Abstract: In a method of moving a person (30) of limited mobility there is used a wheelchair (1) having a back part (2) and a leg support or foot-support part (4), these parts being pivotally connected to an intermediate seat part (3) and being pivotable between a sitting position, in which the parts form an angle with one another, and a horizontal position in which the aforementioned parts are substantially in register with one another. These parts of the wheelchair can also be swung about a further pivot point (6) located in the region of the center of gravity of the person (30) occupying the wheelchair. The seat part (3) and back part (2) of the wheelchair are swung about the further pivot point (6), with their mutual relative positions unchanged, until the major part of the pivotal movement of the back part towards its horizontal position has been completed.

Abstract: An adjustable chair includes a seat portion having a convex undersurface and a base portion having a concave upper surface. Low profile roller assemblies are fixed in a spaced apart relation along the convex undersurface. Tracks are affixed along the concave upper surface of the base portion. The roller assemblies are adapted for rolling contact with the tracks. A power transmission assembly has a first end which is pivotably coupled to the seat portion and has a second end which pivotably connects to the base portion. The power transmission assembly moves the seat portion along an arcuate path defined by the base portion. A noise dampening preload spring is associated with the second end of the power transmission assembly.

Abstract: There is disclosed double airplane seats disposed in a side-by-side, inboard and outboard relationship with respect to their disposition in an airplane fuselage. The seats have a common base member provided with a pair of tracks on the bottom thereof which cooperate with a pair of tracks located on the floor of an airplane fuselage and which moves in a fore and aft direction. Fore and aft tracking is located on the top of the outboard portion of the base member and an opening is located in the top inboard portion thereof with a clutch located therein adapted to move universally in fore, aft and lateral directions.

Abstract: The front end of each side linkage of an ottoman thrusting/retracting pantograph linkage system for a motion chair is provided by a link, pivotally mounted to respective front end links at two vertically spaced sites. For each side, an ottoman mounting bracket is provided, having a generally vertical-plane flange and a transverse flange. The ottoman is secured to the two transverse flanges, and the vertical-plane flange, which extends below the transverse flange, is pivotally secured near its lower end to a corresponding lower end site on the pantograph front end links. The vertical-plane flanges of the ottoman-mounting brackets lie outboard of and in planes parallel to those of the respective front end links. A tension coil spring is provided at each side for tending to keep the ottoman positioned across the front edges of the front end links.

Abstract: Apparatus for controlling a plurality of power seats in a vehicle includes a plurality of power seats, each having adjusting mechanisms for configuring the power seat in a number of different operational states. Operational state detectors then detect the operational state of each power seat. A switching device is provided for adjusting the adjustment mechanisms of the power seats to a desired operational state. Control apparatus is responsive to signals output from the operation state detection devices and the switching device for controlling the adjustment mechanisms of the power seats. The control apparatus causes each power seat to reach its desired operational state in response to the detected operational state of that seat and other power seats to prevent interference among the plurality of moving power seats.

Abstract: A patient trolley has a tiltable upper body support which is hydraulically lifted to a raised "heart" position and which is immediately lowered by a quick release valve so that a patient may be quickly treated in a horizontal position. Two cylinders are mounted on trunnions with distal ends of pistons interconnected to upper body supports so that the cylinders extend downward and toward a head end of the trolley from the trunnions. As the upper body support is lifted the cylinders rotate on the trunnions toward the head end of the trolley. In the down position of the upper body support the cylinders and trunnions may be lifted and held in an inactive position for clearance of hospital equipment. Levers and linear bearings enable the upper body support to be raised to substantially perpendicular position and to be quickly lowered.

Abstract: A vehicle seat adjustable by at least one servo element (1) comprises a servo element control unit (2), an adjusting circuit (4) for the presetting of desired positions, and a memory circuit (3) programmable with the desired positions for the selection and restoration of preset desired positions. The adjusting circuit (4) is separated from the memory circuit (3), the memory circuit (3) containing at least one read-write memory (3.sub.i), and each of these circuits (3, 4) being individually connected to respectively one input (E.sub.1 and E.sub.2, respectively) of the servo element control unit (2).

