Abstract: A chair has both a tiltable seat and a tiltable backrest mounted on a backrest support. The chair includes a pedestal mounted on a bottom of the tiltable seat. An eccentric disk is seated in the pedestal so as to be movable therein. A rod eccentrically penetrates the eccentric disk via a prismatically-shaped cross-section recess through the eccentric disk so that the rod is not movable with respect to the eccentric disk. A handle is connected on an outer end of the rod for use in turning the rod together with the eccentric disk. An arm is mounted on the backrest support of the tiltable backrest, wherein the rod is seated in the arm in a movable manner.

Abstract: A passenger seat including a seat base for being mounted on a support surface. A seat frame is carried by the seat base, and includes a seat bottom frame member and a seat back frame member is positioned in a fixed angular relation to each other and the seat base. A seat bottom pan is positioned on the seat bottom frame member. A seat back pan is positioned on the seat back frame member. Guide means cooperate with the bottom pan and bottom frame members and the back pan and back frame members, respectively, for unison translational movement of the back pan and the bottom pan between an upright position when the bottom pan is in the aft position and a recline position when the bottom pan is in the forward position.

Abstract: The adjustment mechanism contains a pneumatic spring that is placed vertically in the underframe, for adjusting height, and a pneumatic spring that is linked to the seat support at one end and the back-rest at the other, for synchronized adjustment of the angle. The pivotable back-rest and the fixed seat support are coupled with each other on the main rotational axis in two hinge connections. The main rotational axis runs above and crosswise over the seat plate. The seat plate has guide cranks on its underside, the supporting arms of the seat support engaging is said guide cranks in such a way that they can slide crosswise to the main rotational axis. The front bearing pegs of the supporting arms engage in the guide cranks. The seat plate is coupled together with the inclination spring on the moving rotational axis on the back-rest. The invention also relates to a back cover with a variably positionable lumbar reinforcement insert and height-adjustable armrests.

Abstract: A chair has two independent body supports which move in opposite rotation and elevation to one another to change from a chair configuration, one support higher than the other, to a spine tensioning apparatus, supports near equal in elevation. Preferably body supports are spaced apart from one another such that the only interconnecting human link between the two supports, when in a near equal elevation configuration, is the human spine. The spine, in this configuration is then subjected to similar forces as a simple beam supported by two separate forces, tension, compression, shear and moment.

Abstract: A synchrotilt chair includes a base, a back, a seat, and a link(s) pivoted to a rear of the base and to a bottom of the back to form a four-bar linkage arrangement. A spring arrangement includes a resilient member at one of the joints of each link to bias the link and in turn the back and seat toward an upright position, with the back and seat pivoting with a synchronous motion upon recline of the back. In one form, the chairs are nestable and stackable for dense storage. In another form, the chairs are desk-type pedestal chairs. Several of the structural support members of the chair are gas-assisted injection molding to form a hollow tubular shape that is lightweight, strong, and dimensionally-accurate. Armrests are pivoted to the back and have a shape configured to allow nested stacking while also providing excellent comfort, durability, and style. Also, the armrests are movable to remote storage positions to provide unobstructed side access to the seat of the chair.

Abstract: A chair includes an actuator having an actuator button disposed on top, a base secured on the actuator, a spring engaged in the base and having an actuator arm engaged on the actuator button for actuating the actuator button to release the actuator. A barrel is rotatably secured to the base. A bar is pivotally and adjustably secured to the base and adjustable relative to the base at any selected angular position. A latch is slidably engaged in the base and selectively engaged with the bar for adjustably securing the bar and the seat cushion to the base.

Abstract: A seating structure includes a support assembly for supporting the body of a user. The support assembly includes a frame member defining an opening and having a channel formed around at least a portion of a perimeter of the opening and an expandable carrier member expandable between at least a first and second configuration. The carrier member is inserted into the channel when expanded to the second configuration. A membrane of elastic material covers the central opening. The membrane has an edge, at least a portion of which is attached to the carrier member. The membrane is stretched a desired amount as the carrier member is expanded between the first and second configurations. A method of assembling a seating structure is also provided.

