Abstract: A vehicle seat and a seat headrest are adjustable to accommodate seat occupants of varying heights. The headrest, height and seat position are adjusted together by connecting the headrest drive motor and the seat drive motor to a single control switch. The headrest has a smaller total distance of travel in relation to the travel distance of the vehicle seat. The headrest motor may drive a thread with a smaller pitch. Alternatively, there may be employed pulse width modulation of the electrical power supplied by a common switch or a similar device to create a proportional relationship between the motion of the headrest and the vehicle seat.

Abstract: A system for the displacement of a neck rest in response to the displacement of a vehicle seat in an automobile, wherein the neck rest is mounted to a first structural part which is height-displaceably mounted to a second structural part, the latter being fixedly secured to the rest of the seat, the system having the following features: a rope defining a loop to transfer a force along the loop, one section of the rope being connected to the first structural part, the rope being guided about two spaced idle rollers, one of the rollers being rotatably supported by the seat and the other by the second structural part a first coupling part fixedly connected to the rope a second coupling part fixedly connected to the vehicle a coupling element movably supported on the seat and selectively engageable with the first coupling part actuating means for the coupling element on the seat adapted to coact with the second coupling part in response to the position of the seat such that in a forward position and upon dis

Abstract: Vehicle seat underframe comprising a framework provided with a lower guide shoe and with a moving catch comprising a lateral claw that can move between a locked position and a retracted position. The device for operating the catch is connected to a release cam which normally holds a release finger in the effaced position. When the catch is in the retracted position, the release finger moves into an active position in which a lower end of this finger projects downwards with respect to the framework while an upper end of the release finger immobilizes the release cam.

Abstract: An automotive seat assembly (14) has a seat cushion assembly (13) and a seat back assembly (17). A pair of rear seat supports (28) are pivotally mounted to the rearward end (20) of the seat cushion assembly (13) for supporting a rear portion of the seat assembly (14). A pair of front seat supports (30), which each include a pair of legs (36, 38), are mounted to the forward end (18) of the seat cushion assembly (13) for supporting a front portion of the seat assembly (14). A link (40) interconnects each of the front seat supports (30) to a corresponding rear seat support (28) for moving the rear seat supports (28) between a seating position and a tumbled position. In the seating position, the front (30) and rear seat supports (28) extend downwardly from the seat cushion assembly (13). In the tumbled position, the seat cushion assembly (13) pivots upward about the front seat supports (30) and the rear seat supports (28) fold against the seat cushion assembly (13).

Abstract: A fishing pole support or harness for connecting a user to a fishing pole to support and control the fishing pole.

Abstract: A seat which is mounted between two side frames, each having a horizontal member and vertical leg members, wherein the seat pivots about a transverse torsion bar extending within said seat width; a structural member extending alongside the torsion bar transferring the torsion bar forces to the frames horizontal members, the structural member having travel limiting means thereon to define the pivoting limits of the seat, the torsion bar being rigidly secured at its ends to the seat and rigidly secured at a point within its ends to the structural member.

Abstract: A slide rail structure for a seat for a vehicle comprises a supporting device extending in a longitudinal direction of a vehicle and a moving device supported to the supporting device so as to freely move in the longitudinal direction and to which the seat for the vehicle is mounted. A stopper is provided in front of a rearmost end position of the moving device. An engaging device which does not engage with the stopper when the moving device is moved to a front side and engages with the stopper when the moving device is moved to a rear side is provided in the moving device. A lock canceling device for canceling an engagement state between the engaging device and the stopper interlocking with a tilting operation of a backrest portion of the seat for the vehicle is provided.

Abstract: An office chair includes a frame having a tube with a tapered inner periphery and a plurality of legs extend from the tube. A C-shaped sleeve is movably received in the tube and has a tapered outer periphery. The sleeve has a threaded inner periphery so as to be threadedly engaged with a seat post. Two notches are defined in the tapered outer periphery of the sleeve so that two pins extend through the tube and are engaged with the two notches to restrict the sleeve from being rotated. The sleeve is firmly clamp the seat post when a load is applied downward the seat post. When lifting the seat post, the sleeve is raised and loosened so that the seat post is adjustable.

