end to the seat, the base, and the upper tube, respectively. When the table is elevated, the seat is also elevated and forward inclined for the user sit thereon to lean against the table without the risk of falling off the seat.

Abstract: A seating device for maneuvering a body part comprising a fully adjustable chair including a base assembly, an occupant supporting assembly and an elevator assembly including drive mechanisms for raising, lowering and tilting the occupant supporting assembly. The chair has a head rest, leg rest, chest rest and a plurality of arm rests. The chair has full adjustment in all axes: rotation around a vertical central axis; vertical height adjustment; fully adjustable seat back for proper lumbar support; and tilt of the seat. The base assembly includes a power unit biased toward the floor. The chair permits support of the occupant with a full range of adjustment so that the occupant can have proper positioning for selected medical procedures and body part positions.

Abstract: A vehicle seat comprising a back and a seat proper which includes a rigid frame supported by a raising mechanism for moving the seat upwards or downwards, the raising mechanism being controlled by an actuator which comprises a tube provided with a nut and a screw which co-operates with the nut, the screw being provided with a free end situated inside the tube, the raising mechanism further comprising an elastically-deformable member for assisting the motor of the actuator. The elastically-deformable member is housed inside the tube of the actuator between the free end of the screw and a support element secured to the actuator tube.

Abstract: A vertical movement apparatus for a vehicle seat includes a seat bracket supported on a seat member, a floor bracket adapted to be supported on a floor member, a link supported by the floor bracket to move the seat bracket in the vertical direction of the seat member, a driving member operatively connected to the link to drive the link and move the seat bracket in the vertical direction, and a link control mechanism. The link control mechanism includes an elongated hole located in either the seat bracket or the floor bracket, a pin operatively engaged with the other of the floor bracket or the seat bracket and slidably disposed within the elongated hole, and a depression portion located on the inside surface of the elongated hole to prevent the pin from sliding within the elongated hole.

Abstract: A chair assists rising movement so that seating and rising can be comfortably performed with safety and comfort. The chair assisting rising movement is separated into a reclining block, a mount base block, and an intermediate base block. A backrest and the intermediate base block are pivotally supported by a first link while the mount base block and the intermediate base block are pivotally supported through a second link and a third link, provided in front and rear. The first link is rotated for moving the backrest from a stationary position to a rearward inclined condition. The second link and the third link are respectively rotated to raise the intermediate base block and a seat surface of the reclining block from stationary positions to specified heights.

Abstract: A seat apparatus is provided for a vehicle comprising a first mechanism for moving a seat horizontally relative to the floor of the vehicle and a second mechanism movably mounted to the first mechanism for moving the seat vertically relative to the floor of the vehicle. The second mechanism includes at least one link and a motor drive assembly operatively associated with the link to move the seat vertically. The seat apparatus further includes a third mechanism for moving a seat belt to adjust for vertical and horizontal movement of the seat in order to insure that the seat belt will remain stationary relative to an occupant seated on the seat. The third mechanism is responsive to the motor drive assembly for moving the seat belt simultaneously with vertical movement of the seat.

Abstract: A height adjustable seat for wheelchair having a frame, wheels, a wheelchair seat and back operably connected thereto includes a base with connector for connecting the base to the frame of the wheelchair, a seat, and an elevator operably connecting the base and the seat for adjustably elevating the seat to a selectable height, a remote control therefor, and wherein there are provided an anti-pinch point covers and torsion spring mechanisms to aid the elevation of the seat.

