Abstract: A head rest adjusting device using a friction mechanism, which permits the forward and backward rotative adjustment of the head rest relative to a head rest stay. The friction mechanism comprises a substantially U-shaped leaf spring receiving the head rest stay therein, and a protruding resilient section is formed on the folded area of the leaf spring so as to give an additional resiliency to the leaf spring per se and thus provide a stable proper friction against the rotation of the head rest about the stay.

Abstract: A rear headrest adjusting arrangement in a motor vehicle has a headrest pivot bearing unit that is fixed at the seat and at which two head pad holding devices are disposed that are spaced away from one another in the direction of the pivotal axis. A pivot bearing shaft is provided that has two connecting parts for the holding devices, the connecting parts being spaced away from one another and being connected with the pivot bearing shaft in a torsionally fixed way. A driving motor is provided adjacent to the pivot bearing shaft, the driving motor having a motor shaft that with respect to its axis is parallel to the pivot bearing shaft and having a gearbox that connects the motor shaft with the pivot bearing shaft. This provides the possibility of a motor-driven headrest adjusting arrangement with little installation space for the pivot bearing unit.

Abstract: An adjustable head rest device for a vehicle seat comprises a head rest body for supporting the head of an occupant of the seat. The device further includes an adjusting member for adjusting the position of the head rest body with respect to the seat continuously within a defined range of movement.

Abstract: A foldable headrest (2, 3) for, preferably, the rear seat of a passenger car, of the type mounted for pivoting movement on the backrest (1), is in the form of a multi-piece assembly and includes at least one height-adjustable support element (12, 13) between upper and lower headrest members (8, 9, 10, 11). The headrest (2, 3) is designed to permit a wide range of adjustments, including adjustment of its angular position through pivoting movement, as well as height adjustment of headrest members, and is therefore suitable to accommodate, in a relatively simple manner, a great variety of seat occupants.

Abstract: A device for moving up and down and tilting a headrest of a vehicle seat having a driven shaft for moving the headrest up and down and a support member for tilting the headrest. The drive shaft is operatively connected to leg members fixed to the headrest, and provided in a backrest of the vehicle seat. The support member is provided below the driven shaft. A drive mechanism drives the driven shaft to move the headrest up and down relative to the backrest, and a tilting mechanism rotates the leg members about the support member to tilt the headrest to a back of the seat backrest.

Abstract: A device for adjusting the elevational position of a head rest of a seat for a vehicle having a stay formed with a plurality of grooves along an elevational direction and stood on a seat back of the seat, and a locking mechanism mounted in the shell of the head rest for engaging or disengaging the grooves of the stay by means of the lateral movements of the head rest comprising said stay having right and left vertical rods integrally coupled at the upper poritons thereof with the stay, a bracket member provided in the shell and coupled with the two vertical rods of the stay through two cylindrical supporting members inserted therethrough with the two vertical rods of the stay, a rod penetrated laterally through the shell and the bracket member to be secured to the shell but movably engaged with the bracket member in such a manner that the shell is urged to either leftward or rightward with respect to the bracket member with a gap formed at one side thereof, the grooves are formed at least one vertical rod of

Abstract: A variable-height and variable-slant head rest with a center window, for motor vehicles comprising two mounting rods adapted to be attached by their one ends to the back rest of a motor vehicle seat and a support frame embedded in a cushion body and adapted to be shifted along the mounting rods and to be pivoted in relation to the mounting rods and having hollow side struts receiving the other ends of the mounting rods. The support frame is pivotally supported on two circular disks running on the one ends of the mounting rods. The disks are each arranged in a cylindrical socket of corresponding diameter formed by a widened portion of a slot-like cavity on both side struts of the support frame. Each cavity has a width substantially equal to the diameter of its respective mounting rod and abutment surfaces for the mounting rod which diverge in a direction away from the socket. The disks each have a diametral hole through which the respective mounting rod extends.

Abstract: A head restraint for a vehicle seat is disclosed. The restraint comprises a support member for insertion into the vehicle seat and a shock absorbing assembly secured to the upper end of the support member and which comprises a wire lattice form having vertical and horizontal members defining the height, width and depth of said assembly and being welded to the support member at points of contact therewith. An elesticized foam padding is positioned over the lattice form.