Abstract: A seating structure includes a support structure, a seat supported by the support structure and a backrest pivotally connected to the support structure. The seat includes a front and rear. The backrest is positioned adjacent the rear of the seat. The backrest includes a frame having a pair of bow-shaped side members. Each of the side members has a lower section and an upper section. The upper sections extend from the lower sections so as to form a pair of first bowed sections at substantially a lumbar region of the backrest. A flexible membrane is attached to and extends between the side members. The flexible membrane has a second bowed section corresponding to the first bowed sections of the side members. A method of using the seating structure is also provided.

Abstract: A synchrotilt chair includes a base, a back, a seat, and a link(s) pivoted to a rear of the base and to a bottom of the back to form a four-bar linkage arrangement. In one form, the chairs are nestable and stackable for dense storage. In another form, the chairs are desk-type pedestal chairs. Several of the structural support members of the chair are gas-assisted injection molding to form a hollow tubular perimeter frame that is lightweight, strong, and dimensionally-accurate A flexible panel is integrally molded between opposing sides of the perimeter frame. Armrests are pivoted to the back and have a shape configured to allow nested stacking while also providing excellent comfort, durability, and style. Also, the armrests are movable to remote storage positions to provide unobstructed side access to the seat of the chair.

Abstract: The adjustment of the angular setting is provided between the parts (R, S, F) in a reclining or sealing article of furniture, which has two or more mutually adjustable, articulated parts which together form the frame of the article, and where the frame is mounted in a support member (A) by of transverse axes or axis journals (2, 3, 5), the back member's (R) axis (2) is securely mounted in a pivot bearing (11). The axes (3, 5) of the remaining part(s) (s/ or S and F respectively) are movably mounted in the support member's longitudinal direction. The back member's (R) axis (2) is mounted at a distance from the joint connection (1) of the seat member (S).

Abstract: A chair with variable pitch having a frame set to rest on the floor, at least one central element that creates a substantially horizontal longitudinal axis supported by the frame, a seat supported by the central element, one pair of first stiles parallel to each other and set at the ends of the central element, and a backrest that has its top connected to the first stiles through first flexible couplings and its bottom connected to the seat through a second flexible coupling. The seat is connected to the central element through swivel means that allow the planar rotary-transverse movement of the seat, combined with a rotary rocking movement of the backrest around a longitudinal axis created by the flexible couplings.

Abstract: Adjustable seats and components thereof are detailed. The seats, particularly (although not exclusively) useful in commercial aircraft, permit substantial angular recline without the corresponding rearward linear movement necessarily occurring in conventional seats. The seats additionally may have discontinuous, or non-integral, seat bottoms, with the heights of the forward portions of the bottoms being adjustable mechanically. Tray tables optionally associated with the seats further omit any central slot and may define one or more pivot axes in locations different than exist in conventional seats.

Abstract: An armchair (10) comprises a support frame (11, 12) to which a base seat (14) and a back (16) are fastened, which elements are movable between a first and a second position through power-driven movement means (21). The base seat (14) is pivotally mounted, at the front, to the support frame according to a first transverse axis (15). The back (16) is pivotally mounted to the base seat, at the rear thereof, according to a second transverse axis (17) for rotation of the back itself. The back (16) has extensions (18) extending downwardly past said second axis (17) and having ends constrained to slide longitudinally of the armchair. In this manner, on rotation of the back about said second axis (17), the base seat rotates in the same way about said first axis (15).

Abstract: A chair, in particular an office chair, has a backrest that is articulated on a seat carrier via a backrest carrier, and has a seat surface that can be moved synchronously with the backrest. The front region of the seat surface is connected to the seat carrier via a sliding guide. The rear region of the seat surface is connected to the seat carrier via a seat link. A top point of rotation connects the seat link to the seat surface. A bottom point of rotation connects the seat link to the seat carrier. The distance between the top point of rotation and the backrest is smaller than the distance between the bottom point of rotation and the backrest. A sliding guide for the seat surface is provided in the backrest carrier for synchronizing the movement of the backrest and the movement of the seat surface.