Abstract: A seat guide for mounting a car seat and to its positional adjustment in a direction of an axis of displacement. The seat guide has two guide rails installed parallel to the axis of displacement and support rollers which cooperate with and move relative to the guide rails to support a vertical load. Lateral guide devices are provided for lateral support in a direction of a lateral axis running essentially perpendicular to both the axis of displacement and the guide rails. The relative motion of the lateral guide devices cooperates with the guide rails overcoming any conditions of elastic rolling friction.

Abstract: A seat includes a pivotable mount and a release member movable between a normal position wherein a locking device is in a locked position and a release position wherein the locking device is in an unlocked position. A bypass link moves the release member to the release position when a seat back pivots to a fully folded position and a movable track is in a predetermined release position so that the movable track moves to a predetermined memory position. When the movable track is in the predetermined memory position, the bypass link moves independently of the release so that the bypass link enters a bypass position, and the release member is in the normal position, when the seat back is in the fully folded position. Thus, the fully folded and locked seat can be flipped to a stowed position.

Abstract: A vehicle seat drive for driving a vehicle seat includes a mechanical inchworm linear motion actuator. A linearly movable shaft is coupled to the vehicle seat such that the vehicle seat moves as the shaft moves. The actuator includes a jamming module and an actuation module. The jamming module has left and right jamming plates operable for engaging and disengaging the shaft while moving linearly with respect to the shaft. The actuation module is operable for applying linear forces on the jamming plates to have the jamming plates engage and disengage the shaft and move linearly with respect to the shaft. The actuation module applies a first linear force in a first linear direction on a jamming plate to have the jamming plate engage and move the shaft in the first linear direction thereby moving the vehicle seat in the first linear direction while causing the other jamming plate to disengage from the shaft.

Abstract: A flexible seating system (10) for a vehicle (20) which includes a side wall track (24) mounted to the vehicle side wall (22) and extending longitudinally of the vehicle. A cross track (30) extends laterally across the vehicle. A seat back (40) of the vehicle seat (18) is coupled to the side wall track and cross track by slidable bearing (58) devices so that the seat back can be moved from a laterally extending forward facing position to a stowed position alongside the vehicle side wall. The seat bottom (42) is rotatably coupled to the seat back by a hinge (44) mechanism and can extend generally horizontally from the seat back to be rotated to an upright stowed position overlying the seat back. A support extends from the seat bottom to the vehicle floor (57) to support the seat bottom in a spaced relationship above the floor.

Abstract: Storable/slidable vehicular seat apparatus includes a seat with a seat base that can be flipped upwardly via a pivot to be stored against a wall of a vehicle compartment. The seat base is slidable in a front-and-rear direction of a vehicle bodywork. The seat base is pivotally attached at its one side to the vehicle bodywork. Leg member is secured to the underside of the seat base via a second slider and second sliding rail. When the seat base is flipped upwardly via the pivot, the leg member, second slider and second sliding rail are moved upwardly and stored together with the seat base.

Abstract: An electric adjusting device for a front seat of a motor vehicle, with which the front seat can be displaced at least in the longitudinal direction by means of an electric motor is provided. In the present invention, a forwards displacement of the front seat is requested by folding the seat back forwards (entry assistance). According to the invention, a changeover switch which is coupled to the release lever is provided. The changeover switch having to be actuated at the same time as the seat back is folded forwards, if it is intended for the seat to be displaced by means of an electric motor in order to facilitate entry.

Abstract: A seat assembly for a vehicle having a seat cushion and an seat back pivotally connected to the seat cushion for movement between a plurality of reclined seating positions and a forwardly dumped position. A track assembly has a pair of upper tracks mounted to the seat cushion and a pair of lower tracks mounted to the floor of the vehicle. The upper tracks are slidably coupled to the lower tracks for providing sliding movement of the seat assembly between a full forward position and a full rearward position. A locking mechanism is operatively coupled to the upper and lower tracks for movement between a locked position interlocking the tracks and an unlocked position allow sliding movement therebetween.

Abstract: A seat supporting table for a barber of beauty chair which can slide a barber or beauty chair even when the barber or beauty chair is provided with no sliding function. A sliding plate, to which the barber or beauty chair is attached, is slid forward and backward to a desired position along a guide rail for guiding a slide of the sliding plate. A sliding power controlling bolt for controlling a sliding power required for sliding the sliding plate is also provided and a slider controls the sliding of the sliding plate.

Abstract: A fishing pole support apparatus for connecting a user to a fishing pole to support and control the fishing pole.

