Abstract: An item of seating furniture, in particular an office chair, having a pedestal with a support column on which a first rotational axis for a backrest is arranged which is pivotable between an upright starting position and a reclined resting position. The backrest is articulately connected in its lower region to a seat part, and when the seat part is in one piece, the articulatable connection is provided about a second axis. When the seating furniture is in the upright starting position, the second axis is arranged below the first axis. The rear seat part is non-rotatably connected to the backrest. The front seat part or the one-piece seat part is supported by kinematicsin relation to the carrying frame. The front seat part or the one-piece seat part is lowered relative to the rear seat part or the backrest by means of kinematics when the backrest is pivoted back.

Abstract: A collapsible stroller comprising a frame and a reversible seat (5) comprising an armrest portion (5.5) is provided. The reversible seat (5) is mountable via an attachment point on the stroller frame in either a forward or rearward orientation with respect to the stroller frame, and in such a way that the attachment point can be moved relative to the stroller frame for collapse of the reversible seat (5) along with the stroller frame, irrespective of the reversible seat's orientation. An associated reversible seat structure is also disclosed.

Abstract: A passenger seat includes a seat back pivotably connected to a seat pan assembly, an armrest pivotally connected to the seat back, and a main linkage pivotably connected to the seat pan assembly at a first pivot point defining a first pivot axis. The main linkage is interconnected to the seat back through a secondary linkage and the main linkage is also interconnected to the armrest through a guide member that travels within a guide slot carried on the armrest and defining a guide pathway. Inclination of the seat back with respect to the seat pan assembly pivots the main link about the first pivot axis with respect to the seat pan assembly, which vertically moves the armrest with respect to the seat pan assembly, and maintains an upper surface of the armrest in substantially parallel relation with the seat pan assembly.

Abstract: A folding seat for an aircraft has a backrest, a seat area and an armrest. The seat area is pivotable. When the seat area is pivoted, the armrest is pivotable downwards, the seat area and the armrest being coupled by at least one coupling element in the form of a bevel gear.

Abstract: A lift chair includes a base, a seat mechanism and a driving module. The seat mechanism includes a back frame, a seat frame, a foot frame and two hand rails. The seat frame is pivotally coupled to the base, and the driving module installed between the base and the seat mechanism drives the seat mechanism to perform a motion with respect to the base, so that if a user wants to stand up, the user can use the support from the seat frame and the back frame as standing aids to stand up successfully.

Abstract: A chair, in particular an office chair, has: a chair column, a seat holder secured to said chair column, and a backrest, wherein an adjusting mechanism is provided with which the backrest can be inclined relative to the vertical, wherein the adjusting mechanism includes an upward-arching curved guide, which is rigidly joined to the seat holder and on which a holder element that supports the backrest is movable along an upward-arching curved path for adjusting an inclination of the backrest, wherein the seat holder is inclined to a horizontal via an adjusting device secured to the chair column, and wherein the adjusting device includes a supporting arm, secured to the chair column, on which arm the seat holder is mounted pivotably via a joint with a horizontal pivot axis.

Abstract: The invention relates to a chair, especially an office or work chair or similar, whereon a back-rest part (15) can be placed in an inclined position from an initial or rest position via a first axis of rotation (12). A seating part (14) performs a longitudinal displacement around a second axis of rotation (20) and an inclined displacement around a third axis of rotation (11) in a synchronous manner with respect to the inclined movement of the back-rest part (15). A return device (13) is provided for returning the back-rest part (15) and/or seating part (14) to the initial position or rest position. The office chair (1) comprises a carrier frame (5) which disposed centrically on the leg frame (2) and which supports in a stationary manner the first axis of rotation (12) on the centre of the leg frame, said axis of rotation remaining at a constant, predetermined distance above the seating part (14) in the rest position and in all inclined positions of the back-rest part (15).

Abstract: An article of seating furniture is provided with a lift mechanism. The article can be a chair with a base and a seat that is pivotally connected to the base. A back is coupled to the seat and may be either fixed to the seat or rotatably coupled to the seat. An actuator is mounted to the base extending towards the rear of the chair. The actuator is pivotally coupled to the base on one end and is pivotally coupled to the seat on the other end. The actuator moves the seat between a generally horizontal position and a raised position. With the back rotatably mounted to the seat, a linkage bar can be added that extends from base front to a bracket that mounts the back to the seat. The linkage bar reclines the back as the seat is raised from horizontal position to the raised position.