Abstract: A headrest apparatus for vehicles comprising a pair of guide rails connected on a seatback frame and a pair of stays connected to the headrest. A pair of shoes are positioned for movement along the guide rails with each of the shoes supporting a separate one of the stays. A rod member which is connected at its ends to the pair of shoes, and means for moving the rod in an upward and downward direction are provided. The upward and downward movement of the rod moves the shoes in their respective guiderails to raise and lower the headrest. A cam member is attached at an upper portion of each said guide rail for urging the shoes along a selected path and the headrest to an inclined position.

Abstract: A head rest unit for use in a vehicle seat includes a head rest stay, a main frame pivotally fixed to the head rest stay, and an auxiliary frame pivotally fixed to the front outer surface of the main frame. A linking mechanism is arranged between the main frame and auxiliary frame so as to permit the auxiliary frame to pivot away from the main frame and towards the occupant's head when the head rest is inclined.

Abstract: A headrest apparatus comprising at least one support member mounted on a seat, a high cushioning elastic base provided on said support member, a low cushioning elastic support wall provided on said elastic base, an empty room formed in front of said elastic support wall, a head resting part formed at the front side of this empty room and a gel material layer formed by filling said empty room with gel material, wherein a load to be applied to said head resting part is applied to said gel material layer.

Abstract: The present invention provides an apparatus and method of utilization of the same of a vehicle seat headrest with an adjustable tilt provided by a pneumatic bladder captured between a headrest frame and a pivotally attached cushion support. In an alternative embodiment of the present invention the present invention provides an artificially powered headrest also adjustable in a generally horizontal plane.

Abstract: A reclining chair (10) having a seat (12), backrest (14), side supports (16) and a reclining mechanism which includes a backrest bracket (34) rigidly affixed to the backrest (14) and pivotably mounted to a side support bracket (18), the side support bracket (18) being rigidly affixed to a side support (16). A seat support bracket (30) is rigidly affixed to the seat (12) and pivotably mounted to a side support bracket (18). A coupler link (40) has one end pivotably connected to the backrest bracket (34) and a second end pivotably connected to the seat support bracket (30). The axis of rotation of the backrest (14) is located so as to pass approximately through the hips of a chair occupant. Further, the linkages are so selected and arranged that the reclining motion and return motion take place by a horizontal translation of the center of gravity of the occupant to minimize the effort required to operate the reclining mechanism through its range of movement.

Abstract: The headrest for a rear seat is fastened to two rods which are adapted for sliding movement in guide sleeves mounted in the backrest of a motor vehicle. The rods are comprised of an upper rod portion and a lower rod portion which are interconnected by a pivot joint. Upon actuation of a push button, the rods are urged by a lift mechanism out of the guide sleeve into a position where the pivot joints are unlocked and wherein the headrest together with the upper rod portion is folded down into a storage position so as to afford the drive of the vehicle an unobstructed view to the rear.

Abstract: A headrest for an automotive vehicle seat is disclosed including a headrest frame including a lower portion extending along an upper exterior portion of the seatback and mounted to a mounting frame for generally pivotable forward and rearward movement. A first track provides for the forward and rearward movement and a bladder mounted between the mounted frame and headrest frame selectively expands and contracts to move the headrest frame along the track. The mounting frame is provided with a elongated portion extending into the interior of the seatback and includes a linear gear operated by a reversible motor driven gear for selectively vertically extending and retracting the headrest.

Abstract: The headrest comprises on one side a sector (24) fixed to the support for mounting the headrest on the seat, and a movable sector (30) connected to the framework (12) carrying a cushion. A link (10) is pivotally mounted at its ends on pivot pins (22, 28) extending through these sectors, and a spring wire fixed to the pivot pin (22) of the fixed sector and connected to a control knob which is axially movable, slides in the slot of the pivot pin (28) of the movable sector between a position in which it is engaged in the facing notches of the two sectors for locking the headrest and a position in which it is disengaged from these notches for releasing the headrest.

