Abstract: A vehicle seat, especially a motor vehicle seat, includes an adjustable device which permits adjustment of the seat part, relative to the freely pivotable backrest. The cushion support of the seat part, at least in one position of the cushion support above its lowermost position, can be moved before or at the beginning of a free pivoting motion of the part of the backrest forwards and/or downwards at least in the region of its rear section, and can be moved back into its starting position after or while the backrest pivots back into its starting position.

Abstract: A vehicle seat which is adjustable both with regard to its height and angle of inclination has front and rear height mechanisms which can be operated independently of one another. Each of the height adjustment mechanisms has at least one lever, which levers are pivotable about an axis running in the lateral direction of the seat. The upholstery support of the seat is supported on support points of these levers, which lie at a distance from their pivot axes. The front and rear height adjustment mechanisms are connected with a coupling drive, which, when the front height adjustment mechanism is activated limits the height adjustment of this front height adjustment mechanism, and when the rear height adjustment mechanism is activated, the height adjustment of the support point thereof is transferred to the support point of the front height adjustment mechanism.

Abstract: In a vehicle seat having a safety belt system, the belts of which are connected with the seat frame in the area of the upper end section of the back rest at two upper connecting points lying spaced from each other in the lateral direction of the seat, and in the area of the rear end of its seat portion, the lower end of its back rest or its support slide rails at two lower connection points provided on the respective sides of the seat, the two lap belts are guided along the respective pivot arms (12,12') which are connected with the seat frame in the area of one or the other of the lower connecting points (5) so as to pivot about respective axes extending in the lateral direction of the seat. The two pivot arms (12,12') are formed to resist bending in the pivot direction but to bend elastically laterally thereto. The one pivot arm (12) is connected with the other pivot arm (12') by a transmission that forces an opposite pivot direction.

Abstract: A vehicle seat which is adjustable both with regard to its height and angle of inclination has front and rear height mechanisms which can be operated independently of one another. Each of the height adjustment mechanisms has at least one lever, which levers are pivotable about an axis running in the lateral direction of the seat. The upholstery support of the seat is supported on support points of these levers, which lie at a distance from their pivot axes. The front and rear height adjustment mechanisms are connected with a coupling drive, which, when the front height adjustment mechanism is activated limits the height adjustment of this front height adjustment mechanism, and when the rear height adjustment mechanism is activated, the height adjustment of the support point thereof is transferred to the support point of the front height adjustment mechanism.

Abstract: In a back rest for a vehicle seat, the upholstery support is provided at least in one upper corner area in its front side with an opening to form a receptacle for a belt retraction device, which receptacle is open toward the front and closed at the rear by a back wall lying behind and spaced from the front side. An upper and a lower wall, which form the top and bottom of the receptacle, are connected with the front wall and/or the back wall and are spaced from each other so as to allow the receptacle to receive the belt retraction device without play. Form-fitting, overlapping restraining elements on the upper wall and the facing upper side of the belt retraction device, as well as on the back wall and the facing back side of the belt retraction device, together with a connecting element that engages the underside of the belt retraction device, secure the retraction device against being moved out of the receptacle.

Abstract: A hinge fitting for pivotably and selectively locking the back rest of a vehicle seat to the vehicle frame has two planetary gear sets, formed as mirror-images of one another. Both sets have the same reduction ratio and the eccentrics of the two planetary gear sets are rotated toward each other at most by a small angle.

Abstract: A vehicle seat has a back rest and support surface for supporting the vehicle user, in which at least one portion of the support surface facing the seat user forms at least the outside of a wall, the inner side of which wall borders at least one channel through which air flows. The wall is at least substantially impermeable to air at the pressure prevailing in the channel and comprises a material which, when there is a drop in the water vapor partial pressure from the outside to the air flowing through the channel, transfers water vapor in the direction of this partial pressure drop.

Abstract: A vehicle seat having an upholstery support that supports the upholstery of the back rest has at least one arm provided on the upholstery support which extends over the shoulder of a seat user and restrains the user in the upward and outward directions during vehicle collision. A side restraint member is connected with the arm and configured so as to protect the user in a lateral direction without interfering with the freedom of movement of the user.

Abstract: An arrangement for adjusting a seat of a vehicle has a plurality of adjusting elements arranged to adjust the position of the seat, a drive motor, and a distributing transmission provided within the drive motor and the adjusting elements and including a plurality of driven shafts having gears and connected with the adjusting elements, and at least one intermediate gear driven by the motor, wherein the distributing transmission includes a stepping transmission arranged so that, with a selectable step, the stepping transmission brings the intermediate gear into driving engagement with a gear of a respective one of the driven shafts, and the intermediate gear is fixed in this position without preventing its rotation about its axis.

Abstract: A brake-type spring coupling for transmission gears for an adjuster comprises a shaft, a transfer cam rigidly secured to the shaft, a pair of follower segments freely rotatable about the shaft on each side of the transfer cam, a coupling cylindrical segment rotatable about the shaft to impinge against one of the follower segments, a brake drum surrounding the shaft and the supported cam, followers and coupling segments, a helical spring having its windings in frictional contact with the inner wall of the brake drum and having its end portions anchored in respective follower segments, an abutment surface formed in a lateral wall of the transfer cam to stop one of the follower segments and an adjustable ring segment secured to the other side of the transfer cam to stop the other follower segment.