Abstract: The chair, particularly an office chair, has a backrest articulated to a seat support by way of a rest support. A seat surface is movable synchronously with the backrest. A front region of the seat surface is connected to the seat support via a sliding guide and a rear region is connected to the seat support via a seat link. A distance from an upper pivot point, which connects the seat link to the seat surface, to the backrest is shorter than the distance from a lower pivot point, which connects the seat link to the seat support, to the backrest. The movements of the backrest and of the seat surface are synchronized by a sliding guide provided between the seat link and the rest support.

Abstract: A reclining leisure chair includes a main body, a locating member mounted in the rear edge of the main body, and two sliding members mounted in the front edge of the main body. The locating member is formed of a U-shaped frame seat, an action member, a resilient member, an auxiliary piece, a clamping piece, an arresting member, a bolt, and an action rod. The locating member works with ease and without jamming the sliding members.

Abstract: A reclining leisure chair comprises a main body, a locating member mounted in the rear edge of the main body, and two sliding members mounted in the front edge of the main body. The locating member is formed of a U-shaped frame seat, an action member, a resilient member, an auxiliary piece, a clamping piece, an arresting member, a bolt, and an action rod. The locating member works with ease and without jamming the sliding members.

Abstract: The chair mechanism is configured as a so-called synchronizing mechanism in order, in the case of an adjustment in inclination of the rear support (4), to achieve simultaneous, harmonic adjustment of the seat panel (8). The underframe is positioned on a height-adjustable pneumatic spring (13,14). For the synchronized movement, use is made of a mechanical torsion spring, preferably a rubber spring, and a further mechanical spring, preferably a helical spring, is arranged parallel thereto, with accumulative effect in relation to the resistance of the torsion spring. The strength of the torsion spring can be adjusted. The positioning of the axes of rotation (A1-A4) is of considerable importance for the kinematics. The chair can be adjusted from an assembly position, where the springs can be inserted in a state in which they are relieved of stressing, via the vertical position into the inclined position.

Abstract: A chair having two body supports which move in similar rotation and inverse elevation to one another to change from a chair configuration, where one support is higher than the other, to a spine tensioning apparatus, where the supports are near equal in elevation. Preferably body supports are spaced apart from one another such that the only interconnecting human link between the two supports, when in a near equal elevation configuration, is the human spine. The spine, in this configuration is then subjected to similar forces as a simple beam supported by two separate forces, tension, compression, shear and moment. The spine is aided by and through tension and contraction and increased blood flow and afforded the ability for spinal muscle, nerve and soft tissue development and maintenance.

Abstract: In a working chair with a seat (12), a back (14) and a lower frame the seat (12) is pivotally connected in the proximity of the front edge with a carrier frame (11) whereas a back support (15) connected with the back (14) is pivotally connected with the carrier frame (11) as well as with the seat (12). The pivot connections are provided for synchronous movement of the seat (12) and the back (14), whereby the seat from a backwards inclining extreme position may be moved to a forwards inclining extreme position and the back (14) synchronously therewith from a backwards inclining position in which it forms a maximum angle with the seat towards a more erect position, while gradually reducing its angle with the seat.

Abstract: An apparatus, adaptable to a wheelchair, for assisting a person seated in the wheelchair to move to a standing position, the apparatus including a member slidable upward and downward along the chair; a seat, having a seat portion hinged to a back portion; at least one flexible strap member, engaged at a first end to the slidable member, and traveling along an under surface of the seat, and engaged at a second end to a stationary portion of the wheelchair, so that when the slidable member is moved to a down position, the flexible strap is pulled taut beneath the seat, lifting the seat from a sitting position to a substantially raised flat position, so that a person sitting in the seat is likewise lifted from a seated position to a partially standing position. The slidable member may be positioned along the front or rear of the chair, depending whether the person would be assisted by a third person in front of or behind the chair.