Abstract: Disclosed is a seat for vehicle which is pneumatically controlled for a desired body pressure distribution of a person seated in the seat, comprising: a plurality of air bags embedded in a seat; an air pressure source; a single first conduit connected the air pressure source at its one end and branched off into a plurality of second conduits leading to the air bags at its other end; a plurality of on-off valves each provided in the corresponding one of the second conduits leading to the air bags; an exhaust valve connected to the first conduit at its one end and to the atmosphere at its other end; a single pressure sensor provided in the first conduit; and control means connected to the air pressure source, the on-off valves, the exhaust valve and the pressure sensor; the control means comprising means for storing predetermined air pressure values for the air bags, means for selectively opening and closing the on-off valves and the exhaust valve, and means for preventing the valve opening and closing means fo

Abstract: An adjustable seat assembly which comprises a seat bottom and a seat back, a reclining mechanism for connecting the seat back to the seat bottom for the adjustment of the tilt of the seat back relative to the seat bottom, a slide mechanism for mounting the seat bottom on a support surface for the adjustment of the position of the seat in a direction along the support surface, and a multifunctional handle supported for movement in at least first and second directions for controlling the reclining and slide mechanisms, respectively. Where the seat assembly further comprises a seat lifting mechanism for the adjustment of the height of the seat above the support surface, the handle may be rendered movable also in a third direction, in which case the first and second are opposite to each other and the third direction is perpendicular to any one of the first and second directions.

Abstract: A biophysiometer having two seat sections which support the right and left sides respectively of a person's body, and are adapted for relative vertical movement and relative tilting movement to positions displacing the two sides of the body relative to one another in a manner tending to correct an abnormal posture condition or otherwise attain a desired treatment effect. The two seat sections are preferably supported by a balancing connection operatively interconnecting them in a relation in which downward movement of one of the sections causes upward movement of the other section, and vice-a-versa. Desirably, the apparatus includes automatic control means which respond to displacement of the two seat sections relative to one another by the weight or positioning of a person's body, and then automatically actuate the seat sections to changed relative positions tending to correct the posture or other abnormal condition sensed by the device.

Abstract: A piece of furniture comprises a stand, a seat and a back support pivotable with respect to the seat as well as an upwardly and downwardly pivotable leg support which is provided with a foot-rest, at least one operating means being arranged to, at pivoting of the back support backwardly from a sitting position, in which the feet of the user are resting on the foot-rest, and a simultaneous pivoting of the leg support upwardly and forwardly, cause such a relative movement between the foot-rest and the seat that the knee-adjacent leg portions of the user remain in supporting contact with the supporting areas of the piece of furniture. The operating means is also adapted to, at the pivoting of the leg support upwardly and forwardly, cause a movement of the seat in the direction backwardly relative to the stand and thereby relative to the pivot axis of the leg support.

Abstract: An invalid wheelchair/litter having improvements in the areas of a cushioning cylinder that softens the lowering motion from the chair configuration to the litter configuration to protect the patient, providing removeable upholstery which permits use of slip covers and quick and easy cleaning of the apparatus, and improved foot rest structure having numerous advantageous features.

Abstract: There is disclosed an airplane seat having a base member provided with a pair of tracks located on the bottom thereof which cooperate with a pair of tracks located on the floor of an airplane fuselage and which moves in a fore and aft direction. Located above the base member is an adjustable seat base and adjustable back member pivotally joined thereto. The seat base is connected through a shaft which cooperates with a clutch located in an opening in the top of the base and which permits universal movement of the seat base in fore, aft and lateral directions independently of the movement of the base member in a fore and aft direction.

Abstract: A reclining chair having a stationary frame, a moveable seat/back occupant support, and a leg rest. The chair includes quadrilateral linkages and extender linkages on each side in order that the seat/back occupant support may be tilted backwards while the leg rest is extended upward and outward. The leg rest of the chair is detachably connected to the pair of extender linkages by use of studs on the leg rest and mounting holes on the tip of the extender linkages. This permits the leg rest to pop off if a person interferes with the leg rest as it is being retracted, thus avoiding serious injury.

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: The wheel chair of this invention has its seat member supported for raising and lowering on a chassis having a castering rear wheel and two relatively small front wheels rotatable on a common axis, each driven independently of the other by a reversible electric motor. A brake member is pivoted to the chassis to swing up from and down to an extended position in which the rear wheel is above the surface and the brake member cooperates with the front wheels to support and immobilize the wheel chair. Swinging legs so support the chair element on the chassis that as the chair element is lowered it moves forward over the footrest so that the footrest does not hamper the occupant in transferring to and from the wheel chair.

