Abstract: An adjustable automotive vehicle seat has independent front and rear edge adjusting and supporting means to provide for vertical adjustment of the seat between raised and lowered positions, and for tilt adjustment of the seat between an untilted position and a forwardly tilted position while preventing rearward tilting of the seat. A first control member is operable to provide only downward movement of the front edge of the seat, while a second control member is operable to provide only upward movement of the rear edge of the seat. A third control member is operable to provide either upward or downward movement of both front and rear edges simultaneously. Preferably the adjusting and support means comprises separate motors and the control members are switch operators.

Abstract: A vehicle seat has a subframe carrying an adjustment device which adjusts a eat portion by lifting it and moving it simultaneously forward. The adjustment device includes two linkages at the front and rear of the subframe respectively for supporting the front and rear of the seat portion. Each linkage carries a segment. A pawl is engageable with the segment to lock the linkage against movement thereby also locking the seat portion against movement. A spring biases the rear linkage with respect to the subframe to raise the seat portion upwardly. The segment of the front linkage forms a separate pivotal link in the linkage.

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.

Abstract: A seat-supporting assembly for locking and unlocking an automobile seat in selected vertical positions includes a seat rail, a floor rail, a rotatable latch member, a locking plate and manual lever. The latch member is pivotably mounted at one point to the seat rail and at a second point to the floor rail for permitting the selective adjustment of the relative positions of the rails upon its rotation and includes a plurality of spaced notches. The locking plate is rockably connected to one of the rails and has a pin for engaging a selected one of the notches in the latch member to lock the latch member in a selected position. The lever is rotatably connected to a rail to rock the locking plate to an unlocking position. The assembly includes a spring for urging the locking plate and the lever into a locking position.

Abstract: A seat adjusting mechanism has two vertical and one horizontal drive systems that are power actuated to control the attitude of the seat. The vertical drive systems are disposed between a seat support and a seat base which is connected to the seat support by a hinged link. The horizontal drive system is mounted on the seat support and is operable to move a seat platform relative to the seat support.

Abstract: A height adjustment mechanism for a vehicle seat cushion which permits selective vertical adjustments of the forward and the rearward portions of the seat. The seat support includes fore and aft brackets which extend downward from the seat cushion and are attached in a pivotal manner at their lower ends to outboard ends of link arms. The link arms extend in the fore and aft direction from a central location where they are pivoted about a common axis and supported by a stationary support or bracket means. Interaction between pins carried by the arms and vertically toothed sector means formed in the stationary bracket positively locates the arms in a preselected vertical position. The arms are movable within a range determined by the extent which the pins are free to move in the toothed sector or slotted apertures.

Abstract: An antenna pedestal for producing angular motion is formed of a base and upper and lower subassemblies. Pivot arrangements are provided between the base and the lower subassembly for enabling the lower subassembly to be angularly displaced with respect to the base about a pair of parallel axes by a pair of linear actuators which are connected between the base and the lower subassembly. The first of these actuators rotates the lower pedestal through a first arc sector and the other rotates the lower subassembly in a second arc sector which is in a common plane with the first arc sector. Likewise, the upper subassembly is supported on the lower subassembly with pivot arrangements located therebetween for enabling the upper subassembly to be angularly displaced with respect to the lower subassembly about a further pair of parallel axes which are orthogonal with the pair of axes about which the lower subassembly is displaced relative to the base.

Abstract: The vertical and angular position adjusting device for motor vehicle seats includes a pair of base frames and a pair of seat carriers, each base frame and each set carrier being linked by a support arm and by an elbow joint to form a five-bar linkage, the lower lever of the elbow joint and the support arm being provided respectively with a gear segment and the base frame portion between the two gear segments pivotably supporting a two-arm control member having each arm terminated with locking teeth cooperating with the corresponding gear segment to lock the latter in an adjusted angular position. The control member is spring-biased and guided in an oblong slot so that it is controllable by a handle out and into engagement with the gear segments.