Abstract: The invention pertains to wheelchairs, and more particularly, to a wheelchair seat having a seat back member which substantially maintains a constant vertical angle when the seat bottom or rail is pivotably raised and lowered. Accordingly, the angle between a seat back and seat rail is changed during adjustment of the seat rail.

Abstract: A tiltable chair including a base member (44), a seat (32), a back (34), and a linkage assembly (40) adapted to allow the seat and back to tilt downwardly and rearwardly and to allow pivotal movement of the seat about a pivot axis (52) in substantial alignment with the hip joints of a user. Other aspects of the invention are to provide a vertically adjustable column (42) for supporting the seat of the chair, a support assembly including a frame member (33) having a central opening therethrough and a receptacle formed around the perimeter thereof, a carrier member adapted to fit inside the receptacle, and a membrane of elastic material (210) covering the central opening, and a pair of armrests (36) adapted to be mounted to the chair to allow pivotal movement thereof.

Abstract: The subject matter of the invention is an adjusting device for a piece of furniture on which to lie or for sitting on with at least one swivel part (12, 14) that is pivotally attached, by way of a torsion bar (20, 22), to said piece of furniture on which to lie or for sitting on, with a housing (26) and with a bearing element (38, 40) accommodated in said housing (26), wherein the bearing element (38, 40) is provided with a recess (66, 68) that partially surrounds the torsion bar (20,22) and in which said torsion bar (20, 22) may be introduced so that the adjusting device (24) is attached to the torsion bar (20, 22) with positive fit, and with an actuating drive (46, 48) that is accommodated in the housing (26) and acts on the torsion bar (20, 22). The provision of an adjusting device that is easy to install on the piece of furniture and that can be manufactured at low cost is achieved by the fact that the actuating drive (46, 48) pushes the torsion bar (20, 22) into the recess (66, 68).

Abstract: A chair comprising a base, an adjustable frame supported by said base, a seat and a back. The chair is characterized in that the adjustable frame is swingable with respect to the base, preferably about a substantially horizontal axis, and comprises telescopic arms, in that the seat and the back are swingably connected to one another, and in that the seat and the back are connected to said telescopic arms, whereby adjustment of these latter permits one to vary the inclination of the seat and back. Preferably, the inclination of said seat and back vary in such a way that the center of gravity of the user's body is located at or near the line of application of the resultant of the reactions of the floor on the seat base.

Abstract: A latching mechanism for use with a seat assembly having a separately movable seat cushion and seat back, the latching mechanism including a base member, a sector support for supporting the seat back and a lever. The sector support is pivotally coupled to the base member and includes an engagement surface. The lever is pivotably coupled to the base member, and includes a stop. As the seat cushion is moved to a seat forming position, the seat cushion will actuate the lever, the lever placing the stop into contact with the engagement surface and preventing the movement of the seat back.

Abstract: A chair has a seat supported on a base support assembly. The support assembly includes an upper bracket with a transverse tube mounted on the forward end thereof. The seat includes an upper shell having hooks extending downwardly from the underside thereof. The hooks are dimensioned and configured to engage the tube and provide for pivotable movement of the upper shell about the tube.

Abstract: A portable baby seat is provided having a front member, a back member and a seat. The seat is hingedly coupled at its back edge in to an interior bottom surface of the front member. The seat is also coupled to a front region of the back member by a link which is hingedly coupled to the seat and extends therefrom. The link is secured to a point located on the front region of the back member, the point being eccentrically arranged with respect to the hinge axis of the hinged connection between the front and back members of the baby seat. The hinged connection between the front and back members of the baby seat is provided with a bolt to limit its swinging arc in order to thus protect the baby against an excessive approach between seat and back member.

Abstract: An office-type chair which provides for synchronous differential tilting of the seat and back assemblies, with the seat assembly being constructed such that the front lip thereof does not significantly lift upon rearward tilting. The chair incorporates a tilt control mechanism formed by a control body which secures to the upper end of the chair pedestal and an upright which pivotally connects to the control body about an axis disposed forwardly of the pedestal. A pivot assembly connects the upright and control body together.

