Abstract: A back portion for a chair has a back frame, the back frame having a lower portion adapted to extend across at least a major part of a lower region of a seated adult occupant's back, an upper portion vertically spaced from the lower portion and adapted to extend across at least a major part of an upper region of the occupant's back, and a relatively narrow interconnecting region between the upper portion and lower portion. The relatively narrow interconnecting region is resiliently flexible to provide a flexing movement in a rearward direction of the upper portion relative to the lower portion. A cover operatively connected to the back frame provides a supporting surface for the back of the seated occupant.

Abstract: A back portion for a chair has a back frame, the back frame having a lower portion adapted to extend across at least a major part of a lower region of a seated adult occupant's back, an upper portion vertically spaced from the lower portion and adapted to extend across at least a major part of an upper region of the occupant's back, and a relatively narrow interconnecting region between the upper portion and lower portion. The relatively narrow interconnecting region is resiliently flexible to provide a flexing movement in a rearward direction of the upper portion relative to the lower portion. A cover operatively connected to the back frame provides a supporting surface for the back of the seated occupant.

Abstract: A chair has a supporting frame, a seat portion, a back portion, and a recline mechanism. The mechanism moves the seat portion upon a reclining action of the back portion. The mechanism has a rear deformable member and a front deformable member operatively connecting the seat portion and the supporting frame. The recline mechanism also has a lower deformable member operatively connecting a lower part of the back portion and the supporting frame, and a puller member above the lower deformable member. The recline mechanism is configured such that as the back portion is reclined, the lower deformable member deforms and the puller member applies a rearward pulling action which causes the seat portion to move and the front and rear deformable members to deform.

Abstract: A chair has a supporting frame, a seat portion, a back portion, and a recline mechanism. The mechanism moves the seat portion upon a reclining action of the back portion. The mechanism has a rear deformable member and a front deformable member operatively connecting the seat portion and the supporting frame. The recline mechanism also has a lower deformable member operatively connecting a lower part of the back portion and the supporting frame, and a puller member above the lower deformable member. The recline mechanism is configured such that as the back portion is reclined, the lower deformable member deforms and the puller member applies a rearward pulling action which causes the seat portion to move and the front and rear deformable members to deform.