Abstract: The present invention relates to a runner for a vehicle seat, the runner comprising a male bar and a female bar that are mounted to move relative to each other over a predetermined stroke (L), the runner further comprising a detector (18) disposed on one of the male and female bars, and a detectable member (94) disposed on the other of the male and female bars. The male bar (9) is a generally channel section bar including a horizontal web (91), the female bar (8) is a generally channel section bar including a horizontal web (81), and the detectable member is formed by a tab (94) that is integral with or secured to the edge (93b) of one of the lips (93) of the male bar, the corresponding side wall (8a) of the second bar (8) having an opening (86) disposed in correspondence with the detector (18) adapted to detect the presence or the absence of the tab (94) of the male bar (9).

Abstract: A vehicle seat assembly is provided with a seat frame supporting a seat cushion, a pair of lateral slide units longitudinally spaced to each other and coupled to the seat frame for lateral sliding movement of the seat cushion, and a pair of longitudinal slide units laterally spaced to each other and adapted to be fixedly secured to a floor panel of a vehicle body for longitudinal sliding movement of the seat cushion. The lateral slide units is coupled to the longitudinal slide units. Also, the lateral slide units include front and rear stationary rails, which are longitudinally spaced to each other and supported with the longitudinal slide units, and front and rear movable rails, which are longitudinally spaced to each other and held in engagement with the stationary rails for the lateral sliding movement of the seat cushion, respectively, and the front and rear movable rails of the lateral slide units form a part of the seat frame.

Abstract: A latch assembly adapted for use in a vehicle having a movable member, a fixed member, and a striker fixed to one of the movable and fixed members. The latch assembly is adapted to be connectable to the other of the movable and fixed members and to selectively couple the movable member to the striker. More particularly, the latch assembly of the present invention includes a housing, a latch and a release cam coupled to the housing, spring means, and a release mechanism. The housing includes a striker opening adapted to accommodate the striker. The latch is operable in a latched position when the latch assembly is in a latched mode wherein the latch is adapted to couple the striker to the housing and in an unlatched position when the latch assembly is in an unlatched mode wherein the striker is freely movable relative to the housing.

Abstract: A seat assembly for an automotive vehicle comprising a main support frame adapted to secure the seat assembly to the floor of the vehicle. A seat cushion is rotatably journaled to the main support frame for rotation between a seating position and a fold flat position rotated generally 180 degrees about the frame. A seat back is pivotally coupled to the main support frame for rotation between a generally upright seating position to a fold flat position aligned generally flush with the seat cushion in the fold flat position. A lower track is fixedly secured to the main support frame and an upper track is fixedly secured to the seat back and slidably secured to the lower track. An automatic fold mechanism is operatively coupled between the upper track and the seat cushion for automatically rotating the seat cushion between the seating position and the fold flat position in response to fore and aft sliding movement of the upper track along the lower track.

Abstract: A seat slide (E1) includes a first guide (1). The seat slide includes a second guide (2) configured to be guided by the first guide (1). The second guide (2) supports a seat (101). The seat slide includes a leading member (3) configured to move the second guide (2) relative to the first guide (1). The seat slide includes a cap (4) mounted to the second guide (2). The cap includes a first support (41) for supporting the leading member (3). The cap includes a second support (42) extending from the first support (42) for supporting the second guide (2).

Abstract: A seat displacement mechanism for a seat, such as a vehicle seat, which includes a seat back that is attached to a seat bottom such that it may be folded about a horizontal axis and locked in the a position. The seat bottom is connected, for height adjustment, by means of front and rear linkages mounted in pairs, at least one pair of which is attached, proximate one end of the linkage to an upper rail. A portion of the upper rail is provided with a longitudinal guide area to which the lower end of a linkage may be mounted so that the linkage may move longitudinally or slide relative to a seat base. A linkage may be locked in its rearward position with respect to the upper rail, preventing seat movement.

Abstract: A shock absorbing boat seat assembly for providing a more comfortable ride upon a boat moving upon water. The shock absorbing boat seat assembly includes one or more seat members each having a seat and a backrest connected to the seat; and also includes one or more base assemblies for supporting one or more seat members with each of one or more base assemblies having a base member being adapted to securely mount upon a deck of a boat, and also having a boss-like support member securely disposed upon the base member and having a opening therein, and further having a hollow tubular member being movably disposed in the opening of the boss-like support member, and also having a shock absorbing assembly for absorbing shock, and further having a seat support member securely mounted upon the tubular member.

