Abstract: A seat slider mechanism consists of a U-shaped lower rail provided, on outer left and right sides, with a longitudinally oriented, downward facing first hook portion. An upper rail engages with the lower rail via a second, upward facing hook portion provided longitudinally on both left and right inner surfaces. A seat is mounted on the upper rail and a motor, or other source of driving force may be provided for moving the upper rail relative to the lower rail. The lower rail is secured by mounting brackets which are attached to end blocks by both rivets and welding.

Abstract: A power operated seat device comprises: a pair of lower rails for fixing to a floor of a vehicle, a pair of upper rails for mounting a seat cushion of the vehicle mounted slidably on the lower rails respectively, each of the upper rails having an upstanding flange portion with a notch, a pair of brackets each of which is mounted detachably to the side of the corresponding flange portion so as to cover the notch, a rotational rod rotatably supported at both ends thereof to the corresponding bracket, a power source for rotating the rotational rod, and an adjusting the height mechanism provided between one of the upper rails and the seat cushion, and which is connected to the rotational rod and adjusts the height of a portion of the seat cushion by rotating of the rod.

Abstract: A seat slide device includes a stationary rail and a movable rail. The stationary rail has a first bottom wall portion, first inside wall portions vertically upwardly extending from side ends of the first bottom wall portion, upper wall portions outwardly extending from upper ends of the first inside wall portions, and first outside wall portions vertically downwardly extending from outer ends of the upper wall portions. Each of the upper wall portions is grooved at a major portion thereof for receiving ball bearings thereon and convexly curved at a rear end portion thereof. The major portion and the rear end portion are united.

Abstract: Movable and stationary rails are of complementary cross sections, the movable rail being generally C-shaped with grooved side wall portions, the stationary rail having an elongate flat upper plate whose side edge portions constitute guide edge portions. The side edge portions of the stationary rail are spacedly received in the grooved side wall portions of the movable rail. Metal rollers are disposed between major flat portions of the movable and stationary rails. A plastic slider is secured to each of the guide edge portions and so shaped as to be neatly and slidably received in the corresponding grooved side wall portion of the movable rail. The plastic slider has an opening through which an outside edge wall of the guide edge portion is exposed. A metal ball is rotatably received in the opening in such a manner that diametrically opposed ends thereof are contactable with the outside edge wall and an inner surface of the corresponding grooved side wall.

Abstract: In a vehicle seat provided with a seat cushion height adjusting device, at least one seat lift handle (10A or 10B) and a seat lifting device (20) are assembled into a unit and removably mounted between a pair of seat base plates (40A and 40B), so that the additional seat cushion height adjusting device can be readily mounted under ordinary vehicle seats provided with no such adjusting device, thus standardizing the seat base plates to reduce the stock cost thereof.

Abstract: A power seat track apparatus for selectively positioning an automotive vehicle seat is adapted to be powered by an electric motor drive, preferably with separate motors for each drive direction. The seat back is mounted on the upper track of the seat track mechanism for horizontal drive with the track. The vertical drive through front and rear torsion tubes or bars act on only the seat pan and seat cushion but not on the seat back. Since the vehicle shock loading requirements must be met by the structural seat pan or seat frame, the pan for holding only the seat cushion may be reduced in size as compared to the usual power seat frame. The front of the seat cushion is interconnected with the pan through a lost motion pivot and the rear portion of the seat cushion is interconnected with the seat pan through a fixed pivot connection whereby simultaneous elevation and shortening of the seat cushion with respect to the seat back is effected.

Abstract: Disclosed herein is a power seat slide device which comprises a stationary rail member; a movable rail member axially slidably engaged with the stationary rail member, the movable rail member having an anchor portion to which an end of a seat belt is connected; a rack member extending along and secured to the stationary rail member having an axially extending slit defined therebetween; a pinion meshed with the rack member; a drive device mounted on the movable rail member to drive the pinion; and an embracing structure connected to the movable rail member and embracing the rack member in a manner to constitute a slidably interlocking connection therebetween, the embracing structure having opposed end portions by which the pinion is rotatably held, one of the opposed portions being passed through the axially extending slit.