Abstract: An office swivel chair is provided comprising a foot with a center column extending upwards therefrom, wherein the center column may be variable in length and/or spring mounted, a seat carrier is secured at the upper end of the center column, a seat top pivotable around a horizontal axis close to the front edge of the seat top, is connected with the seat carrier, and is biased by a spring arrangement with an upwards directed force, and a back rest attached at least one upwards extending lever which is articulately connected with the seat carrier at a first link point under the seat top, and spaced therefrom is articulately connected with the underside of the seat top at a second link point wherein, both link points comprise swivelling axes in parallel with the seat top swivelling axis. The length of the lever between the first link point and the second link point is variable by displacing the first link point and/or the second link point in the direction of the lever.

Abstract: A mechanism is presented for the constraint-coupled adjustment of seat and backrest of a dental patient chair, whereby the seat-side end of the backrest is guided in a curved guide of the seat carrier, and whereby the seat carrier is pivotably connected to an upper part around a backrest-proximate tilting axis that, given an inclination of the backrest, the seat carrier with seat and leg support is tilted back around the tilting axis and, conversely, is tilted forward when the backrest is raised up. Inventively, a flexible, bendable force transmission element is provided for the constraint-coupling that has its one end secured to the upper part and has its other end secured to the seat-side end of the backrest. The force transmission element is guided over at least one roller in the fashion of a block and pulley and thus produces an adjustment motion effected by constraint-coupling of backrest and seat. A chain that is guided over chain rollers is advantageously provided as force transmission element.

Abstract: The raising wheelchair, for stability, has a wheeled frame, preferably including two side frames (25), and a raising system (21) with the customary seat and backrest, pivotably secured to the wheeled frame (11). A footrest (23) is connected to at least one shaft or rod element (37) which is guided in a tubular element of the respective side frame (25). Coupling elements (39) at each side of the wheelchair couple the raising system (21) with the shaft or rod element (37) of the footrest (23). Light weight and high stability are obtained by utilizing a portion of the frame construction for guidance of the footrest in its movement from a raised to a lowered position against a floor.

Abstract: An office-type chair which provides for synchronous differential tilting of the seat and back assemblies, with the seat assembly being constructed such that the front lip thereof does not significantly lift upon rearward tilting. The chair incorporates a tilt control mechanism formed by a control body which secures to the upper end of the chair pedestal and an upright which pivotally connects to the control body about an axis disposed forwardly of the pedestal. A pivot assembly connects the upright and control body together.

Abstract: A seat system for a vehicle, is provided which includes a seat which has a seat cushion and a seat back and which is disposed within a vehicle passenger compartment, wherein the seat can be used for multipurposes. A pair of seat supporting frames disposed on opposite sides of the seat are connected at one end thereof to a pair of slide members capable of being moved along guide rails, so that the frames can be tilted around a first shaft extending in a widthwise direction of the vehicle and their tilted positions can be fixed. The seat cushion and the seat back are supported at the other ends of the seat supporting frames, so that they can be relatively turned around a second shaft parallel to the first shaft and their relative turned positions can be fixed.

Abstract: A chair having adjustable synchronous tilting, where a seat (7) pivotable about a seat pivot axis (5) and a back-rest support (11) pivotable about a back-rest pivot axis (9) are coupled by a coupling link (15) for simultaneous inclination changes, the synchronous tilting ratio, i.e. the ratio of the coupled inclination changes of seat and back-rest can be changed and individually adjusted, for example by displacing the engagement points of the coupling link (15) at the seat (7) and the back-rest support (11), respectively.