Abstract: A seating system, for example a paediatric seating system for wheelchairs, provides appropriate support for a person using the chair by providing adjustable components to support specific anatomical areas of the back, pelvis and upper leg and, more specifically, three components that stabilize the pelvis of that person. These components comprise an elevation change in the seat, a pad at the back that provides resistance to the posterior superior iliac spine (PSIS) and a pair of anterior pelvic pads that stabilize below the anterior superior iliac spine (ASIS).

Abstract: A foldable vehicle seat is constructed such that when the seat is placed in a passenger area and that a seat cushion is tipped up from a seating position, a forward-inclination stopper stops once the seat cushion at an upright position by abutting on a lock plate. When the seat is moved from the passenger area to a luggage area, the forward-inclination stopper allows inclination of the seat cushion to the most forward inclined position in accordance with a position of the lock plate.

Abstract: An adjustment mechanism comprising a pivoting transmission member which surrounds an inlet member having three outwardly-directed projections. Between the inlet member and the bearing surface there are placed three springs urging wedging bodies towards the projections of the inlet member, and three fixed fingers. One of the fingers is of width sufficient to come into contact with the corresponding wedging bodies to prevent these bodies from wedging against the corresponding projections when the inlet member is in its rest position, while the other two fingers are of width that is small enough for the corresponding wedging bodies to then be wedge against the corresponding projections.

Abstract: Storable/slidable vehicular seat apparatus includes a seat with a seat base that can be flipped upwardly via a pivot to be stored against a wall of a vehicle compartment. The seat base is slidable in a front-and-rear direction of a vehicle bodywork. The seat base is pivotally attached at its one side to the vehicle bodywork. Leg member is secured to the underside of the seat base via a second slider and second sliding rail. When the seat base is flipped upwardly via the pivot, the leg member, second slider and second sliding rail are moved upwardly and stored together with the seat base.

Abstract: A vehicle seat assembly includes a seat bottom and a seat back supported for movement relative to the seat bottom such that seat position can be adjusted forwardly or rearwardly with respect to the vehicle. The seat assembly is mounted to a vehicle structure and includes a first track and a second track supported for movement relative to the first track with the seat bottom being supported on the second track for movement with the second track. A support member presents a bearing surface that rotatably engages a bearing surface on the second track. At least one adjustment link is used to interconnect the support member and the seat bottom. The adjustment link is mounted on the support member for rotation therewith to provide vertical seat adjustment. A torque tube engages the support member to provide rotational input to the adjustment link.

Abstract: A vehicle seat the feet of which are assembled in a removable manner on two fixed sections by means of vertical jaws which ensure the coupling of the seat onto the fixed sections.

Abstract: A seat support for use with a vehicle seat and adapted to engage a floor-mounted track, the track having two inwardly directed lips on opposed sides of a slot. The seat support has a framework to support the seat, and which is provided with a clamping mechanism to engage the lips of the track. The clamping mechanism has two spaced apart plates, with the spaced apart plates having inwardly inclined lower regions. The lower edge of each plate carries an outwardly directed flange. A mechanism is provided to move the lower regions outwardly against an inherent resistance bias provided by the plates from an initial position in which the flanges may be inserted between the lips of the track to an outer clamping position in which the flanges engage the lips of the track. A knife element is mounted between the plates and is adapted to be moved between an upper position and a lower clamping position.

Abstract: A seat track assembly for an adjustable seat with positive engagement is disclosed and has a lower track assembly with at least one lower track having a plurality of spaced slots and an upper track assembly with at least one lower track. The upper track is slidable over the lower track. A latch is movable from a latching position securing the upper track with respect to the lower track to an unlatching position where the upper track is free to slide over the lower track. The latch comprises a plurality of locking pawls mounted on the upper track, with each locking pawl having a first tooth and a second tooth and each tooth has a front face and a rear face. In the latching position the first tooth of a first one of the locking pawls is received within a first slot and the second tooth of the first one of the locking pawls is received within a second slot.