Abstract: A vehicle seat support assembly for supporting a seat for vertical adjustable movement. The seat support assembly includes lower mounting rails which are fixed to the vehicle and an upper seat supporting frame to support a vehicle seat. Pivot links connected between the mounting rails and the upper seat supporting frame support the seat supporting frame for vertical movement with respect to the mounting rails. A locking rail locks the vertical position of the upper seat supporting frame with respect to the lower mounting rails. The locking rail includes a fixed second portion and a first portion fixed to the upper seat supporting frame which is movable forwardly and rearwardly with respect to the second portion of the locking rail.

Abstract: A preferred embodiment seat adjuster according to the present invention has a first link which is pivotally connected typically along its rearward end to the vehicle floor. A powered gear is connected to the first link and is meshed with a sector gear which is connected to the forward end of the vehicle seat adjuster. The sector gear is also connected to the vehicle floor. Slidably mounted to the first link is a second link having a sector gear connected to its rearward end. The vehicle seat (or frame) is pivotally connected along its forward end to the second link and the vehicle seat has a powered gear which in meshed with the rearward sector gear of the second link. Longitudinal movement of the seat is provided by a worm gear rotatably connected to the second link and meshed with a rack connected with the first link. Elevation of forward end of the vehicle is accomplished by the powered gear rotatably connected with the first link and meshed with the sector gear connected with the vehicle floor.

Abstract: A compressible carrier wherein the carrier may be compressed or expanded in all three possible axial directions. The present invention provides a cart whose interior volume may be adjusted in three dimensions to accommodate variously shaped and sized items. The carrier may be altered axially both manually and by motors, both of which are described.

Abstract: A calibration stand for multiforce component sensors is capable of providing six components of force and moment to such sensors, using support and loading apparatus on the calibration stand. The stand is a compact, portable unit that provides for holding the sensor in a precise position by fully permitting pitch and lateral adjustments of the support assembly, as well as vertical and lateral adjustments for axial and "roll" or moment loading. The adjustability permits accurate applications of normal, lateral, and axial loads on the sensor being calibrated. Load cells are used to measure the application of the loads, and by proper instrumentation the output from the load cells can be used for recording data or providing digital displays. A coupling for carrying loads to the sensor permit determining whether shear loads are being introduced into the sensor and the adjustments permit zeroing out such shear loads so the loads are directed along the desired axes only.

Abstract: A fore-and-aft suspension device for an automotive seat, in which the seat lower base frame of said seat is movable forwardly and backwardly along a guide rail, and a shaft extends between the seat lower base frame and guide rail, with a pair of coil springs being wound around the shaft. A spring abutment member is also provided between the seat lower base frame and guide rail, such that those coil springs are at their respective ends abutted against both sides of the spring abutment member. Thus, a forward and backward load or jolting applied to the seat is smoothly transmitted, via such seat lower base frame, to the the coil springs, which are then compressed at the spring abutment member, absorbing the forward and backward load or jolting.

Abstract: A powered seat adjuster incorporating features including:(i) a double "J" moveable track contained within a generally U-shaped track which provides superior reinforcing and movement abilities;(ii) a novel joint to fasten the torque tube to the track;(iii) a novel joint for fastening the torque tube to the bell crank;(iv) an improved anti-chuck feature;(v) a novel nut assembly for resolving loads on the horizontal lead screws of the seat track, yet providing smooth quiet operation during normal use;(vi) an improved motor module assembly standardized in construction incorporating unique mounting features.

Abstract: An operation mechanism of a lifter for an automotive seat, including a drive mechanism, a drive shaft operatively connected with the drive mechanism, a gear fixed on the drive shaft, a pair of first and second latch pawls engageable with the gear, and a switch-over cam for selectively disengaging one of the two latch pawls from the gear, with the other of them remaining in engagement with the gear, which forms a ratchet structure. Such actuation of the switch-over cam is effected by drawing out or retracting the handle of lever provided with the mechanism. Thus, the rotational direction of the gear is set by drawing out or retracting the handle, which causes raising or lowering of the seat through the drive mechanism.

Abstract: A locking slide apparatus (10) for mounting a seat in a vehicle, the locking slide apparatus including an elongated stationary rail (12) securable to a vehicle floor (11) and having a longitudinally aligned row of lock holes (18) extending vertically therethrough to form a linear rack, an elongated slide mechanism (13) adapted to support a seat thereon and supported by and longitudinally slidable along the stationary rail, and a lock mechanism (15) slidably attached to the slide mechanism and having lock pawls (19) upwardly insertable into and resiliently held in respective lock holes in the stationary rail to prevent the slide mechanism from sliding therealong.

