A seat tilting mechanism comprising a main body, a support member rotationally mounted to said main body, and a first extension coil spring mounted between said main body and said support member to provide resistance to rotation of said support member, in which said seat tilting mechanism further comprises a second extension coil spring and an engagement mechanism which engages said second extension coil spring for resistance to rotation of said support member when said first extension coil spring reaches a pre-determined point of extension.

A seating furniture includes a seat device and a backrest device connected via at least one first rotatable coupling in respective coupling portions (P) of the backrest device and at rear portion (B) of the seat device. A base supports the seat device and the backrest device. The backrest device comprises a portion extending in a direction towards the base and past the first rotatable coupling, and the portion is rotatably coupled to and supported on the base via at least one respective link arm. The seat device is rotatably coupled to and supported on the base via a second rotatable coupling attached closer to front end (F) of the seat device than the first rotatable coupling. A lockable control device controls the movements between the backrest device and the seat device. The construction is well-balanced, and low forces are required to adjust the chair in all positions.

A seating furniture includes a seat device and a backrest device connected via at least one first rotatable coupling in respective coupling portions (P) of the backrest device and at rear portion (B) of the seat device. A base supports the seat device and the backrest device. The backrest device comprises a portion extending in a direction towards the base and past the first rotatable coupling, and the portion is rotatably coupled to and supported on the base via at least one respective link arm. The seat device is rotatably coupled to and supported on the base via a second rotatable coupling attached closer to front end (F) of the seat device than the first rotatable coupling. A lockable control device controls the movements between the backrest device and the seat device. The construction is well-balanced, and low forces are required to adjust the chair in all positions.

A swingable chair chassis comprises a rocker seat including a chamber defined between a bottom wall and a peripheral wall. The bottom wall includes a slot extending in a front/rear direction. A lid is securely mounted to a bottom of the seat and the rocker seat. A supporting seat is disposed in the chamber of the rocker seat. The supporting seat includes a central portion having an insertion hole coupled with chair post. The supporting seat includes an arcuate supporting face formed on an upper side thereof and abutting against a lower face of the lid. A plurality of elastic elements is disposed between the bottom wall of the rocker seat and the supporting seat and provides movement elasticity when the rocker seat swings forward or rearward relative to the supporting seat. The supporting face abuts against the lower face of the lid during swinging movement of the rocker seat.

A seating arrangement includes a back frame that includes a top portion, a bottom portion, and a pair of side portions that cooperate to define an opening, wherein at least one of the top portion, the bottom portion and the side portions include a longitudinally extending channel, a back shell having a forwardly facing support surface located within the opening and configured to support a seated user, and an attachment portion that extends about at least a portion of a periphery the support surface, and a cover member extending over the support surface, wherein the cover member is directly attached to the attachment portion of the back shell at an attachment location, and wherein the attachment location and the attachment portion of the back shell are located within the channel and concealed from view.

A reclining and declining chair, preferably one that rotates with respect to its base, having a chair seat frame or plate and having a vertical or generally vertical member that extends beneath to support is reclined and declined by tilting at least an upper portion of the vertical or generally vertical support. Optionally the chair can also have a reclining backrest and a leg/foot rest that can be raised and lowered. The tilting, reclining, declining and raising and lowering motions are accomplished by drive mechanisms that can be manually powered, electrically powered, fluid driven, etc. with operator controls allowing increased range and ease of reclining, declining plus other desirable advantages with these types of chairs.

The invention provides an article of adjustable furniture (10) comprising a backrest (20) and an adjustable headrest (130) pivotally mounted with respect to the backrest, actuator means (100) for moving the headrest between raised and lowered positions, and guide means (138, 140) arranged between the headrest and the backrest for rotating the headrest with respect to the backrest as the headrest moves between its raised and lowered positions. The guide means includes first and second guides (138, 140), each associated with one of the backrest and the headrest and having at least one follower (142, 144) associated with the other of the backrest and headrest. The first and second guides are inclined with respect to each other such that a turning moment is generated on the headrest when the headrest is raised or lowered. In one embodiment the article of adjustable furniture comprises a floor standing base section (16), adjustable seat (18), backrest (20) and headrest (130) sections and actuator means (100) for moving the backrest and headrest sections. The seat section is movably mounted with respect to the base section. The backrest is movably mounted with respect to the seat section and the headrest is movably mounted with respect to the backrest section. The actuator means includes a single actuator (102) for co-ordinated movement of the adjustable backrest and headrest sections for selectively altering the configuration of the article of furniture. The actuator has a first range of movement for moving the headrest with respect to the backrest. A second range of movement moves the backrest with respect to the seat section to provide a recliner function.

Disclosed herein is a chair that includes a backrest portion, a seat portion coupled with the backrest portion, a column portion coupled with the seat portion, a linkage coupled with the backrest portion, a leaf spring in direct contact with the linkage, an arc-shaped toothed structure fixed translationally relative to the column portion, and a different toothed structure in contact with the arc-shaped toothed structure. The chair is also configured such that when a weight is applied to the seat portion, a fulcrum point of the leaf spring moves as the different toothed structure moves along the arc-shaped toothed structure to thereby shorten a working length of the leaf spring and provide an increased resistance to tilting of the backrest portion relative to the column portion. A process for assembling the chair and a weight-based tilt-resistance assembly for use with the chair are also described herein.

A support mechanism for mounting a seat part to a foot part of a functional chair having a slide bearing which cooperates with a front section of the seat part, and a pivotable support part which is supported by a cantilever part and which is connected to a region of the seat part that is adjacent to the rear region of a seat surface section of the seat part.

A support mechanism for mounting a seat part to a foot part of a functional chair having a slide bearing which cooperates with a front section of the seat part, and a pivotable support part which is supported by a cantilever part and which is connected to a region of the seat part that is adjacent to the rear region of a seat surface section of the seat part.