Abstract: A vehicle seat interlock mechanism includes a U-shaped channel member extending along a lower track of a seat and an interlock bracket mounted to a deformable mounting member at an upper track of the seat. The interlock bracket includes a seat belt anchor and a U-shaped channel at a lower end of the bracket. The interlock bracket is movable upwardly and forwardly in response to a seat belt force sufficient to deform the mounting member of the interlock bracket, whereby the two interlock channels engage to limit movement of the seat relative to the floor of the vehicle. The interlock bracket may include a portion extending forwardly over a gear box of a power drive system for the seat, such that the bracket is movable to compress the gear box to further retain the gear mechanism to a rack along the track assembly of the seat.

Abstract: A vehicle seat allowing an occupant to either face in a first direction or a second opposed direction is provided. The seat comprises a base that allows for the back rest of the seat to be moved, alternatively, forward or back on a cushion such that the user may select whether he will ride facing towards the direction of the automobile's movement or facing away from the direction of movement. The seat further comprises a pop-up seat cushion which allows the occupant to open up the seat cushion to sit more securely within the seat cushion while having side cushions for added support and impact resistance. The present invention provides better security for small children and pregnant, elderly or otherwise more fragile adults. The seat allows children to be placed such that they do not face the direction of oncoming traffic and instead ride in the more generally agreed to be secure direction of travel.

Abstract: A seat slide device for vehicles includes a first and second rows of locking teeth which are formed along the longitudinal direction of the rail on a lower rail, a first flange portion which is formed on the locking lever opposed to the first row of locking teeth and is provided with a plurality of locking holes, and a second flange portion which is formed on the locking lever opposed to the second row of locking teeth.

Abstract: A seat device for a vehicle includes a seat slide device supporting a vehicle seat relative to the vehicle floor at a position that is slidably adjustable in a back and forth direction on the vehicle floor, a lock plate engageable with the seat slide device to hold the seat at a position on the vehicle floor, a release lever rotatably supported on the seat slide device for releasing engagement of the lock plate with the seat slide device to permit sliding movement of the vehicle seat, and a walk-in mechanism having a hold lever for engaging the release lever to control rotation of the release lever when the release lever engages the lock plate. The rotation of the hold lever pivotally supported on the seat slide device is controlled by the engagement between the lock plate and the seat slide device so that when the lock plate is out of engagement with the seat slide device and the vehicle seat moves forwardly, rotation of the hold lever is permitted.

Abstract: Arrangement for securing a long slide rail device with support legs in a vehicle floor, the long slide rail device including a long lower rail, wherein, among the support legs, a leg member is provided at a vulnerable point of the long lower rail which is defined between a seat storage area and a seat home position area in a vehicle or automobile, so that a part of great force applied from a vehicle seat will be escaped through the leg member to the vehicle floor, thereby preventing undesired bending or deformation of the long lower rail at that vulnerable point.

Abstract: A rotary recliner control mechanism for use in a vehicle seat assembly, which vehicle seat assembly has a seat back member (44). A cam pin (94) is mounted on the link means (76) for driving engagement with the camming shoulder (112), upon forward pivotal movement of the seat back member (44) to cause the rotation of the interlock plate member (100) against the second biasing means (106), when the link member (76) is in the first link position. The cam pin (94) is also mounted on the linkmeans (76) for clearing motion of the camming shoulder (112) when the link member (76) is in the second link position. A connection means (124) is interconnected between the interlock plate (100) member and the track lock releasing means (36) for unlocking the track lock means when the interlock plate member (100) is rotated, under the driving contact of the cam pin (94).

Abstract: Adjustable support apparatus comprising a support structure including a first seating element and a pivotally attached second seating element each for receiving a selected portion of a body of a user thereon, a rack and pinion adjustment assembly fixed to the support structure for reciprocally adjusting the support structure and a belt and drum adjustment assembly fixed to the support structure for pivotally adjusting the second seating element.

Abstract: An x-ray chair, for providing support and comfort to a patient seated therein during an x-ray procedure, comprising a patient carrier and a lower mobility assembly. The patient is seated within the patient carrier, and the lower mobility assembly allows the patient carrier to rotate (via a lazy susan arrangement), tilt forwards and backwards, and tilt sideways. Various adaptations are provided on the patient carrier to maximize the comfort and support for the patient, including removable support pillows, a removably pummel, retractable leg supports, and multipositional arm rests.