Abstract: The inclination adjuster for motor vehicle seats having a seat carrier extending at lateral sides of the seat and being pivotable at its rear end about a pivot axle supported for rotation on a guiding track assembly, includes gear segments secured to the lateral sides of the track assembly; a transverse axle supported in horizontal guiding slots in the side walls of the seat carrier and each supporting for rotation a gear pinion; a holding bracket having a vertical cutout defining superposed recesses for receiving the shaft in a selected vertical position of the seat and a free vertical passage; and a hand-operated and spring-biased arresting linkage normally urging the transverse shaft into the selected recess and permitting the movement of the shaft in the guiding slot to adjust the vertical position of the seat when actuated.

Abstract: The articulated mountings for vehicle seats includes two hinged parts, one part being formed with a spur gear and the other part with a geared rim of larger diameter and engaging the teeth of the spur gear. The gear rim is mounted for rotation on a pivot axle. The axle supports for joint rotation an eccentric disk which in turn supports for rotation the spur gear. To eliminate backlash in the bearing surfaces and in the meshing teeth of the gears, the eccentric disk is coupled to the pivot axle on a non-circular coupling section which engages two opposite sides of the eccentric recess in the eccentric disk but permits radial displacement of the latter. A setting mechanism preferably in the form of a resilient cushion or in the form of a biasing spring keeps the eccentric disk in its eccentric position.

Abstract: Hinge fittings such as disclosed in U.S. Pat. No. 3,999,247 for a vehicle seat having an adjustably tiltable backrest member including pivotally connected hinge members one of which has a toothed sector engaged by a toothed pawl pivotally mounted on the other and held in locked engagement by a cam also pivotally mounted on the other hinge member. The cam has a limited pawl engagement face having an intermediate operative range when all lost motion is taken up with the teeth in full locking interengagement covering the extremities of all tolerance possibilities of the interengaging elements and with irreversible self-locking action against cam disengagement under any vibratory or backrest pivotal tilting pressure in either direction.

Abstract: An apparatus for adjusting the optimal seat position in a vehicle for a particular individual and for particular driving conditions is disclosed. A computer with a memory is programmed with specific vehicle parameters and at least one computer program and includes an entering device for entry into the computer of specific data about the individual user and the driving conditions. The computer supplies output data which may be used for manual adjustment of the seat position or which may be connected via a control device to servomechanisms which automatically optimally position the seat for the individual and the driving conditions.

Abstract: A mechanism for adjusting the inclination of a backrest of a vehicle seat includes two hinges each at one side of the seat and each including two hinge members respectively secured to the seat component and the backrest component of the seat and mounted on each other for tilting. Each of the hinge members has an internal gear annulus, the gear annuli of the two hinge members having the same diameter but different numbers of teeth. A support element is mounted for rotation in the space bounded by the gear annuli and has a cross-sectionally elliptical peripheral surface. An elastic band embedding a plurality of uniformly distributed pins is supported on the peripheral surface of the support member and meshes with both of the gear annuli at the region surrounding the major axes of the elliptical generatrices of the peripheral surface of the support member.The number of pins which engage via the band both internal gear annuli corresponds to the number of teeth of the annulus which has the smaller number of teeth.

Abstract: The hinge for a reclinable backrest of a motor vehicle seat includes two symmetrically bifurcated hinge parts. The first hinge part is connected to an external gear annulus and the second hinge part to an internal gear annulus engaging a part of the teeth of the external gear annulus. An eccentric bolt is rotatable about a pivot axis and has an eccentric control zone supported for rotation in the center bore of the external gear annulus and in the corresponding bores of the first hinge part. The second hinge portion is supported for rotation on the zones of the bolt which are concentric with the pivot axis.

Abstract: A fitting for a vehicle seat having a tiltable backrest member includes one hinge member that is connectable to the backrest member and another hinge member that is connectable to the backrest member. A pivot arrangement connects the hinge members for relative pivoting movement, and an arresting arrangement is provided for arresting the hinge members in selected relative angular positions. The arresting arrangement includes a tubular boss on at least one of the hinge members and a pawl that is journalled on the boss for turning movement about the same. A screw or bolt extends through the boss and connects the hinge member to the associated seat member or backrest member.

Abstract: In a vehicle seat having a safety belt system, the belts of which are connected with the seat frame in the area of the upper end section of the back rest at two upper connecting points lying spaced from each other in the lateral direction of the seat, and in the area of the rear end of its seat portion, the lower end of its back rest or its support slide rails at two lower connection points provided on the respective sides of the seat, the two lap belts are guided along the respective pivot arms (12,12') which are connected with the seat frame in the area of one or the other of the lower connecting points (5) so as to pivot about respective axes extending to the lateral direction of the seat. The two pivot arms (12,12') are formed to resist bending in the pivot direction but to bend elastically laterally thereto. The one pivot arm (12) is connected with the other pivot arm (12') by a transmission that forces an opposite pivot direction.