Abstract: The vertical and angular position adjusting device includes at each lateral side of the seat a five-bar linkage including an underframe, a seat carrier bar, a pair of two-arm support levers pivotably connected to the frame, a coupling bar linked between the outer arm of one of the support levers and an end portion of the carrier bar, and the other end portion of the carrier bar being hinged to the outer arm of the other support lever. The support levers at one lateral side of the seat have gear segments formed on the inner arm of each support lever. A pair of arresting levers is linked to the underframe between the support levers and is provided with arresting teeth engageable with respective gear segments. A pair of switching levers is linked to the underframe between the arresting levers and is spring-biased to abut against a front locking surface provided on each arresting lever in order to hold the latter in a locking position.

Abstract: A seat height adjustment mechanism comprises a seat base frame mounted on a supporting fixture by means of front and rear sets of levers to enable the vertical height of the front and rear ends of the seat base to be adjusted relative to the fixture. Angular adjustment of the front and rear levers is effected by means of respective gear sets at opposite sides of the seat. The gear set associated with the front end of the seat base can be operated directly by the seat occupant and the two gear sets are linked by a selectively operable clutch device so that the rear end gear set can be operated simultaneously with the front end gear set if the clutch is in the operative condition. In this way, the seat is raised or lowered bodily at both ends. When the clutch is inoperative, the rear end gear set is not operated and only the front end of the seat is then raised or lowered.

Abstract: A vehicle seat has a seat cushion frame supported on a seat frame by height adjustment mechanisms located at the front and rear of the seat. The rear height adjustment mechanism comprises a hinge plate pivoted at opposite ends to the seat frame and to the rear edge of the seat cushion frame, a rack pivoted to the seat frame and formed with vertically spaced slots, and a locking pin carried by the hinge plate and engageable in any selected one of the slots. The rack is movable by a handle out of engagement with the locking pin to release the seat cushion frame for upward movement under the force of a biasing spring or for down movement under the load of the seat occupant. Release of the handle engages the locking pin with the slot of the rack lying nearest opposite it to lock the adjustment mechanism.

Abstract: An adjustable vehicle seat construction in which motor means is connected by a bracket to the seat slide, which also carries transmission mechanism for adjusting the position of the seat. The seat adjusting mechanism comprises interconnected levers at opposite sides interconnected by a torsion tube pivotally connected to side elements of the seat frame by elongated pins in driving connection therewith. In addition, mounting brackets are provided carrying carriage supports on which elongated carriage slides are longitudinally slidable. The mounting brackets at their forward ends include special abutment means engageable by the forward end of the carriage supports under abnormal stress such as may occur in collision.

Abstract: A vehicle seat structure comprises a seat pivotally connected to swing link means which are in turn pivotally connected to the base by substantially parallel links to allow the vehicle seat to be both raised and lowered or tilted with respect to the base. A height select pin and a tilt select pin are normally restrained within notches in respective height and tilt position members to fix thereby a given height and tilt attitude of the seat. An actuating bar controlled by a control lever acts to disengage either the height select or tilt select pin to permit the pin to be seated in a different notch, thereby enabling seat position to be varied. Compression springs act, for both tilt and height seat position variations, to provide means whereby the weight of the seat operator can be used to adjust seat position.

Abstract: An apparatus for selectively positioning an automotive vehicle seat is disclosed. The apparatus is adapted to be powered by an electric motor drive, such as a motor with multiple armatures or by using separate motors or by using clutch activated members driven by a single motor. Output of the motor drive is transmitted through respective gearing to lead screws within tracking structures at both sides of the seat to translate the seat horizontally. The motor drive output is also transmitted to operate individual lead screws for the vertical seat movements. To provide elevational movement of the front and rear ends of the seat, separate mechanisms from the motor drive to front and rear end lead screws are provided, these mechanisms being distributed along the seat width. These lead screws cause rotation of respective individual torsion bars at the respective front and rear ends of the seat. By the construction shown, rotation of a torsion bar raises or lowers the respective seat end.

Abstract: An adjustable support apparatus adapted primarily for antennas wherein most of the load is carried by pivotal rigid structural members and the drive members are subjected to a much smaller force. An embodiment is also described illustrating selferection principles.