Abstract: A power seat apparatus includes a seat driving mechanism for supporting a seat member. Upon adjustment of the position of the seat member, the rotational torque is transmitted to the seat driving mechanism via a cable which passes through a protection tube. For decreasing the friction between the cable and the protection tube, the cable is covered with another tube made of heat-shrinkable synthetic resin or is coated with synthetic resin.

Abstract: A seat for vehicle is provided comprising a seat back, a seat bottom, a pair of side brackets mounted on both sides of the bottom of said seat bottom, respectively, and a pair of seat supporting brackets, spaced from each other, mounted on the floor of the vehicle. The seat also includes two pairs of arms, each mounted at one end thereof on said side bracket and at the other end thereof on the lower end of said seat back, adapted to shift said seat back forwards and backwards. Between the side brackets and the seat supporting brackets, two pairs of legs are pivotably arranged, which are adapted to maintain a constant angle between the seat bottom and the floor of the vehicle, thus the seat bottom can be moved a certain distance by the pivoting of the legs. The seat for a vehicle also comprises a locking mechanism adapted to actuate and constrain the pivoting of the legs.

Abstract: An X, Y, Z (and .theta.) article positioner and method are disclosed in which two axial elements, one inclined at an angle .alpha. and the other inclined at an angle -.alpha., are utilized in conjunction with each other to accomplish moves in a pure X or pure Z direction or a combination thereof. Each axial element is driven by a lead screw, which in turn is driven by a motor. Pure X movement is achieved by driving the lead screws the same amount, at the same rate, in the same direction. Conversely, to achieve a pure Z movement, the two lead screws are driven the same amount, at the same rate, but in opposite directions. In the preferred embodiment, three superposed and independently driven wedges are used to provide the desired single axis or combinational axis movement to position a workpiece in X, Y and Z with rotational movement of the three wedges providing .theta. axis positioning.

Abstract: In a tilt-adjustable seat cushion for a vehicle seat having an underframe receiving the upholstered seat part, two lateral frame parts for the pivotable bearing of the underframe and a tilt-adjusting mechanism operating between the underframe and the frame parts for the individual adjusting of the front edge of the seat, the manually operated adjusting shaft of the tilt-adjusting mechanism, in order to facilitate the assembly, is disposed in a separate bearing block that, after pre-assembly with the frame parts and the adjusting shaft, is connected with the underframe by screws or clips.

Abstract: An arrangement for carrying horizontally and vertically adjustable data processing devices has two legs connected at the upper end with a horizontally arranged carrier for carrying and guiding a member which carries a data processing device by means of a column, wherein the legs have a fixed height and the member which carries a data processing device has a receptacle for the column which is vertically adjustable.

Abstract: A lock plate having a plurality of latch holes is connected to a stationary lower rail to extend along the same, and a latch member having latch pawls is fixed to a control rod which is rotatably held by a movable upper rail. One of the latch pawls is longer than the other, so that when the upper rail is slid to a front or rear over-travel position relative to the lower rail, the longer latch pawl is placed outside of an extreme end of the lock plate having the other shorter latch pawl placed on a land portion of the lock plate. Upon application of shock to the upper rail due to for example rapid start or rapid braking of the vehicle, the longer pawl is brought into contact with the extreme end of the lock plate faclitating latched engagement between the shorter pawl and an adjacent latch hole of the lock plate.

Abstract: A device for moving an automobile seat back and forth is provided. The device comprises a seat bracket attached to a main seat having an auxiliary seat, a fixed bracket secured to the bottom of the automobile, and trapezoidal legs hinged to the brackets by means of bolts located at the longer sides of said legs. Each leg is adapted to move back and forth along an arc-shaped path at the axis of each bolt as the seat moves back and forth. Each leg also has contacting sides adapted to selectively contact the brackets, depending on the movement of legs, and a pin. The device also comprises a linkage adapted to receive the pins of the legs so that movement of the seat can be constrained at the moved position thereof.

Abstract: A seat slide device for use in an automotive seat which is mounted on the right and left sides of a seat frame to adjust the position of the automotive seat forwardly and backwardly. The seat slide device comprises a first slide rail and a second slide rail to which an anchor of a seat belt is to be attached. A second upper rail included in the second slide rail has in its lower portion a first slide portion identical with that of a first upper rail in the first slide rail as well as a second slide portion fixed on the opposite side of the first slide portion. That is, the second slide rail is constructed such that its upper rail is engageable with its lower rail at the two positions thereof, with the result that the second upper rail of the second slide rail is able to share a removing load by the seat belt anchor at the first and second slide portions.