Abstract: A seat for vehicles is provided with a reclining device and a remote control means for remotely controlling the reclining device, in which seat an arm rest is pivotally mounted and provided at its forward end portion with the remote control means and at its upper portion with a recessed portion for receipt of one or more small articles. The arm rest has a linking mechanism arranged therewithin for mechanically linking the remote control means to the reclining device. The linking mechanism comprises a rod connected to the remote control means, a substantially V-shaped arm having a first leg portion and a second leg portion, of which leg portions the first leg portion is connected with the rod, an operation wire connected to the second leg portion of the substantially V-shaped arm and further connected to the reclining device and a spring extended between the first leg portion of the arm and the inner wall of the arm rest.

Abstract: A vehicular seat for handicapped and elderly persons is disclosed which is readily accommodated in any type of conventional vehicle, such as automobile, van, bus and the like. The vehicular seat is given three degrees of freedom of movement, the first degree being a rotary one in a horizontal plane about a shiftable vertical axis of rotation, the second being a rectilinear one in a horizontal plane, and the third being rotary in a horizontal plane about a fixed vertical rotary axis. The three degrees of freedom allow for angular positioning of the seat proper relative to the ajar door, so as to ensure minimal interference between the person being seated and the frame and ajar door of the vehicle.

Abstract: A boosting device is disclosed for a toilet seat. The boosting device includes a stationary frame having handrails. A seat frame assembly is pivotally coupled to the stationary frame by pivot pins. A single, ball screw motor and a lift arm are provided for pivotally moving the seat frame assembly relative to the stationary frame.

Abstract: A pair of link plates, each pivotally connected at one end to a seat base and each pivotally connected at their other ends to a seat plate and seat supported thereby, constrain the seat plate and seat to a rearward and upward movement, or a downward and forward movement, with respect to the seat base. The plunger, of a hydraulic cylinder pivotally carried by the seat base, is pivotally connected to the seat plate so that when actuated it induces movement of the seat plate to its rearward and upward position. A seat back is pivotally connected to the seat base and to armrests carried by the seat plate so that movement of the seat in the upward and rearward direction moves the seat back to a downward position aligned with the seat. A footrest linkage is connected between the seat back and a footrest connected to the seat so that movement of the seat back into its downward position moves the footrest into an upward position aligned with the seat and seat back.

Abstract: A dental chair operating apparatus developed in relation to the underseat and the backrest. The uses for the present chair and integral underseat and backrest configuration include human dental, medical, beauty parlor, and barber shop treatment facilities and installations. The present chair, e.g. a dental chair, is one with a hip section of the underseat baseboard on top of a vertical motion apparatus on top of a base plate; a movable circular arc board with backrest baseboard tilts by an oil-pressured cylinder. The present chair configuration is basically automatic, however it may also be manually manipulated.

Abstract: An arrangement for adjustment of seats has a seat support which is connected with rails associated with a vehicle bottom. The front end region of each lateral support member is connected via a swinging member with the associated rail in a pivotable manner. Each swinging member has a toothed rack in which a pinion supported in each lateral support member engages, and the pinion is arranged on a shaft extending through the lateral support members. An actuatable locking device fixes the pinion in the toothed rack together with the seat support in selected positions in stepped manner. For lifting or lowering the front and the rear seat region independently of each other, or together with each other, the rear end region of each lateral support member is also supported on a shaft extending through the seat support and fixedly connected with a pinion associated with each lateral support member.

Abstract: A power-operated medical examination table having safety mechanisms for preventing injury or damage should someone or something become entrapped beneath the top of the table as it descends. The table includes a pedestal base having an extendable and retractable column. The top normally rests upon a load-bearing member which may be selectively raised or lowered under power to extend or retract the column. Should the top engage an obstruction during a lowering operation so that a separation occurs between the load-bearing member and the top, a sensor detects such separation and immediately interrupts power to prevent continued retraction of said load-bearing member. The table also includes at least one power-operated outer top section that is hinged to the central top section and is supported by a second load-bearing member and power drive arranged to constitute a secondary safety mechanism.