Abstract: A spindle drive for adjusting structural components of a motor vehicle seat relative to one another includes a casing having opposite end walls with openings therein, a spindle nut disposed in the casing and having a pair of opposite ends and an internally threaded bore extending therethrough between the opposite ends and generally aligned with the openings in the opposite end walls of the casing, an externally threaded spindle extending through the casing and openings of the end walls thereof and also threadably received through the internally threaded bore of the spindle nut so as to extend in opposite directions from the opposite ends of the spindle nut, the spindle having an end stop attached thereon such that one of the opposite ends of the spindle nut faces toward the end stop on the spindle, and at least one collar attached to and extending outwardly from the one end of the spindle nut and about the spindle and having an end surface facing toward the end stop on the spindle such that as the spindle is

Abstract: A seat air duct includes a floor duct fixed to the floor surface of vehicle cabin and flexible ducts. The upper wall of the floor duct is partially formed by flexible slide walls. The flexible slide walls are formed in an accordion and stretch and contract to follow a front-back stroke of a front seat. The flexible ducts stretch and contract to follow a vertical stroke of the front seat. In this way, since the flexible slide walls and the flexible ducts are independently provided, the seat air-conditioning unit effectively follows the front-back and vertical strokes of the passenger seat, thereby improving a seat air-conditioning performance.

Abstract: A device for height adjustment of a vehicle seat has a drive motor, transmissions having different lifting strokes and operating synchronously, one of the transmissions reaching an abutment earlier than the other of the transmissions, a housing provided for the transmissions and having abutment surfaces, and an abutment surface arranged so that at reaching a maximum position of a vehicle seat a transmission housing element abuts against the abutment surface so that a braking moment which exceeds a drive moment of the drive motor is produced.

Abstract: A vehicle seat has a seat frame which is arranged in a vertically adjustable manner above a seat underframe. A backrest part is mounted on the seat frame, and a seat cushion carrying part, for adjusting the seat cushion depth, is displaceably disposed by an end area in two guides. The other end area of the seat cushion carrying part is supported by two additional guides. The additional guides are supported by way of a supporting construction past the seat frame directly on the seat underframe.

Abstract: A reduction gear for a vehicle seat is provided with a worm (7) connected to an end of a drive shaft (31a) and formed integrally with and on a common axis with a threaded portion (71) of the worm (7), a worm wheel (8) formed on a common axis with an output shaft (82b) and meshed with the worm (7), and a casing (6) rotatably supporting the worm (7) and the worm wheel (8) meshed with each other. The casing (6) has a worm fitting sleeve (62) for accommodating the worm (7), and the worm fitting sleeve (62) incorporates a leaf spring (9) which pushes the worm (7) in its axial direction with an extreme end of the worm (7) held in contact with the leaf spring (9).

Abstract: A seat, in particular a motor-vehicle seat, having a seat-adjusting mechanism is described. The seat-adjusting mechanism comprises a motor-driven spindle unit with a nut which has an inner profiled portion and a spindle which has an outer profiled portion. The spindle unit comprises a plurality of rollers which are arranged in planetary manner between the nut and the spindle and cooperate with the nut and the spindle. Each of the rollers has at least one outer profiled portion.

Abstract: A seat vertical positioning device for a vehicle seat includes a seat side member supported by the vehicle seat, a bracket fixed to a vehicle floor side member and a link having on end pivotally connected with the bracket at a first pivot point and another end pivotally connected with the seat side member at a second pivot point. The seat vertical positioning device further includes a pin for moving the first pivot point of the link relative to the bracket when the seat side member receives a load which exceeds a predetermined value. A plurality of recesses are formed on the bracket at a position separated from the first pivot point, and a lock pin is fixed to the link and engageable with the recesses when the pivot point of the link is moved.

Abstract: A vehicle seat assembly includes a seat back that is supported with respect to a seat bottom. The seat bottom is supported on a track assembly that includes a seat adjuster for controlling movement of the seat back and bottom. The seat adjuster can move the seat in horizontal and/or vertical directions and can also be used to adjust the tilt of the seat. An electric motor is used to drive the seat adjuster. The motor supports a first connector and the seat adjuster supports a second connector. A flexible shaft is used to interconnect the first and second connectors to transmit power from the motor to the adjuster. The shaft has a first end and a second end with each of the ends defined by a helical body portion. The first connector and the first end are mated to interconnect the motor and the shaft and the second connector and the second end are mated to interconnect the seat adjuster and the shaft.