Abstract: Herein disclosed is a seat sliding device which generally comprises a latch mechanism for latching a movable rail to a stationary and a walk-in mechanism for moving the seat forward when a seatback of the seat is inclined forward. The walk-in mechanism comprises a transmission member which cancels the latched engagement between the movable and stationary rails when turned in a given direction about an operation shaft of the latch mechanism, a memory lever pivotally supported by the transmission member and actable as a prop for keeping the transmission member in the latched engagment cancelling condition and a stepped elongate member fixed to the stationary rail and engageable with the memory lever in a manner to cancel the function of the prop when the seat is slided to a given position with the seatback inclined forward.

Abstract: The seat apparatus for vehicles according to the invention includes at least a seat cushion.And the seat cushion has a frame member made of plastics and a cushion foam member mounted thereon. The frame member has a hollow portion therein so as to increase a mechanical strength thereof. Further, at least the front side thereof is supported by a supporting member mounted on a bracket. Therefore, the frame member is reinforced by the supporting member.

Abstract: A seat longitudinal adjusting mechanism for a motor vehicle seat with a guide rail unit consisting of two rails enclosing therebetween a hollow space and longitudinally displaceably supported at one another. A toothed rack connected with one rail extends within the hollow space, into which engages a pinion supported in a pinion cassette. The pinion is driven by an adjusting gear. For facilitating the assembly, a preassembly rail extending in the rail longitudinal direction is provided which includes fastening means for fastening the pinion cassette at the preassembly rail, independently of the rails, whereby the length of the preassembly rail is essentially equal to the distance of the pinion cassette from one end of the other rail. The preassembly rail preassembled together with the pinion cassette can then be inserted correspondingly into the other rail.

Abstract: A mount for a surveillance camera or the like for moving the camera between an operating position and a servicing position for changing film or lens or the like. The camera and mount have interengaging support means and a fastener for joining the support means together for supporting the camera. A shaft is positioned in a mounting bracket, with the shaft having threaded sections projecting upwardly and downwardly from the mounting bracket. The support means is fastened to the upper end of the shaft with a detent member carried on the shaft for engaging a detent member in the bracket, with the shaft detent member being adjustable with respect to the camera position. The shaft is clamped to the bracket by a nut or the like on the downwardly extending section. With the detents engaged, the camera is initially adjusted to the desired operating position and then the support means is clamped at the upper end of the shaft.

Abstract: A seat cushion for a vehicle seat includes a moving device one end thereof being connected to the vehicle floor and the other end connected to the seat cushion for moving the cushion forwardly and rearwardly relative to a seat back and an operating lever for actuating the moving device and a two-way clutch for transmitting output from the operating lever to the moving device.

Abstract: A seat suspension for resiliently attaching a seat assembly to a support frame on a vehicle so as to cushion the ride for the seat occupant comprises: main biasing springs operatively connected between the seat assembly and support frame to initially absorb energy and limit descent as the seat assembly is forced downward; auxiliary biasing springs, including a "hard" spring and a "soft" spring, to subsequently absorb energy and further limit descent after the main springs have been compressed a predetermined amount; and a shock absorber connected between the seat assembly and support frame to dampen vertical motion. A preloading apparatus is provided for adjusting or preloading the main biasing springs to take into account the weight of the seat occupant. A height adjusting apparatus is provided to adjust the height of the seat assembly and associated biasing springs relative to the support frame.

Abstract: A heavy-object loading jig has a slide plate provided on the upper end portion of a lifting drive means and a mounting plate for mounting a heavy object thereon. Between the slide plate and the mounting plate is disposed a rolling member which allows the mounting plate to move in any horizontal direction within a limited range. The lifting drive may include: a circular cylinder vertically extending with the upper end thereof opened; a cylindrical member which is integrally secured to the inner lower end portion of the cylinder and defines an annular cylinder chamber between the same and the inner surface of the cylinder; a ring-shaped piston slidably received in the cylinder chamber; and a cylindrical rod which is formed integral with the piston and is projected beyond the upper end of the cylinder and further has the slide plate secured to the upper end portion thereof.

