Abstract: A back frame for a seat, particularly a power vehicle seat, has a transverse member, and two side members each having one end connected with the transverse member in a connecting point and another end provided with a connecting ear for connecting with a hinge of a seat pad frame, each of the side members having a U-shaped cross section with a web and front and rear legs connected with the web, the web of each of the side members narrowing from the connecting ear to the connecting point of the respective side member, the rear leg of each of the side members also narrowing from the connecting ear to said connecting point of the respective side member and having in the region of the connecting ear an assymetrical cross-section as compared with said front leg, wherein one side member is provided with a wall part which is profiled relative to a perpendicular to the web of at least one side member.

Abstract: A hinge unit for a seat, particularly an automotive vehicle seat, has a fixed hinge element associated with a seat part of a seat and including an upper region provided with a recess with an end abutment, a pivotable hinge element associated with a back part of the seat and pivotably connected with the fixed hinge element, a two-side catch lever pivotally connected with the pivotable hinge element and having a locking projection engageable with the abutment of the fixed hinge element and a heavy arm with a weight urging the catch lever so that the projection assumes its free position, and a retaining element urging the catch lever so that the latter assumes its locking position.

Abstract: A height adjustment arrangement for a motor vehicle seat has a plurality of pivotable supports each having one end portion arranged at a fixed height relative to a vehicle floor and another end portion hingedly connectable with a seat portion, and a plurality of pairs of separate supporting elements arranged so that each pair of the supporting elements is pivotably connected with a respective one of the pivotable supports. A first supporting element of each pair is mounted on the seat portion, whereas a second supporting element of the same pair is mounted at a fixed height relative to the vehicle floor.

Abstract: A hinge, particularly for a seat with an adjustable back rest, has two hinge parts and an adjusting and fixing transmission including an internal gear and a spur gear therebetween and an axle provided with an eccentric, wherein the spur gear and the internal gear are formed as cup-shaped members connected for joint rotation with the hinge part, and the cup-shaped member forming the spur gear has teeth on its outer surface, whereas the cup-shaped member forming the internal gear has teeth on its inner surface.

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 hinge has two hinge parts pivotally connected with one another and an adjusting and fixing device including interengaging external and internal gears, wherein each gear has an annular groove formed by deformation in the region of its teeth root circle so that during formation of the annular groove the material is displaced toward the teeth tips of the respective gear.

Abstract: A fitting for adjustably connecting a backrest part to a seat part of a seat, particularly an automotive vehicle seat, includes a backrest mounting member and a seat mounting member which are respectively connectable to the backrest and seat parts of the seat. A ring gear is formed on the backrest mounting member and has a predetermined number of inwardly directed teeth centered relative to a ring-gear axis. A spur gear is located intermediate the backrest mounting member and the seat mounting member and has a number of outwardly directed teeth which is at least one less than the predetermined number of teeth on said ring gear. The outwardly directed teeth of the spur gear mesh with the inwardly directed teeth of the ring gear and are centered relative to a spur-gear axis.

Abstract: A hinge, particularly for a seat with an adjustable back, has two hinge parts movable relative to one another about a pivot axis between a plurality of relative positions, a rotatable shaft member defining the pivot axis, and an adjusting device for adjusting the relative position between the hinge part and formed as a transmission, wherein the adjusting device includes an eccentric with an inclined surface and a bearing with an adjusting surface on which the surface of the eccentric abuts. The shaft member together with the eccentric is displacement in an axial direction with the aid of an accumulator for obtaining a radial displacement between the hinge parts.

Abstract: A swivel joint, especially for seats with an adjustable back rest, comprises two link members connected to each other by a pivot pin and a device for angularly adjusting the two link members with respect to each other and for holding the same in any adjusted position and comprising an internal spur integral with one link member and meshing with a spur gear integral with the other link member in which one of the gears is mounted on an eccentric portion of a pivot pin, wherein at least one and preferably both gears are provided at the base lands thereof with elastic buffer elements for compensating tolerances and for eliminating noise.

Abstract: An apparatus for setting a fitting element which is adjustable relative to a support element to various positions, particularly a fitting element for vehicle seats is disclosed. The apparatus includes a locking device which is self-arresting under a load from the return force and having at least two locking elements which engage each other by teeth means which prevent movement of the fitting element, one of said locking elements positioned on the fitting element and the other of said locking elements being movably guided on the support element and movable forcibly only into the locking position against a return force by means of said activating member.