Abstract: In an arrangement for a seat (2) in a vehicle, the seat is movable in a longitudinal direction along a plane (33) which slopes relative to the horizontal plane. The subframe of the seat (2) consists of devices (30, 31) fastened respectively to the vehicle and to the seat, which devices consist of two substantially similar triangular supporting frames. Resetting between a predetermined driving position and a likewise predetermined resting position is made possible by a control device (16) which is fastened to the device (30) which is itself fastened to the vehicle, which control device cooperates with a locking device fastened to the seat so that during a relocating movement between forward and rear positions of the seat the locking device (17) becomes free from at least one locking position between the vehicle seat and the device (30) fastened to the vehicle.

Abstract: A computer work station including a user seat and a monitor supporting tray positioned in front of the seat, comprising a first chassis unit having a first base, an elongated seat supporting member, a first varying mechanism for varying the location of the seat along the seat supporting member between a relatively reclining position and a relatively upright position, a second chassis unit having a second base, an elongated monitor supporting member, a second varying mechanism for varying the location of the monitor supporting tray between an uppermost position and a lowermost position, and a coupling mechanism for coupling the seat to the monitor supporting tray so that displacement of the seat toward a relatively reclining position results in the displacement of the monitor supporting tray toward the uppermost position and displacement of the seat toward a relatively upright position results in the displacement of the monitor supporting tray toward the lowermost position.

Abstract: An adjustable seat including a seat frame and a rack mounted to a substrate. First and second pinions are rotatably carried by the frame and meshingly engage the rack for relative movement of the rack. The second pinion is movable between an open position allowing rotation of the pinions, and an engaged position wherein the pinions are mutually engaged with each other and the rack, preventing relative movement of the rack and rotation of the pinions. A cam engages the second pinion for moving it between the open position and the engaged position.

Abstract: A lead screw which is to be moved in a direction. A nut is screwed to the lead screw. A first bracket is to be swung by moving the lead screw so as to move a seat up and down. The first bracket has a first opening. The nut is fitted in the first opening. A second bracket is to move the seat up and down with the first bracket. The second bracket has a second opening of a size larger than that of the first opening. The second opening is to pass the nut in an inclined position therethrough. The second opening is to position the nut therein.

Abstract: A first rail is fixed on a side of a seat and is moved relative to a second rail fixed on a side of a vehicle body. A driving mechanism is to move the first rail relative to the second rail and has a lead screw. The lead screw is supported on the side of the first rail and has an end surface. A bracket is fixed to the first rail and is arranged to be opposed to an end surface of the lead screw.

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.

Abstract: A seat sliding apparatus includes: a pair of right and left lower rails (20, 20) each having lock teeth (22, 22); a first and a second upper rails (30A, 30B); first and second lock plates (40A, 40B); lock springs (50, 50) provided at the first and second upper rails (30A, 30B) respectively; and an operation lever (70) attached to the first and second lock plates (40A, 40B). In the above construction, a first end portion (70a) of the operation lever (70) is attached to the neighborhood of the pivot portion (41) of the first lock plate (40A). Furthermore, an operation lever attachment member (45) for attaching a second end portion (70b) of the operation lever (70) to the neighborhood of the pivot portion (41) of the second lockplate (40B) is provided to be rotatable and freely up and down.

Abstract: A device for adjusting a longitudinal position of a subassembly, in particular a seat of an automobile, is positionable on a horizontal floor of a passenger compartment of a vehicle which includes a movable expandable mechanism to lock and unlock the device in different positions.

Abstract: A seat sliding apparatus has left and right rail pairs each including an upper rail for supporting a seat and a lower rail for fixing to a vehicle body. In each of the left and right rail pairs, left and right resin sliders are attached to lateral edges of the upper or lower rails, to facilitate sliding motion of the upper rail along the lower rail. Each resin slider has a larger engaging portion and a smaller engaging portion. The left and right resin sliders are arranged in parallel to each other, but extended in opposite direction, so that the larger engaging portion is ahead of the smaller engaging portion in one of the left and right resin slider whereas, in the other resin slider, smaller engaging portion is ahead of the larger engaging portion.

Abstract: In a seat sliding device, an upper rail slidably moveable relative a lower rail interlocks with the lower rail upon movement of the upper rail away from the lower rail. An upwardly inclined portion and a downwardly inclined portion can be provided on the upper rail and the lower rails, respectively. A spacer element is provided between the upwardly inclined portion of the upper rail and a corner of the lower rail. The inclined portions and the spacer elements interlock upon movement of the upper rail away from the lower rail. Due to sufficient area being provided between the interlocking portions, separation of the upper rail from the lower rail can be prevented.