Abstract: A head restraint for use on the backrest of a seat for an automotive vehicle has a post that fits into the backrest and a bracket attached firmly to the upper end of the post. The bracket at its ends carries trunnions, each of which is encircled by a split bushing having radially directed lugs that are separated at the split in the bushing. The bushings, which are otherwise generally cylindrical, fit into arcuate seats on end members, and the end members are in turn attached to and rigidify a metal can or core that forms part of a cushion that is located behind the head of the occupant of the seat. The cushion pivots forwardly and rearwardly on the trunnions between a generally upright position, where is serves merely as a head restraint, and a forwardly inclined position, where it may be used as a head rest. Each end member also has a clamp provided with clamping elements which bear against the sides of the lugs for the bushing in that end member.

Abstract: A sunbather's aid is disclosed herein for supporting the head of the user which includes a stationary base having a universal joint movably carrying a headrest platform. The platform is characterized as an oval-shaped headrest with a cushioned surface and having a sinusoidal curve in side elevation to conform to the general shape of the head and neck of the user. The aid is readily disassembled from an operable configuration to a storage configuration. The base is adapted for mounting on the back of a chair or for placement on a supporting surface.

Abstract: A removable seat for a truck bed. The seat has front and back lateral runners, the front runner being the higher. The runners are telescopic in construction. Four attachments, two for each runner, are attached to the truck bed, and the runners are held to the truck bed by them. A flexible seat member has a slack length and extends between the runners. It forms a cavity to receive an occupant. A pair of flexible inelastic side panels are attached to the seat member, and a pair of side bands of flexible inelastic material having a shorter length than the slack length are supported by and extend between the runners. Together, the panels with bands make a side restraint and arm rest. A cushion is pivotally attached to the sheet adjacent to the higher runner, so it can be pivoted to protect an occupant from striking that runner. The attachments are preferably sockets to receive laterally extending tongues that are carried by the runners.

Abstract: An upwardly and downward adjustable headrest assembly for the seat backrest of a vehicle includes a fixed stay upstanding from the seat backrest, guide shoes slidable up and down along the stay and carrying a headrest body, and a locking mechanism disposed between one guide shoe and the stay for locking the guide shoe to the stay at any position therealong. The interior of the headrest provides the space needed to receive the stay as the headrest is moved up and down along the stay via the guide shoes, thereby allowing the headrest assembly to be installed on the backrest without increasing the thickness of the backrest.

Abstract: A position adjustable see-through headrest comprises a lower frame shaft which extends across parallel headrest stays extending from a seatback, a pivotal reversed U-shaped structure pivotally connected to the lower frame shaft so as to be pivotal about the axis of the lower frame shaft, a position adjusting mechanism arranged between the pivotal reversed U-shaped structure and the lower frame shaft in a manner to lock the pivotal reversed U-shaped structure to a selected one of the angular positions relative to the fixed lower frame shaft, a cover member covering the mechanism so as to conceal the same from the exterior of the cover member without affecting the function of the mechanism, and a pad member covering substantially entire of a unit which includes the lower frame shaft, the pivotal reversed U-shaped structure and the position adjusting mechanism.

Abstract: Herein disclosed is an angular position adjustable headrest which comprises a headrest frame. The headrest frame is arranged to pivot between two extreme positions about the axis of a pivot shaft which extends between two spaced brackets secured to a stay of the headrest. A position locking device is arranged to lock the headrest frame to selected one of angular positions of the headrest frame relative to the brackets. A lock cancelling plate is pivotally disposed about the pivot shaft, which disables the position locking device when the headrest frame is pivoted to one of the two extreme positions.

Abstract: In a head support assembly comprising a head support member carried on a mounting bar member in such a way as to be adjustable in respect of height and/or inclination thereon, the mounting bar member carries at least one annular flexible element co-operating with portions of the head support member and in frictional engagement relationship with the mounting bar member and/or the portions of the head support member.

Abstract: The invention relates to a seat with a headrest adjustable in height and in slope for which the framework (2) of the headrest (1) is mounted on that (8) of the seat back (9) of the seat by two parallel pins (4, 5) fixed to this framework of the headrest and adapted for sliding vertically in complementary housings (6, 7) fixed to the framework of the seat back. The framework of the headrest is mounted for pivoting about respectively two transverse horizontal axes (bars 11 and 13) offset longitudinally with respect to each other and connected respectively to the two pins (4, 5) and means operable by the person sitting in the seat are provided for controlling at will either the simultaneous and identical vertical sliding of the two pins or the vertical sliding of one only of these two pins.