Abstract: A neutral body posture chair to support a user in a neutral body posture position defined as the natural position a body assumes in weightlessness where the muscle, tendon, and ligament systems acting over the joints are in total balance wherein the trunk of the body forms an angle of approximately 127 degrees with respect to the upper legs and the upper legs form an angle of approximately 127 degrees with the lower legs. The chair includes a seat formed into a bowl at the pelvic area, leg troughs support the upper legs and raised sides to maintain the user in the selected position. The seat further includes an elevated pommel which supports the pubis bone of the user to maintain the user in the desired neutral body posture angle without sliding out of the seat. The chair assembly includes a back rest, footrests, and a suitable base. The chair includes means for adjusting the vertical height of the seat, the tilt angle of the seat, the angle of the backrest, and vertical height of the backrest.

Abstract: A patient support is disclosed having a contoured upper body support with an integral lumbar support area. The lower body support is curved at the knee and likewise contoured for patient comfort. The upper body support is pivotally attached to the lower body support at a point simulating the pivotal location of the human hip. A drive linkage raises the toe area of the lower body support simultaneously with, but only for the initial reclining movement of the upper body support, maintaining the oral cavity in fixed relation to the head support. Arm supports are upwardly rotatable from a down, locked position to an up, unlocked position. The patient support has automatic recline and sit-up mechanisms with emergency stop circuitry.

Abstract: A power seat recliner, comprising a transmission housing, a motor rigidly fixed directly to and supported by the transmission housing and having an output shaft extending directly into said housing, a seat back mounting pivoted to said housing and including an arm having a sector gear thereon, transmission gearing in said housing, and resilient drive means connecting the motor output shaft to said gearing. The motor axis is located such as to position the worm on its output shaft at a space-conserving location within the transmission housing.

Abstract: A multi-position examination chair for supporting a patient and assuming sequentially a plurality of obstetric and gynecologic examination positions includes a base. A chair mounted on the base includes a back portion pivotally attached to the base and a seat portion pivotally attached to the back portion. A first linear actuator pivotally moves the back portion into a desired position relative the base, and a linkage cooperates to cause a predetermined amount of pivotal movement of the seat portion relative to the base in response to pivotal movement of the back portion. A second linear actuator power means pivotally moves the seat portion into a desired position relative the back portion. Actuation of one of a plurality of switches cooperates with a control system for movement of the back and seat portions from one of the examination positions to at least a next following one of the positions within the sequence.

Abstract: A motor vehicle seat assembly including a base portion affixed to the motor vehicle, a seat portion movably attached to the base portion, and a seat adjustment mechanism operatively interposed between the seat portion and the base portion for enabling selective adjustable movement of the seat portion relative to the base portion. In order to enable a passenger's safety belt to be attached at the movable seat portion, a locking pin mechanism is provided which may be selectively activated to lock the seat portion relative to the base portion thereby to prevent relative movement therebetween. The seat adjustment mechanism may be formed with a longitudinal seat adjustment device which enables forward and rearward movement of the seat portion and with tilt adjusting devices enabling height adjustment of the seat. The locking pin mechanism may be arranged to lock at least one or both of the longitudinal seat adjustment mechanism and the tilt adjustment devices.

Abstract: A dental chair having a support frame, a seat with a seat frame, a back rest pivotally connected to the seat and a displacement device for moving the seat frame on the support frame with tilting of the seat and an arrangement for controlling the inclination of the back rest, characterized by the pivotal connection between the seat comprising a separate pivoting bearing on each side having a pivot axis approximately in the area of the hip joint of a person sitting in the chair and the arrangement for controlling the inclination of the back rest comprising a one-piece member having two lever arms being pivotally connected on the side of the seat frame with one of the lever arms having a roller riding on the track on the support frame and the other lever arm being connected to a projection of a part of the pivoting bearing which is attached to the seat rest so that as the seat frame is moved between positions, the roller moving on the track enables the back to change its degree of inclination to the seat.

Abstract: A translating rudder pedal system which includes a rudder pedal assembly and a reclinable, translationally movable, seat operably connected to the pedal assembly, with both the pedal assembly and the seat mounted in a vehicle, such as an aircraft. The system ensures that, irrespective of the movement and positioning of the seat, the feet of the user seated in the seat always remain in contact with the control pedals of the rudder pedal assembly.