Abstract: A pivoting joint for use in a task chair or the like provides an adjustable elastomeric coupling that permits multi-axis rocking of the seat pan with a restoring force that provides controlled stability.

Abstract: A chair has a backrest and a pair of armrests. A pair of support struts for supporting the backrest is connected to a shaft of a base under a seat. The armrest is supported by an arm post. An operating lever is mounted on the upper front end of the arm post. When the backrest is tilted, it is held at a desired angle by pressing up the operating lever.

Abstract: A chair having an arm, a backrest and a flexible backrest support that is rigidly attached to the arm and the backrest. The flexible backrest support includes a spring located between rigid end portions that are mounted to the chair arm and backrest. The flexible backrest support allows the backrest to pivot while the arm remains stationary. Optionally, a supplemental backrest support may be included.

Abstract: A structure for an office chair with articulation by synchronized movement of the seat and the backrest of the adjustable type includes a swivel type movable base with a height adjustable column supporting a seat surface and a reciprocally hinged backrest. The seat surface is connected frontally by two braces to the corresponding anterior side of a central support body anchored on the top of the adjustable column along the vertical axis. The central support body supports with hinges the lower ends of two arm-rest stanchions provided with a device for the adjustment of the height of the seat and with an locking-unlocking device for the oscillation of the backrest and the chair. The frame of the backrest is hinged along the sides and in correspondence with the posterior part of the seat. A compressed spring is interposed between the central support body and the support frame of the backrest.

Abstract: A backrest depth adjustment mechanism which allows adjustment of the backrest assembly in a front-to-back manner with respect to the seat. The backrest assembly generally includes a backrest frame supporting the backrest. The backrest frame includes opposite end portions, and at least one of the end portions includes a backrest depth adjustment mechanism. The backrest depth adjustment mechanism includes a stationary portion and a movable portion, wherein the movable portion is movable with respect to the stationary portion. An actuator mechanism allows the user to actuate the backrest depth adjustment mechanism to move the backrest to a desired depth position.

Abstract: A chair has a backrest and a pair of armrests. A pair of support struts for supporting the backrest is connected to a shaft of a base under a seat. The armrest is supported by an arm post. An operating lever is mounted on the upper front end of the arm post. When the backrest is tilted, it is held at a desired angle by pressing up the operating lever.

Abstract: A method and a system for operating a dental operating chair connected to a computer, comprising operating elements and/or state indicators arranged on the dental operating chair, an interface via which the information is transmitted from the dental operating chair to the computer, in the form of function codes, by the operating elements and/or state indicators, and a memory region on the computer, in which at least one action associated with a function code is stored. To adapt the operating elements or the operating surface, software for managing the function codes is provided on the computer, by which the action associated with the function codes and stored in a configuration file is initiated. The allocation of the function codes of the operating elements and/or the state indicators of the dental operating chair to the PC actions can be configured by changing the configuration file.

Abstract: A chair includes a base having a control, and a seat and a back tilt bracket pivoted to the control for synchronous movement. An extension is adjustably supported on the back tilt bracket and is pivotally connected to a back support structure and a backrest frame in a four-bar linkage arrangement. The extension is adjustable to change the angular position of the back when in the rest position, and further provides a back tilt axis that is located rearward of a rear edge of the seat, which provides a unique back movement upon recline that is more rearward and less downward than most synchrotilt chairs. The back support structure includes a spine assembly pivoted to a rear end of the extension and extends upwardly. Armrests are operably supported on the spine assembly for vertical adjustment by an armrest mount, and a handle on the armrests is operably connected to a latch on the armrest mount for easy adjustment of the armrests.

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 tilt back chair provides for selective independent and concurrent movement of a chair back with respect to a chair seat. The seat is mounted to a spring biased bracket for pivotal movement about a seat tilt axis. The back is connected to a pair of pivot brackets projecting upwardly from the seat to provide for pivotal movement about a back tilt axis located above the seat and rearwardly of the seat tilt axis. When the seat is in a neutral seating position it can tilt downwardly at its forward edge about the seat tilt axis. The back is biased for displacement with the forward tilt of the seat and is tiltable rearwardly independently of the seat. The seat can also be locked in a fixed position.

Abstract: A system for supporting a seat-pan on a chair and for providing movement to an armrest on the chair. The system includes a mounting assembly with an upper rail having a front portion, a mid portion and a rear portion, and a lower rail having a front portion, a mid-portion and a rear portion. The upper rail is pivotally connected to the lower rail in a manner which allows g generally parallel motion of the rails relative to one another. An armrest support is pivotally attached to the mounting assembly, and includes a linkage for indexing movements of the armrest support relative to motion of the position of the upper rail relative to lower rail, so that motion of the upper rail relative to the lower rail produces a corresponding tilt of the armrest support.

