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.

Stackable or nestable single person seating assemblies that include a leg support defined by a plurality of legs and a crossbar that extends between the plurality of legs. The seat assembly includes a back that is rotatably coupled to the plurality of legs and a seat that is rotatably coupled to the back. A biasing element extends from the leg support to the seat and is coupled to a respective leg. Respective portions of the biasing element provide a third pivot axis and a fourth pivot axis that are activated when the back is reclined relative to the seat.

A double shell seat includes a base for resting on a floor, an outer shell supported by the base, and an inner shell movably supported within the outer shell. The inner shell has a seat support, a backrest support, and a hinge between the seat support and the backrest support. The inner shell is movable with respect to the outer shell from an upright condition in which the seat support has a position toward the rear of the outer shell, the backrest support has a position that is relatively vertical, and the hinge is at a first angle, to a reclined condition in which the seat support is forward of its position in the upright condition, the backrest support is less vertical than its position in the upright condition, and the hinge is open at a greater angle than the first angle. The seat is preferably free of coil springs.

An element of a device, in particular an element of a seating furniture assembly or of a seating furniture assembly component is provided. In addition, a device for an item of seating furniture, in particular a seating furniture assembly, for example a pivot mechanism, has an element of this type. Furthermore an item of seating furniture having a device of this type or having an element of this type is possible. In order to simplify the construction of items of seating furniture, the use of a deformation element which is integral, that is to say integrated into the device, which is deformable, which is composed preferably of a plastics material, and which serves as an energy storage member, is proposed.

A device for an item of seating furniture, in particular a pivot mechanism, and an item of seating furniture having such a device, are provided. In order to simplify the construction of items of seating furniture, the use of a deformation element which is integral, that is to say integrated into the device, which is deformable, which is composed preferably of a plastics material, and which serves as an energy storage member, is proposed.

A chair, such as a conference or office chair, includes a seat support; a backrest support; a storage member formed as a force storage element; and a transmission coupling the seat support with the backrest support which allows a pivoting of the backrest support and the seat support between an upright position and a backwardly pivoted position according to a predetermined sequence of movements. The force storage element is coupled with the seat support and the backrest support such that the predetermined sequence of movements is facilitated and the storage member provides a force restoring in the upright position and wherein the flexibly elastic storage member forms in conjunction at least with a first articulated rotation point of the transmission a kinematic chain.

A chair support shell has an integral back portion, seat portion, and joining portion between the back portion and the seat portion. At least a major portion of the support shell comprises a compliant structure, the compliant structure having a plurality of cells interconnected by a plurality of resilient members. The compliant structure provides compliance in the seat portion, compliance in the back portion, and compliance in the joining portion. The compliant structure enables recline of the back portion relative to the seat portion.

A seating arrangement includes a seat portion, a back portion, a support member caused to move between first and second positions, and a back recline lock arrangement that includes an actuator, a lock member caused to move between a locked position when the actuator is in an engaged position where the lock member prevents the support member from moving from the first position toward the second position, and an unlocked position when the actuator is in a disengaged position, and wherein the actuator is configured to move from the disengaged position to the engaged position when the chair back is in the reclined position, and the lock member is prevented from moving from the unlocked position to the locked position until the back assembly is moved from the reclined position to the upright position.

A seating arrangement includes an upwardly-extending back arrangement movable between upright and reclined positions, and a seat arrangement that includes a first link member extending horizontally and having forward and rearward portions, a second link member spaced from the first link member, a third link member coupled to the first and second link members and substantially flexible along a majority of a length thereof, and a fourth link member operably coupled to the first and second link members, the fourth link member being substantially rigid along a majority of a length thereof, wherein the link members cooperate to form a four-bar linkage assembly, and wherein the seat arrangement moves in a rearward direction as the back arrangement is moved between the upright position and the reclined position.

An arm assembly includes an arm support configured to support an arm of a seated user, an arm stalk extending downwardly from and supporting the arm support, an arm base telescopingly receiving the arm stalk between a first position and a second position and a bearing arrangement positioned between the arm stalk and the arm base. The bearing arrangement includes a bearing member configured to abut the arm base, and a biasing member configured to bias the bearing member from the arm stalk and into abutment with the arm base.