Abstract: An installation 10 for the longitudinal adjustment of a seat, especially of a motor vehicle seat which includes a top rail 30 supporting the seat, which is form-lockingly longitudinally displaceably guided on a coordinated bottom rail 44. A drive mechanism 12 with drive pinion 24 is connected with one of the two rails; the drive pinion 24 engages into a toothed rack 56 mounted at the other rail 44 and extending along the same. In order to establish with a simple structure an always reliable mutual engagement of the pinion and toothed rack, also in case of high loads caused by accidents, the other rail 44 is provided with a guide groove 98 for at least one guide bolt 92 mounted at the drive mechanism 14 or at the rail 30 within the area of the pinion 24.

Abstract: The present invention relates to an adjusting device for vehicle seats having a threaded spindle (4) and a spindle nut arranged thereon, each of which is connected in an axially immovable manner with one or the other of elements (1, 2) to be adjusted relative to each other. The spindle nut (13) is provided with a full-length (or continuous) channel (20) running parallel to the threaded bore which receives the threaded spindle (4), which channel receives a bar (22) which prevents a rotation of the spindle nut (13) about the longitudinal axis of its threaded bore. The opposing boundary surfaces (21) of the channel (20), which cooperate with the bar (22) are spaced from each other such that at the midpoint of the channel (20) the space is equal to the bar thickness and uniformly increases toward the two ends of the channel.

Abstract: A seat slide structure which includes upper and lower tracks, each formed of a pair of complementary opposite hand track members. The track members of the upper track interfit with the track members of the lower track and are normally interengaged therewith through a plastic spacer between the tracks. Occupancy of a seat supported by the slide structure compresses the spacer to release the upper track for movement relative to the lower track. The upper track is driven relative to the lower track by means of a gear housed between the members thereof and engageable with gear teeth of the spacer. Screwjack mechanisms are housed between the members of the upper track to support a seat thereon for vertical adjustment. The upper track members also support a gear mechanism to adjust the inclination of a seat back supported on the upper track.

Abstract: This invention relates to a suspended seat assembly (10) which eliminates the problems of excessive elevational movement and limited field of use, harsh ride, inability to accommodate a broad range of occupant weights, bulkiness, wear and premature failure, and difficult adjustment. The suspended seat assembly has a seat frame (12), a support frame (14), a connecting apparatus (42) which pivotally connects the seat frame (12) to the support frame (14) and permits movement of the seat frame (12) between a first position (38) above the support frame (14), past the support frame (14), to a second position (40) below the support frame (14), a tie apparatus (66) which maintains the seat frame (12) at a preselected attitude relative to the support frame (14), and a biasing arrangement (74) for biasing the connecting apparatus (42) and urging the seat frame (12) to the first position (38).

Abstract: A swing arm support housing is formed with a pair of openings spaced one from the other but each formed along parallel axis. One opening extends into but not through the housing and is on a size and configuration to be mounted on top of a lamp support post. The other opening extends completely through the housing and is fitted proximate each of its ends with aligned rings formed of a plastic material and retained in place by end rings. The aligned rings slidably and rotatably receive a lamp swing arm. At least one of such rings constitutes a clamping ring that has a longitudinal slit to permit distortion of the ring, proximate the slit and in a radial direction, to clamp same against the lamp swing arm to hold the swing arm in selected positions.

Abstract: The device comprises an effort-reducing gear means interposed between a fixed rack and a toothed sector for locking and unlocking the element. In this way, it is possible to achieve a fine adjustment while employing easily-produced large gear teeth.

Abstract: A concealable lighting fixture wherein the longer, vertically extending leg of a support frame is mounted in a vertically extending bearing in a bracket so that the frame is vertically shiftable in and rotatable with respect to the bracket. A diametrically extending support pin is mounted in the lower end of the longer leg for engaging a support surface on the upper end of the bracket. When engaged with the support surface, the support pin releasably retains the frame, and a lamp assembly on the upper end of the support frame, in an elevated operative position. In one embodiment, the bearing for the longer leg of the frame is provided by concave recesses in the inner faces of a pair of vertically extending flanges on one side of the plate portion of the bracket. In another embodiment, the bearing is provided by a tube welded to the plate portion.

Abstract: The invention relates to a displacement system for ophthalmologic examination units constituted of an instrument base section and an accessory section for mounting three ophthalmologic devices, said accessory section being connected by two lever means to said base section to enable displacement of the former relative to the latter from a first end position via an intermediate position into a second end position in the latter two positions relative to the said first end position the accessory section is displaced in parallel and at right angles relative to the base section so that the accessory section projects past over the base section. In this manner the opthalmologic devices are brought into an operation position in front of a patient and operator. A further lever system in combination with the lever means pivots a head rest to a patient in the intermediate and second end position, which head rest remains unchanged even when the ophthalmologic devices are changed for operation.