Abstract: A tilt back chair provides for selective independent and concurrent movement of a chair back with respect to a chair seat. The seat is mounted to a spring biased bracket for pivotal movement about a seat tilt axis. The back is connected to a pair of pivot brackets projecting upwardly from the seat to provide for pivotal movement about a back tilt axis located above the seat and rearwardly of the seat tilt axis. When the seat is in a neutral seating position it can tilt downwardly at its forward edge about the seat tilt axis. The back is biased for displacement with the forward tilt of the seat and is tiltable rearwardly independently of the seat. The seat can also be locked in a fixed position.

Abstract: A reclining chair which includes a base, frame supports, and pivotable seat and back supports. The seat and back supports are pivotally connected for correlative movement, and the seat support is operably connected to an inclined ramp which raises the vertical height of the seat support during reclining.

Abstract: In the reclining apparatus of the invention(1, 21, 41, 61), the support member(2, 22, 42, 62), the seat member(3, 23, 43, 63) and the back rest member(5, 25, 45, 55, 75) are adjustably interconnected and the rod(11, 31, 51, 71) of the lock device(13, 33, 53, 73) is mounted on one of the support member, the seat member and the back rest member and fitted across another one of them. When a force is applied between the rod and the member through which the rod is fitted, all the positions of the above members are maintained.When a person changes the posture, e.g., stretches himself, on the reclining chair(1, 21, 61) or the reclinable bed(41), the lock between the rod and the member through which the rod is fitted is released and the positions of the support member, the seat member and the back rest member are re-adjusted. After the re-adjustment, when the person seats or lies on the chair or the bed, the rod is again firmly engaged with the member.

Abstract: An essentially self-balancing reclining chair is provided. The invention may be adapted to for use by any individual, regardless of size, shape or weight. The chair has a base and two parallelogram linkages spaced apart from and facing each other in parallel vertical planes. Each parallelogram linkage has upper, lower, front and rear linkage arms pivotally connected to each other to define the parallelogram. A back support is mounted behind and between the rear linkage arms, a seat support is suspended below and between the lower linkage arms, and a leg support is suspended below and between the front linkage arms. The upper linkage arms are pivotally connected to the base, such that the chair may be balanced by positioning the pivotal connection at a position corresponding to the approximate center of gravity of the chair and an average person. The pivoting points between the back support and the seat support are aligned with the person's hip joints.

Abstract: A reclining chair suspended from a pivot at the arms with the seat and back pivoted together at the lumbar area of the user's back and having two control levers for reclining consisting of the back panel of the chair and a thigh support and with the seat and arm elements connected with the control levers in a five axis geometry which permits the two control levers to operate independently. A clutch controls reclining of the seat without interfering with movement of the levers.

Abstract: The seat furniture is provided with a seat-plate backrest inclination-adjusting mechanism (6), a single-column supporting device (2) and a supporting foot (1). The backrest is composed of a backrest bottom part (16) and a backrest top part (14), and when the backrest inclination is fixed the backrest top part (14) can additionally be moved, counter to the pressure exerted by a restoring-spring arrangement (13), so as to swing freely to the rear between a first and a second stop position of an adjusting-spring device (22).

Abstract: A chair includes a seat support, a seat formed of two portions one of which is rigidly connected to the seat support, and a back rest also formed of two portions one of which is connected to another portion of the seat. The two seat portions are pivotally connected to each other and the two back portion are also pivotally connected to each other. The pivotable portion of the seat together with the back can swing from the sitting position of the chair to the backward-leaning rest position by means of a quadrangular linkage having four arms pivotally connected to each other. Two adjacent arms of the linkage are pivoted with respect to the rigid portion of the seat, about a pivoting connection near the horizontal axis of the pivotable portion of the seat.

Abstract: The invention relates to a suspension seat for a vehicle.The vehicle suspension seat has a back rest guided for vertical movement relative to a base part, a seat rest hinged to the back rest and guided for movement such that the body of the seat occupant swings about an axis through his ankles. An armrest is mounted for movement relative to the back rest and seat rest, so as to minimize movement of the seat occupant's arm relative to a steering wheel, by pivotally supporting the armrest about the instantaneous centers of rotation of the armrest relative to two parts of the seat which move pivotally with respect to each other in response to vertical movement of the back rest.