Abstract: An automobile seat includes a head rest for use by an adult which can be converted to an infant seat by pivoting a portion of the back rest forwardly and extending the infant or child seat from a storage compartment, and lowering the head rest which can be locked or secured to the child seat to serve as a restraint for the child. The child seat, which is pivotally mounted between its retracted and extended positions, is locked in each of said positions to provide security and reliability in both modes of operation or use.

Abstract: A headrest for seats for use in vehicles has a fixed frame fixedly secured to the upper ends of stays supported on a seat back, two right and left movable frames secured to a panel of the headrest, and two pairs of parallel links connecting the fixed and movable frames; a first pair connecting the right movable frame to the right end portion of the fixed frame, and a second pair connecting the left movable frame to the left end portion of the fixed frame. One of the first pair of links is connected with one of the second pair via a connecting portion. With such structure, the headrest can be moved back and forth with little change in height, and, since there are no moving parts present in all portions of the headrest except in the two end portions of the fixed frame, a throughbore can be provided in the central portion of the headrest.

Abstract: This head-rest comprises two semi-cases (1 and 2) which are pivoted together in their upper part (at 4). The front semi-case (1) carries a frame (12) for a padding cushion. The rear semi-case (2) is pivotally mounted in a fixed mount (14-18) rigid with two fixing tubes 20 in sleeves (56) mounted on the seat. One of the tubes (20) carries a screw-and-nut system (28-30) connected to the front lower end of the rear semi-case and controlling the adjustment in height of the bearing point of the head of the user, while the other tube (20) carries a screw-and-nut system connected to the upper part of the rear semi-case 1 for adjusting the forward and rearward setting position of the support point of the head of the user.

Abstract: A seat for vehicles such as automobiles etc., wherein a seatback is splitted into an upper part and a lower part and each of these splitted upper and lower parts is equipped with a respective reclining device. An intermediate releasing device which reclines the upper part is mounted on the opposite side in relation to the reclining device of the lower part and a lock release lever of the intermediate reclining device is also mounted on the opposite side in relation to the reclining device of the lower part.

Abstract: A head-rest is disclosed in which the lower ends of the stays are fixed to a seat frame of a seat back and a head-rest body is mounted to these stays in a manner that it is free to move in a vertical direction so as to provide a deeper recessed cavity in the rear of the seat back.

Abstract: A headrest includes a unidirectional clutch permitting adjustment of the headrest from a reference position to any desired selected position and resists motion in a rearward direction except upon release of the clutch. In one embodiment of the invention, a spring return mechanism is provided to automatically return the headrest to a reference position upon release of the clutch.

Abstract: A head restraint for a vehicle, which is supported by at least one bearing arm on a protrusion, which is arranged between the backrest and a hollow in the rear window shelf with a downward extension in the transverse direction of the vehicle, the hollow serving to receive the head restraint in its stowage position, a bracket is fixed on the underside of the protrusion for the absorption of high forces and to provide protected and elegant accommodation, a web-like middle region of which bracket receives a catch and the shaft of a pawl which interacts with the catch. The pawl is releasable via an actuating device, and the shaft serves as a bearing for at least one of the two bearing elements, connected to each other by means of a rod, for the bearing arms, the rod engaging and locking in the catch when the head restraint is transferred into the position for use.

Abstract: A head-rest for a vehicle seat is disclosed which is mounted to a seat back frame in such a manner as to be free to rotate longitudinally of the vehicle. Support members for supporting the head-rest and a lock plate formed with a large number of locking grooves are fixed to a shaft of rotation provided between two brackets. The lock plate is rotated with the longitudinal movement of the head-rest and a stopper provided in the bracket is engaged into one of the locking grooves in the lock plate so that the head-rest is locked in its desired position.

Abstract: A driving seat for use in an industrial vehicle such as a forklift, tractor and combine is disclosed. The driving seat comprises a seat back which is divided into two portions, i.e., upper and lower portions such that the upper portion can be folded backwards relative to the lower portion so as to lower the height of the seat back. The upper portion of the seat back is connected with the lower portion of the seat back by means of a rotary support device which is capable of performing such folding operation of the upper portion of the seat back by simply pressing against the upper portion itself.

