Abstract: The invention pertains to a vehicle seat with a floor track assembly which makes it possible to change the number and/or the seating arrangement in a passenger compartment by displacing the seats on the floor tracks. It is proposed that a situation be achieved via a combination of a defined track profile and an arrestment mechanism whereby the displacement of the seats on the tracks can be smoothly carried out with large tolerances in a manner which is insensitive to dirt and whereby complete freedom from play and rattling of the seat assembly is nevertheless ensured in the arrested state.

Abstract: A seat for a vehicle with a scissor-like pivoting system and device for the adjustment of the inclination and/or height of the surface of the seat includes the feature that the device for the adjustment of the inclination and/or height must be space-saving and is not permitted to influence the pivoting system. Scissor-type sets of arms are proposed for the pivoting system whose upper arm-components are angularly adjustable and capable of being fixed relative to the remaining lower components of the same arm.

Abstract: The invention concerns a pneumatic spring-mounted vehicle seat with an electronic control, which controls at least the air valves of the pneumatic spring as a function of the swing strokes of the rocker system. It is proposed that an accurate analogous-path and time-equal electrical pattern be produced with only one swing stroke sensor for the swing strokes, and this sensor is applied continually to the input of a microprocessor, and thus this pattern can be compared, during the operational state of the seat and in constant recurring program sequences, with preset and, as the case may be, changeable event theoretical values.

Abstract: An automobile seat includes seat frame and backrest frame portions, each of which includes a pair of opposite side braces of generally U-shaped configuration which face away from the seating surfaces of their respective side frame and back rest frame portions. The side braces of the side frame and back frame portions define open channel-like areas for accommodating adjusting units of the seat.

Abstract: An actuating device for controlling the operation of a vehicle seat includes a central block movable about a central block shaft in four different directions to execute four distinct adjustment functions. A handle housing is mounted on a shaft perpendicular to the central block shaft. The handle housing is rotatable in fifth and sixth directions to execute distinct fifth and sixth adjustment functions.

Abstract: An air-sprung vehicle seat includes an air spring and a scissors linkage which are operative for adjusting the vertical height of the seat. The vehicle seat also includes a locking device for adjustably fixing the vertical height of the seat, the locking device including a fixing element which is articulated to the scissors linkage and a fixing device which is engageable with the fixing element for fixing the relative position thereof in the seat. The seat also includes a non-return valve which is responsive to actuation of the fixing device for controlling the admission of compressed air into and the escape of compressed air from the air spring.

Abstract: The invention concerns a vehicle seat having pneumatic suspension with automatic regulation of the seat height and an integrated height adjustment system. The height adjustment is designed in such a way that it can be used, even in the rest position of the vehicle seat, for the direct and precise setting of the selected static height of the seat. There is provided that, during the adjustment of the static height, tappet stops of control member are changed in such a way that during the adjustment process they render the valve tappets substantially free from play.

Abstract: A device for monitoring the operation of pneumatic seats for vehicles, the seats being supported by a pneumatically-operated spring to give a resilient seat mounting.The monitoring device operates at the commencement of use of the seat and also during use of the seat in case of possible leaks of air.Sensing elements are located at positions above and below a rated central position and are actuated according to movements of the seat from the centralposition. Actuation the sensing elements provides signals for a counter device which when an upper or lower limiting value is reached automatically resets itself to a starting value between the two limiting values and emits a control signal corresponding to the limiting value reached. The control signal operates an air valve for a predetermined length of time to supply air to or discharge air from the pneumatic spring.

Abstract: A vehicle seat assembly is for a vehicle seat having a back rest and a seat surface.The back rest is adjustable in inclination and the seat surface is adjustable in height and inclination.To reduce the height of the assembly and to enable the height and inclination of the seat surface to be adjusted independently of the back rest inclination, the seat frame is supported at its front end by levers. At the rear end of the seat frame is a support frame and a back rest frame, the back rest frame being movable relative to the support frame to raise and lower the rear end of the seat frame. The support frame and back rest frame are movable together about a horizontal axis to adjust the inclination of the back rest and the seat frame is suspended at its rear end on the back rest frame.

Abstract: A seat has a back rest 2 and an arm rest 12 the inclination of the arm rest being adjustable and the arm rest being movable from an in use position to an out of use raised position.In order to prevent the position of the arm rest being changed when the back rest inclination is changed the arm rest is attached to the seat by a parallelogram linkage. Of the four shafts of the linkage one 5 is the pivotal connection of the back rest to the seat frame, one 7 is the pivotal connection of the arm rest to the back rest, one 23 is at one end of a tie rod 13 by which the tie rod connects to the seat frame, and the last shaft is a spindle 14 connected to the other end of the tie rod.In its position of use the arm rest is releasably attached to the spindle and is released from the spindle when moved to the out of use position.The spindle is guided along an arcuate slot 20 in a plate 8 attached to the arm rest and pivotable about the arm rest pivot.

Abstract: A resiliently-mounted vehicle seat has a spring unit on the linkage between the seat frame and the underframe. The unit is interposed between the linkage and the seat frame and includes springs which extend between an extension of the linkage and the seat frame. The springs are connected to a bar which engages the extension at an adjustable position along its length to vary the restoring force of the springs on the linkage according to the weight of the occupant.Movement of the bar along the extension is controlled by virtue of a selective gripping action of the bar on the extension so that in the unloaded condition of the seat the bar does not grip the extension.As an additional feature a mechanism is provided for selecting the desired position of the bar on the extension when the seat is occupied, the bar moving when vibrations in the seat unload the unit.

Abstract: A resiliently-mounted vehicle seat is provided with means for adjusting its height.The seat is of the kind having a seat frame supported from an underframe by scissors linkages. A link of each scissor linkage has an extension piece which is engaged by a spring and damping unit. The extension piece is pivotable about a pivot about which the associated link also pivots. The extension piece is releasably securable to the link through an intermediate link.The arrangement affords an adjustment mechanism which gives fine adjustment of the height while not affecting the installation height of the seat.

Abstract: A resiliently-mounted vehicle seat has a resilient damped mounting between the seat frame and an underframe. The mounting seeks to avoid a construction which impedes up and down movement of the seat frame and tilting of a back rest pivotally connected to said seat frame.The seat frame is supported from the underframe by a scissors linkage and the scissors linkage includes an extension of one of the links which projects beyond the pivot for that link and carries a shock absorber. A cam surface is formed by the extension and a spring is carried on a shaft movable over the cam surface. The other end of the shock absorber and of the spring are carried on shafts mounted on an extension of the seat frame or the underframe.A feature of the arrangement is the facility to adjust the spring for different occupants with minimal force.

Abstract: An adjustment indicator for rotary spindles, comprising a hollow and at least partly transparent handwheel for operating the rotary spindle, and an indicator device disposed in the handwheel, the indicator device providing a reading which is controlled as a function of the revolutions of the rotary spindle.

Abstract: A vehicle seat that is adjustable in accordance with the weight of the occupant and that includes a frame on which are mounted scissor guides and a spring and damping unit that enables the scissor guides and seat to be adjustably moved to a desired position within a limited travel.

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.