Abstract: The invention relates to a frame for a longitudinally and height-adjustable vehicle seat, having a bracket which is pivotable about a lateral axis. This frame is supported on the lateral axis and on respective height adjustment racks which are spaced from the lateral axis on either side of the seat and extend in the pivot direction thereof. The racks each mesh with respective gears of a height adjustment drive connected with the bracket. The frame also has guide rails in which respective runners are longitudinally guided, each of which, together with a longitudinal adjustment rack, forms a structural unit. Respective gears of a longitudinal adjustment drive, connected with the guide rails, engage these racks.

Abstract: Position adjuster for the angular or vertical adjustment of a motor vehicle seat or for lifting a window, includes two mount levers connected respectively to a pair of wobble gears controlled by an eccentric; the eccentric is formed of a carrier disk rigidly connected to a rotary shaft and defining a concentric circumferential portion limited by two radially directed abutment surfaces and forming with the center of the shaft an angle of more than 180.degree.; the eccentric part is formed of two circumferentially movable wedge-like segments urged one from the other by a pressure spring so that during the rest position of the adjuster the segments are in their locking position, in which radial play in bearings and backlash in the teeth of wobble gears is eliminated; during the rotation of the shaft, one of the segments is displaced against the biasing spring and radial play facilitating the manipulation is introduced between the wobble gears.

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: A seat adjusting mechanism, arranged to be operated by an electric motor, for use with a motor vehicle seat is disclosed. The seat adjusting mechanism is supported by at least two slide tracks which extend along the length of the seat and which are placed through glide tracks each spaced away from the vehicle floor. The seat adjusting mechanism comprises at least one rack situated on one of said guide tracks and extends along the length of the guide track. The rack has one end connected by means of a connecting body to the slide track lying above it. The rack contains a long slot which has teeth formed on one side thereof for contacting a pinion which is situated to engage the teeth and is connected to an electric motor for movement of the seat adjusting mechanism. The width of the long slot in the rack serves to retain the pinion in engagement with the teeth of the slot.

Abstract: The adjustable hinge mount for seats having a reclinable backrest includes a pivot axle rigidly connected at one end thereof to the hinge mount member assigned to the seat proper and supporting for rotation an eccentric disk which in turn supports the tiltable hinge mount member assigned to the backrest and being formed with a spur gear which engages the inner gear of the wobble gear assembly formed on the seat hinge mount. The threaded pin of the pivot axle engages a locking nut controlled by a spring biased and hand operated lever which normally brings the locking nut into engagement with the face of the eccentric disk and rigidly connects the same to the pivot axle so that the reclinable backrest is arrested in its adjusted angular position.

Abstract: The adjustable hinge mount for motor vehicle seats having a reclinable seat back comprises means for holding respective hinge members of the mount in a fixed axial position. The holding means comprises a bearing shield supported for rotation on the rotary axle interconnecting the two hinge members. The rim portions of the shield above the rotary axle and on the level of the latter are connected to the outer hinge member assigned to the seat back in such a manner that substantially no axial play takes place. The lower range of the outer hinge member is secured against axial play by means of a Z-shaped guiding plate integrally connected to the hinge member assigned to the seat proper.

Abstract: A hinge mount for seats having reclineable back rest includes two hinge parts pivotably connected one to another. The hinge part assigned to the back rest is formed with an arresting serration cooperating with an arresting pawl supported for rotation on the fixed hinge part; a control mechanism including a cam segment is rigidly connected to a driven gear supported for rotation on the fixed hinge part and controlled by a driving gear segment manually operated by a spring biased lever. The radius of the cam segment is larger than the radius of the driven gear and extends approximately about a central angle of 120.degree..

Abstract: The vertical position adjuster for motor vehicle seats includes two pairs of adjusting gear units, each pair being driven by a separate motor and each unit including an input screw mechanism having its nut connected to a tooth rack which meshes with a gear segment rigidly connected to one arm of a swing support in the form of a bell crank. The apex of each bell crank is hinged to the housing of the gear unit and the other arm of the bell crank is hinged to the seat frame.