Abstract: The support comprises means for elastic longitudinal positioning of the upper chassis carrying the seat, constituted by a first rigid element (51) which is fixed in the horizontal direction with a lower chassis for fixing on the vehicle and which is situated between two further rigid elements (42A, 42B) fixed in the horizontal direction with an upper chassis (2) carrying the seat, while two opposed elastic elements (52, 53) are interposed respectively between the said first rigid element and the two other rigid elements.

Abstract: A motor-vehicle seat adjuster has a sun gear with which at least one planet gear is in continuous mesh. A link has an outer end carrying this planet gear and an inner end pivoted at the axis of the sun gear to allow pivoting of the planet gear between two angularly offset positions in each of which is meshes with a respective output gear. A control element is provided for displacing this gear between these two positions and the sun gear is rotated from an electrical motor. When the planet gear is in mesh with one of the output gears it displaces the seat in one direction and when in mesh with the other output gear it displaces it in another different direction.

Abstract: Apparatus for providing remote-operated two dimensional translation in a tical plane in an accurate and reliable manner for use in a laboratory sampling system, comprises two translation stages with a moveable slide affixed to one of such stages, mounted so as to be independently translatable in orthogonal directions in the vertical plane and are coupled to an integral drive system in such a manner so as to result in a compact unit.

Abstract: A mechanism for supporting an instrument which provides finger-tip adjustment in two or three directions is described. Torsional springs are used to counterbalance the instrument weight. An interconnected linkage arrangement permits vertical motion and horizontal motion in one direction. Horizontal motion in the other direction is obtained by axially sliding the instrument frame along shafts extending between pivot points of the interconnected linkage.An optional feature for ophthalmic instruments includes a mechanism for alternatively shifting the instrument in a horizontal direction between first and second chosen positions.

Abstract: A manually operable four-way seat adjuster mechanism comprising a horizontally movable carriage assembly, and a seat assembly connected to said carriage by bell-cranks. The bell-cranks at each side of the carriage assembly are connected by links, at least one of which in turn is provided with notches, and a correspondingly notched latch lever retains the link in adjusted latched position. Torsion bars interconnect bell-cranks at opposite sides of the carriage, each comprising a rod extending through a closely fitted tube, the ends of which are fixed to the bell-cranks. The ends of the rods are flattened and fixed to opposite sides of the carriage. A strong balance spring assists the bell-cranks, and the geometry is such as to provide a substantially uniform lifting torque to the seat throughout its range of adjustment.

Abstract: A tractor includes a seat swivelly mounted on a single seat support arm or member that is vertically swingably mounted on the chassis of the tractor for movement about a horizontal transverse axis between a generally horizontal forward position for disposing the seat in a forwardly facing position for tractor operation and a generally vertical rearward position for disposing the seat in a rearwardly facing position for backhoe operation. The axis about which the seat may swivel is related to the angular displacement of the arm from its forward to its rearward position such that when the arm is repositioned the seat may be repositioned by rotating it through 180.degree.. Latch members are provided for releasably retaining the arm and the seat in selected positions and a single control arm is connected to the latch members so as to simultaneously unlock the arm and the seat when it is desired to reposition the arm and the seat.

Abstract: A drafting stool having electric motors both for moving it along the floor parallel to the forward edge of a drafting table, and for changing the elevation of the seat. Provision is made for guiding its travel along the floor, for preventing overturning thereof, for initiating any desired adjusting movement by the occupant's lurching of his weight in various directions, and for bringing the stool to a halt at any desired position of adjustment either manually, or by means of preset limit control devices.

Abstract: A seat, particularly a vehicle seat, has a support element and a seat element which is located above the support element. An arrangement is provided for raising and lowering the seat element relative to the support element. This arrangement includes a lever having one end that is shiftably and arrestably mounted, and another end. A substantially U-shaped bracket has an open side facing away from the lever and the bracket is pivotally connected to the lever and has one arm that is pivoted to one of the elements, and another arm to which a strap is pivoted having a length substantially corresponding to that of the other arm and being connected to the other element and pivoted to the other arm, respectively.