Abstract: An enclosed seating structure comprises a plurality of trapezoidal faces forming an enclosure. The enclosure has a small horizontal base, a widened midsection and a small ceiling. The enclosure defines an opening extending substantially from the base to the ceiling. A seat is pivotally mounted on an axle that is secured across the opening. The seat extends through said opening. Automatic means position the seat in one position substantially blocking the opening, in a reclining position being substantially horizontal and in positions therebetween.

Abstract: This invention relates to a vehicle seat slide support system and is particularly concerned with a seat slide arrangement which enables a variety of adjustments to be made to the position of a seat and its configuration within a vehicle. A feature of the invention lies in the provision of an arrangement in which common parts may be used in the manually adjusted and motorized form of the seat support. In one aspect the present invention provides a slide assembly for a vehicle seat comprising a first slide member (26) arranged to support or form part of the seat squab structure co-operating with a further slide member (25) arranged to be mounted on the floor of the vehicle. In an adaptation the further slide member is provided at the front and/or rear ends with mounting means (28) by which it may be mounted on the vehicle floor and adjusted in height relative to the vehicle door.

Abstract: An automatic seat positioning device for a vehicle driver's seat wherein a reversible motor is engaged with one of electromagnetic clutches and rotates so that an associated seat member actuating mechanism moves one of the seat members to a desired position for a specific driver from an initial position upto a maximum movable end.

Abstract: A rotary wheel with a peripheral recess rotates with the adjusting movement of a motor-driven, adjustably movable seat. A manual lever is operable to freely rotate the wheel relative to the seat to an angular rest position, where a contact element of a memory switch engages in the recess of the wheel. When the seat moves back to the initial position after an adjusting movement, the contact element snaps into the recess to open the switch stopping the motor so that the seat automatically resumes the initial position.

Abstract: A lift chair for a disabled person has a seat comprising a stationary horizontal rear seat portion and a rotatable front seat portion to support a person in seated position. The rotatable front seat portion is rotated between a horizontal position and an elevated position by a drive means including an electrically driven motor. The rotatable seat portion may carry a seat pad which overlays the rear seat portion. The chair may have a fixed or movable back. The movable back may carry a back pad and may be operatively connected by frame members to the drive means to rotate upwardly when the front seat portion rotates upwardly and forwardly. An assembly may be provided for adjustably elevating the seat to accommodate persons of different heights. A sling is provided between the back and the front seat portion to close the space defined therebetween when they are rotated upwardly.

Abstract: A power seat track apparatus for selectively positioning an automotive vehicle seat. The apparatus is adapted to be powered by 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 back torsion tubes or bars act on only the seat pan and seat cushion but not 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 back cushion seat mounting is designed to withstand shock loading by its mounting on the upper seat track separate from the seat pan and cushion elevating mechanism.

Abstract: The specification discloses improvements in a mechanized wheelchair in which the seat, back and leg members are so linked and articulated on a body frame as to enable the occupant to assume any one of three positions, namely sitting, standing or reclining. By movably mounting the body frame on a base frame the height may also be controlled in conjunction with the above positions. A drive means is also provided and the use of electrical operational means and an improved structural design make this invention safer and more versatile than any disclosed in the art.

Abstract: An integrated ambulator and wheelchair is provided to enable a paraplegic stand on the ambulator and be separated from the wheelchair for maneuvering in confined spaces. The ambulator has power operated articulated linkage for raising the paraplegic out of and free of the wheelchair to the standing position on the ambulator; the compact base of the ambulator containing a drive mechanism for moving the ambulator in any desired direction through controls conveniently located on an arm rest.

Abstract: In a motorized reclining chair including a chair frame having arms the improvement comprising the unique mounting of a movable back and seat portion, an ottoman and a headrest thereon, whereby totally independent adjustment of those elements may be accomplished within predetermined limits by the user. Movement of the elements of the improved reclining chair is accomplished by selectively actuating any combination of three electric motors provided for this purpose. By virtue of this construction the user of the chair may repose in any of a great variety of positions varying from a substantially erect, seated position to a fully reclined, substantially supine position.

Abstract: For adjusting the height and inclination of the sitting portion of a seat with respect to the base of this seat, two mechanisms are provided placed respectively between these two sub-assemblies, at the front and at the rear of the seat.Each mechanism comprises, on each side of the seat, two horizontal bearing surfaces integral with the base, a horizontal shaft connected vertically to the sitting portion and pivotably mounted thereon, two flat Archimedes-spiral cams in opposite directions integral with the shaft and placed jointingly between the bearing surfaces, and electric means for causing said shaft to rotate, these means allowing the shaft of the front mechanism, that of the rear mechanism or both at the same time to be rotated at will.