Abstract: A reclining chair with exercising function includes symmetrical front and rear chair frames, and an adjusting rod pivotally connected to said front and rear chair frames by connecting plates. The adjusting rod is connected by springs to the rear chair frame. Both sides of the front chair frame are respectively provided with connecting plates to pivotally connect to a securing rod and a front support rod. The rear chair frame is pivotally connected to a rear support rod at both sides thereof by connecting plates. When the adjusting rod is retained at a bottom rod, an ordinary reclining chair is accomplished. When the adjusting rod is pulled upwardly, the reclining chair will bent downwardly or upwardly for V-shaped or inverted V-shaped body exercises.

Abstract: The disclosure relates to a method for inclining a chair seat and a chair having an inclinable seat for which maintenance can be easily carried out from outside the attaching frame of a chair, wherein the attaching frame is applicable to leg portions of various kinds of chairs. According to the method and the chair for inclining a backrest side of a seat by causing the backrest to be inclined rearwardly, the structure is such that by rearwardly inclining the backrest attached to a backrest attaching member pivotally supported so as to be inclined rearwardly at one side of an attaching frame opened downward and including a top plate 18 and side plates fixed at the upper end of a leg portion, a tip end protruding part of the backrest attaching member is caused to protrude above the attaching frame and is brought into contact with and pushes up the rear, backrest side of a seat receiving plate which is pressed toward said attaching frame and is inclinably attached to a front end of the attaching frame.

Abstract: A seating furniture component, especially an upholstered furniture component with coupled backrest and seat adjustment, with a support chassis (2), with a backrest (4) adjustably attached to the support chassis (2), and with a seat (5) adjustably attached to the support chassis (2), as well as connection mechanism (6) for synchronous adjustment of the backrest (4) and seat (5) relative to the support chassis (2). The backrest (4) executes a tiltback and lowering motion relative to the support chassis (2) essentially as a pivoting motion around a pivot axis which is in the angle formed by the backrest (4) and seat (5) in front of the backrest (4) and above the seat (5). The seat (5) executes a corresponding but minor movement in the form of a superimposed sliding and lifting motion.

Abstract: A seating furniture component with coupled backrest and seat adjustment, having a support chassis (1), a backrest (2) and a seat (3) adjustably attached to the support chassis (1), with the backrest (2) and seat (3) being movably joined to one another in the area of the vertex of the angle between them, the backrest (2) being coupled to a pivot axis (4) on the support chassis (1) at a distance above the vertex of the angle, and the seat (3) being movably attached to the support chassis (1) near the front edge of the seat (3) by a support mechanism (5, 6). The backrest (2) executes a superimposed tiltback and lowering motion from a sitting position into a reclining position, relative to the support chassis (1), while the seat (3) executes a slight superimposed sliding and lifting motion in a synchronized manner.

Abstract: The present apparatus comprises a multi-position chair assembly for the full back and bottom support of a user through a range of sitting postures, including a movable lower bottom support panel secured to a hub and column, by an adjustment control mechanism, and a back support panel pivotably secured to the hub by a frame struts connected to the hub and to the back support panel, the lower bottom support panel and the back panel having a linkage therebetween to permit corresponding posture supportive tilting of the back support panel depending upon the user position-induced tilting of the lower bottom support panel.

Abstract: Integrated seat, back and mechanisms are provided for tilting chairs, and other similar seating. The chair has a base, a seat, a back, a back support and a mechanism which interconnects the seat, back and back support, and imparts a predetermined synchronous movement to the seat and back, i.e. rearward tilting of the seat and simultaneous rearward tilting of the back. The chair back has rotation means for rotatably connecting the chair back to the back support. The rotation is about a rotation axis which passes through the upper body of a person when the person is sitting on the seat and resting against the front of the chair back. The bottom portion of the chair is preferably guided so that the bottom may move along an arc between a first position and a second position which is forward and lower than the first position. The mechanism also has a very large range of movement allowing the user a continuous angular variation from forward inclination to full reclined inclination.

Abstract: Disclosed herein is a chair, especially a chair for the handicapped, in which the backrest and seat are jointly angularly adjustable by only one motor, with the motor and a gas spring being articulated on only one movable pivot axis. This results in a very simple and compact design that has few individual parts.