Abstract: An angle adjustment device is disclosed in which the angle of inclination of a headrest or thigh support can be adjusted by rotating a movable body itself forming a part of the headrest or thigh support. When the movable body is rotated, sectors fixed to the movable body are rotated together with the movable body and are engaged with a stopper rod secured to a bracket. Thus, the sectors are locked in a desired position, that is, the angle of the movable body is adjusted. When the movable body is rotated beyond a predetermined angle of rotation, the sectors are disengaged out of the stopper rod and the movable body is rotated in an opposite direction so as to return to its initial position.

Abstract: A head rest attachment is provided for tubular frame lawn or patio furniture. The head rest attachment includes a curved head support surface, and a resilient adjustable clamp for attaching the supporting surface to the top of the back tubular member of the lawn or patio furniture so that a head supporting force is created along a line between the centers of the supporting surface and the tubular member. For added comfort the head support surface may be padded. Further, the head support surface may be concave and extend upwardly and laterally to provide lateral support and to prevent a person's head from rolling to the side, if the user should doze off.

Abstract: A headrest in passenger cars which is pivotable from its foremost position, required for performing its safety function, into at least one rearward position, from which latter position the headrest can be pivoted automatically back into the foremost position under the force of inertia acting on the headrest in case of strong deceleration of the automotive vehicle and can be locked into such foremost position, so that the headrest, even if pivoted into the rearward position to enhance the occupant's comfort, is, in case of necessity, automatically ready in the foremost position to fulfill its safety function. In connection with a headrest at the rear vehicle seat, such headrest can additionally or alternatively be pivoted onto the hat shelf underneath the rear window of the vehicle so that, when the rear vehicle seat is unoccupied, the driver's unobstructed field of vision via the inside rearview mirror toward the rear is not impaired.

Abstract: An armchair is formed of four frame elements joined together. The central frame, comprising the seat, is hinged to the rear frame, which forms the back, at the top of which sits a head rest divided into two independent parts able to assume two secure positions, upright or turned back. The central frame is linked at the front with a lower frame that serves as a base when the chair is closed and as a footrest when turned up in front to convert the chair into a chaise longue.

Abstract: A powered articulated headrest system for use with a seat structure having a backrest, such as the ejection seat of a high performance aircraft, e.g., a combat aircraft. The headrest system includes: a headrest assembly which is movably connected to the backrest; and, an electro-hydraulic actuator assembly for moving the headrest from an original (and normal) position above the backrest to any one of an infinite variety of positions which are rearward and downward of the headrest, and for moving the headrest from these other positions to the original position. The actuator assembly is controlled by the occupant of the seat, e.g., the pilot of the aircraft.

Abstract: A wheelchair carrying vehicle comprising a head rest assembly which comprises a head rest support frame which is rockable about a pivotal axis fixed with respect to the vehicle body structure and located adjacent the roof panel of the body structure and which is lengthwise extensible toward and collapsible away from the aforesaid axis, at least one head rest member supported on the head rest support frame, the support frame being rockable about the aforesaid axis between a position having the head rest member located close to the roof panel and a position having the head rest member positioned adjacent the head portion of an occupant of the wheelchair carrying vehicle, a lock-unlock unit comprising a lock control lever rockable about the aforesaid pivotal axis and securely connected to the head rest support frame, the lock-unlock unit being operable for having the lock control lever selectively locked to and unlocked from the vehicle body structure.

Abstract: A bath tub head rest is provided with a mounting support that allows it to pivot in an up-and-down direction and to rotate to provide maximum comfort and use. The head rest is supported on the bottom of the bath tub by a suction cup and is mounted to a wall by brackets. The head rest is rotatable by a post telescopingly mounted in a column having the brackets and suction supported by it, while the swivelling up-and-down movement is provided by a tongue connected to the head rest and received in a channel at the top of the post.

Abstract: A dental chair headrest which may be positioned and locked in a predetermined angular orientation relative to the seat back. A support base allows height adjustment and has a headrest frame pivotally connected thereto. The locking mechanism includes a locking shaft pivotally connected to the support base and extending through a bore within a locking block pivotally connected to the headrest frame. Alignment of the locking shaft and bore allows the adjustment of the headrest angle, and pivoting the locking block engages the edges of the bore with the surface of the locking shaft to retain the locking shaft in a predetermined position within the bore. The headrest is covered by a resilient material, and a positioning lever extends from the locking block to a location where the positioning lever may be actuated by pressure on the resilient material to disengage the locking block from the locking shaft.