Abstract: A solar lounger is disclosed which rotates in response to energization from the sun's rays. The solar lounger has a chaise type chair which is rotatably supported on a base. Photovoltaic solar cells are mounted on said chair and generate electrical energy in response to the sun's rays. Said electrical energy is used to power a drive motor which causes said chair to rotate relative to said base.

Abstract: This disclosure relates to a control device of transmitting an ultrasonic pulse from an ultrasonic transmitter to an ultrasonic receiver by disposing the transmitter and the receiver between two movable members which are placed in a variable relation in linear distance with each other, converting aerial propagation time of the pulse from the transmitter to the receiver into an electrical means, memorizing and holding a distance between the two members by the electrical means, and reading the memorized distance at any desired time and reproducing the distance. The disclosure also relates to a control device using the system.

Abstract: The invention concerns a hinged recliner for seats with adjustable seat backs, especially automobile seats, where a fixed hinge part attached to the seat, and a swingable hinge part attached to the seat back are connected via an axis of rotation, and where an adjustment and locking device, designed on a taumel gear principle, determines the position of both hinge parts to each other and the eccenter of the taumel gear system is connected to a power device through the mediation of a reduction gear by means of a flexible shaft.

Abstract: There is disclosed a motorized reclining chair. All motions are controlled by a single reversible motor, the cost of the motor being offset by the relatively low cost of the linkages which are employed. The chair offers numerous advantages, including: (1) leg-rest motion takes place without set/back motion until the leg rest is raised to an intermediate position, following which the leg rest and seat move together, (2) three-way operation, in which the back tilts relative to the seat, can be provided at minimum additional cost, simply by pivoting the back to the seat and adding a single link on each side of the chair, and (3) in moving to the fully reclined position, the entire seat rises, with the front edge rising more than the rear edge, as contrasted with prior art reclining chairs in which the rear of the seat drops down. The motive force is provided by an upwardly thrusting shaft controlled by the motor.

Abstract: A dental chair lift mechanism employing a parallelogram lift has a linkage arrangement which offsets the horizontal component of motion produced by the parallelogram lift so that the seat of the dental chair can be elevated in a substantially straight vertical path.

Abstract: A seat reclining device of a vehicle is provided with a position memory function. The device includes a position memory wheel having an integrally formed reset cam and a reset lever engaging therewith. The reset lever is urged onto the periphery of the reset cam of the position memory wheel by spring force and normally contacts therewith at least two points.

Abstract: A power operated reclining wheelchair having a frame assembly with a base frame and a pair of laterally spaced sidewall frames extending upwardly from the opposite lateral sides of the base frame. Each of the sidewall frames have a fixed major pivot point located adjacent its rear end at a location approximating that of the hip joint of the occupant of the wheelchair. The wheelchair also has a back rest assembly and a seat assembly and mechanical and electrical structure for pivotally reclining the back rest assembly about the major pivot points in coordinated movement with the seat assembly during which the front end of the seat assembly is tilted upwardly and forwardly advanced from its initial position while its rear end is slightly lowered and forwardly advanced from its initial position.

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 position memory device to be used for the power driven seat of a vehicle. The device comprises a memory wheel and memory switches to be engaged with the memory wheel at a selected position of the seat. Return to the selected position is identified by the re-engagement of the switches against the memory wheel at the memorized position and where the current supply circuit to the driving motor is interrupted.

Abstract: The adjustable seat having a plurality of position adjusters, such as a backrest adjuster, a front vertical adjuster, a rear vertical adjuster, and a longitudinal-horizontal adjuster includes a common driving motor which is coupled to individual adjusters by means of a power distributing gear unit including a plurality of driving shafts supporting for free rotation meshing gears which are in permanent engagement with a driving pinion of the driving motor. Each of the driving shafts also supports for joint rotation axially movable coupling discs which are normally disengaged from the assigned gears. The gear unit includes a control unit assembled of a plurality of mechanical control devices, each including cam surfaces linked to the coupling discs and being conservatively activated by a sliding member driven by an additional adjustment motor. The sliding member also controls an indication circuit which indicates the individual operative position of respective driving shafts.