A chair includes a back member and arm brackets. The back member is tapered toward an end that is adjacent to a seat. The arm brackets are attached under a bottom portion of the seat. Each arm bracket is adjustable to provide a seat clearance area for the seat when one or more of the arm brackets are adjusted up to approximately 90 degrees from an original upright position.

An article of furniture has retractable and extendable wheels secured beneath each leg. The mechanism for retraction and extension is accomplished by an activation means in mechanical communication with each wheel.

A spring member is disposed so that a biasing direction is in a forward/rearward direction, and includes a front side engagement portion disposed on a front portion of the spring and a rear side engagement portion disposed on a rear portion of the spring, a seat includes a front side spring receiving portion engaged with a front side engagement portion, a backrest or a support structure includes a rear side spring receiving portion engaged with the rear side engagement portion and an adjustment portion configured to adjust a position of the rear side engagement portion in the upward/downward direction together with the rear side spring receiving portion, and an upper limit position of the rear side engagement portion of the spring member adjusted by the adjustment portion is located above an pivot axis at which the backrest is rotatably supported by the support structure.

A spring member is disposed so that a biasing direction is in a forward/rearward direction, and includes a front side engagement portion disposed on a front portion of the spring and a rear side engagement portion disposed on a rear portion of the spring, a seat includes a front side spring receiving portion engaged with a front side engagement portion, a backrest or a support structure includes a rear side spring receiving portion engaged with the rear side engagement portion and an adjustment portion configured to adjust a position of the rear side engagement portion in the upward/downward direction together with the rear side spring receiving portion, and an upper limit position of the rear side engagement portion of the spring member adjusted by the adjustment portion is located above an pivot axis at which the backrest is rotatably supported by the support structure.

A body support assembly includes a seat assembly and backrest assembly supported by a tilt control assembly. Methods of using and assembling the body support assembly are provided.

A seating arrangement includes a seat assembly slidably movable between a forward most position and a rearward most position and that includes a seat support structure configured to support a seated user thereon, and at least one elongated slide bearing attached to the seat support structure and including a bearing surface and at least one stop member, wherein the bearing surface and the at least one stop member are a single, integral piece. The seating arrangement further includes at least one slide support member that slidably supports the slide bearing thereon between the forward most position and the rearward most position, wherein the at least one stop member is configured to prevent the seat assembly from being moved beyond at least one of the forward most position and the rearward most position.

A seating arrangement includes a seat assembly slidably movable between a forward most position and a rearward most position and that includes a seat support structure configured to support a seated user thereon, and at least one elongated slide bearing attached to the seat support structure and including a bearing surface and at least one stop member, wherein the bearing surface and the at least one stop member are a single, integral piece. The seating arrangement further includes at least one slide support member that slidably supports the slide bearing thereon between the forward most position and the rearward most position, wherein the at least one stop member is configured to prevent the seat assembly from being moved beyond at least one of the forward most position and the rearward most position.

A tilt locking device for a chair, comprising a housing configured for connection to one of a seat and a frame; a first rotatable locking member, rotatable about a first axis and biased in a first direction about the first axis, the first rotatable locking member is configured for interlocking with a notch member; a rotatable activation member, rotatable about a second axis, the rotatable activation member is configured to abut and rotate the first rotatable locking member in a second direction opposite the first direction into interlocking with the notch member.

A tilt locking device for a chair, comprising a housing configured for connection to one of a seat and a frame; a first rotatable locking member, rotatable about a first axis and biased in a first direction about the first axis, the first rotatable locking member is configured for interlocking with a notch member; a rotatable activation member, rotatable about a second axis, the rotatable activation member is configured to abut and rotate the first rotatable locking member in a second direction opposite the first direction into interlocking with the notch member.

A chair includes a back member and arm brackets. The back member is tapered toward an end that is adjacent to a seat. The arm brackets are attached under a bottom portion of the seat. Each arm bracket is adjustable to provide a seat clearance area for the seat when one or more of the arm brackets are adjusted up to approximately 90 degrees from an original upright position.