Abstract: A device for fastening a first member such as a head rest relative to a second member such as a head rest supporting member in an inclining adjustable manner, including a one-way ratchet and pawl mechanism incorporated between the two relatively rotatable members, wherein the pawl is driven out of engagement with the ratchets when the two relatively rotatable members have been brought to an extreme relative position allowed by one-way sliding engagement of the ratchets and the pawl, and a control member which catches and holds the driven up pawl at the extreme relative rotational position and releases the pawl when the two relatively rotational members have been brought to the other extreme relative rotational position so as to make the pawl again engage the ratchets at the second mentioned relative rotational position.

Abstract: A headrest control device for a treatment chair in which the headrest contains a linkage capable of raising and lowering a head supporting portion of the headrest in synchronized interlocking relationship with the tilting of the headrest. The device facilitates the bringing of the head supporting portion into firm contact with the rear neck region of the patient thereby making it possible for him to open his mouth in a natural posture when he undergoes oral treatment with the backrest of the treatment chair being held approximately horizontal and the headrest being slightly forwardly tilted.

Abstract: A headrest for vehicles which includes a stay, a bracket fixed to the headrest, a fixed link pivotally supported by the stay at one end thereof and pivotally supporting the bracket at other end thereof, an elongated hole provided in the bracket so as to guide the stay and to move the bracket, a pawl lever provided with a pawl portion, and a latch hole provided on the bracket whereby the inclination of the bracket is regulated by engaging the pawl portion of the pawl lever with the latch hole.

Abstract: An adjustable headrest for a dental chair having one lock for holding the headrest at an articulated position and a second lock for holding the headrest at an adjusted longitudinal position with respect to the backrest of the chair. The invention is a one hand operated lock release for operating both locks. The release can be constructed so that manipulation of a single member can accomplish sequential, independent or simultaneous operation of both locks.

Abstract: A seat, in particular for a tractor, has a shoulder support mounted at the upper end of a backrest of the seat on a hinge device. The hinge device, when locked, holds the shoulder support in an upright position but, when released, allows the shoulder support to be tilted downwardly to a horizontal position to support an arm and shoulder of the seat occupant when plowing or reversing the tractor.

Abstract: An articulating headrest for a dental chair having a unidirectional locking means is described. The locking means comprises a locking plate engageable with a pivotable shaft connected to a headrest support means. The locking means is adapted to one-handed operation by an operator and permits unhindered forward rotational movement of the headrest about the support means in order to prevent accidental jamming of the headrest against an object during downward movement of the dental chair.

Abstract: A device for forwardly and rearwardly adjusting the position of a safety headrest or pillow relative to the backrest of a vehicle seat, the headrest including a base member supported on the backrest and a frame member pivotally provided on the base member and covered by an outer cover for receiving and protecting the seat-occupant's head from shock to the vehicle. The device includes linkage pivotally interconnected between the base and frame member for permitting a link motion of the frame member relative to the base member in the forward and rearward directions, and a mechanism operable between the frame and base members for positioning and locking the frame member in a desired position on the path of the link motion thereof relative to the base member.

Abstract: This disclosure relates to a device for controlling tilting of headrest of treatment table such as for treating the teeth, eyes, nose and the like. The device makes it possible for an operator to tilt the headrest efficiently by such very simple manipulation as to enable backward and rearward tilting of the headrest by pushing in a support shaft in one direction which is transversely incorporated into a headrest carrier or a backrest carrier and to retain the headrest in a desired position by releasing the pushing force of the support shaft in the position.

Abstract: There is disclosed an improved head support for vehicle seats with a padded support member which forms a hollow space, a holder including at least one bar-shaped support which extends from below into the inside of the padded support member, a connecting body which connects the padded support member with the holder so that the padded support member can be swiveled around a transverse axis and can be vertically adjusted along the longitudinal axis of, and relative to the holder, as well as a notched device which holds the padded support member at the selected height by means of a friction or force fit.