Abstract: A table including an articulated deck having a head section, a seat section, a foot section and at least one of the sections is coupled to the frame for movement between a generally horizontal position and a tilted position about a first effective axis above a patient support surface of a mattress of the deck. Pivoting and translation of the deck section extends and contracts the deck sections relative to each other to match the expansion and contraction of the skin of patient as the deck sections move between their horizontal and tilted positions.

Abstract: A reclining press-back seating unit utilizes modified three-way reclining mechanisms. The three-way mechanism is modified to be free of a footrest, and is mounted within the press-back seating unit so that its links are positioned in the upright position in the same orientation to one another that they would be in the TV position of the three-way reclining unit. The seating unit can be used with virtually any three-way reclining mechanism, including those for wall-avoiding units and high-leg units, to create pressback versions of these units which are particularly suitable for use in multiple seat seating units.

Abstract: A support structure is provided for attachment to a chair base to support a seat and a backrest. The structure includes a tilt mechanism operable by leaning on an associated backrest to bend a spring link. As a result, both the backrest and seat tilt a predetermined amount. The disclosure also provides an embodiment in which the tilt mechanism is adjustable so that the user can vary the amount of tilt achieved by leaning on the backrest.

Abstract: A wheelchair having a lifting device wherein the seat and the footrest are independent from each other and are mounted on the top ends of two deformable quadrilaterals extending upwards from the chassis and sharing a common moving portion, and wherein the raising and lowering control devices comprise a drive member interposed between the chassis and one of the moving members of one of the quadrilaterals, and suitable for controlling the displacement of said quadrilaterals between a stable folded state and a stable unfolded state.

Abstract: A tilt-up automobile seat having a tilt-up mechanism positioned under a seat cushion. The seat cushion and a seat back are continuously positioned in a flat plane at a predetermined angle and the whole seat is tilted upwards around a front side of the seat cushion as a fulcrum. The tilt-up mechanism is always covered by a combination of an upper cover for covering at least its upper part and an under cover for containing at least its lower part even in a tilt-up position of the whole seat, resulting in preventing the tilt-up mechanism from being seen from outside. The upper and lower covers can include flange parts overlapped to each other, having a predetermined height.

Abstract: Integrated seat, back and mechanisms are provided for tilting chairs, and other similar seating. The chair has a base, a seat, a back, a back support and a mechanism which interconnects the seat, back and back support, and imparts a predetermined synchronous movement to the seat and back, i.e. rearward tilting of the seat and simultaneous rearward tilting of the back. The chair back has rotation means for rotatably connecting the chair back to the back support. The rotation is about a rotation axis which passes through the upper body of a person when the person is sitting on the seat and resting against the front of the chair back. The bottom portion of the chair is preferably guided so that the bottom may move along an arc between a first position and a second position which is forward and lower than the first position. The mechanism also has a very large range of movement allowing the user a continuous angular variation from forward inclination to full reclined inclination.

Abstract: A reclining seat of the type characterized by having a seat back which reclines and a seat bottom which elevates, the improvement which comprises linkage means interconnecting the seat back and the seat bottom and providing a ratio of seat back movement to seat bottom movement of greater than 1 to 1. The pivot axis between the seat back and seat bottom resides on a lateral axis extending from one side of the seat to the opposite side of the seat through the anatomical hip joint region of a seat occupant, for permitting the seat back and seat bottom to move relative to each other about the same pivot axis as the seat occupant will move his or her legs relative to the torso.

Abstract: The seat pan of an aircraft passenger sleeper seat is mounted on a pivot axle for movement between a normal substantially horizontal position and a tilted position in which its front edge is lower than its rear edge. The seat back comprises a first portion which is mounted for angular movement between a substantially upright position and a reclined position, and a second portion mounted on a pivot axle for movement between an erect position in which it is substantially parallel to the first portion and a reclined position in which its upper edge is lower than when in its erect position. When the seat pan is tilted and the second portion of the seat back is reclined, their upper surfaces form a substantially plane support surface for a sleeping passenger.