A chair has a seat support (101), a seat portion (13), a back portion (15), and a supporting frame. The supporting frame is formed by a castored base (11), a height adjustment mechanism (17), and a main transom (21). The seat portion (13) is selectively moveable relative to the supporting frame, wit
A chair has a seat support (101), a seat portion (13), a back portion (15), and a supporting frame. The supporting frame is formed by a castored base (11), a height adjustment mechanism (17), and a main transom (21). The seat portion (13) is selectively moveable relative to the supporting frame, with the seat portion having a locked configuration and a released configuration. The back portion has a back frame (25) and a compliant cover (61). The back frame has hook features for receiving a portion of the compliant cover (61). The back portion (15) is reclinable relative to the supporting frame between an upright position and a reclined position. A recline mechanism has deformable members operatively connecting the seat portion and the supporting frame. A recline resistance mechanism is selectively engageable to resist movement of the back portion toward the reclined position.
대표청구항▼
1. A chair comprising: a main transom, a recline mechanism, and a seat portion;a back portion comprising a one-piece frame of unitary construction having an upper transverse member at an upper portion thereof, and a lower transverse member at a lower portion thereof, the upper transverse member bein
1. A chair comprising: a main transom, a recline mechanism, and a seat portion;a back portion comprising a one-piece frame of unitary construction having an upper transverse member at an upper portion thereof, and a lower transverse member at a lower portion thereof, the upper transverse member being positioned a greater vertical distance from the seat portion than the lower transverse member, the one-piece frame of unitary construction further comprising at least two spaced apart side members extending between and connecting to the upper transverse member and to the lower transverse member with the upper and lower transverse members extending between the two spaced apart side members, each side member having an inner edge and an outer edge, wherein the inner edges of the side members face towards each other and the outer edges of the side members face away from each other, each side member being generally L-shaped in cross-section and having a main frame portion comprising a front face that faces a seated occupant in use, and a flange positioned at an edge of the side member, the flange extending at least a major portion of the length of the side member and in a direction generally rearwardly from the front face of the main frame portion, wherein each flange is positioned at the outer edge of the respective side member, and wherein the flanges resist a majority of the loading applied to the side members of the frame by a seated occupant, wherein each side member comprises a plurality of attachment features comprising hook features on a forward facing surface of the side member, the hook features comprising an upright that extends in a forward direction from a portion of the side member and an overhang connected to the upright and spaced from said portion of the side member, wherein the overhang extends in a direction that is transverse to the forward direction away from the inner edge of the side member toward the outer edge of the side member, the one piece frame of unitary construction further comprising at least one support member extending from the lower portion thereof and mounted to at least one of the main transom, the recline mechanism, and the seat portion, to support the back portion in the chair; and a compliant support surface comprising a plurality of elongate vertical members and a plurality of elongate horizontal members extending between and supported by the side members, wherein at least some of the elongate vertical members are engaged with the hook features between the elongate horizontal members, the compliant support surface being disposed directly against the front face of the side members. 2. A chair as claimed in claim 1, wherein each flange extends in a direction generally perpendicularly from the front face of the main frame portion. 3. A chair as claimed in claim 1, wherein each flange has substantially parallel walls. 4. A Previously Presented chair as claimed in claim 1, wherein the main frame portion has substantially parallel walls. 5. A chair as claimed in claim 1, wherein the at least two side members are generally serpentine in shape. 6. A chair as claimed in claim 1, wherein the compliant support surface is a body contacting surface of the support. 7. A chair as claimed in claim 1, wherein the compliant support surface is held in tension between the side members, and is suspended between the side members. 8. A chair as claimed in claim 1, wherein the compliant support surface comprises an elastomeric material. 9. A chair as claimed in claim 1, wherein the flanges each have a length extending from the main frame portion in a direction away from the front face, and wherein the length of each flange is longer for a lower portion of the frame than for an upper portion of the frame. 10. A chair as claimed in claim 1, wherein the side members extend upwardly and forwardly from the lower transverse member, and then upwardly and rearwardly to form a forwardly convex lumbar support region, and wherein the side members then extend upwardly and forwardly to form a forwardly concave intermediate region, and wherein the side members then extend upwardly to the upper transverse member, and wherein the side members are resiliently flexible in the intermediate region to provide a flexing movement in a rearward direction of the upper portion relative to the lower portion. 11. A chair as claimed in claim 1, wherein the hook features are provided in the front face of each side member, and wherein a portion of the compliant support surface adjacent the hook features is substantially flush with the front face of the side member to form a substantially smooth contact surface for a seated occupant. 12. A chair comprising: a seat portion;a back portion comprising a one-piece frame of unitary construction having an upper transverse member at an upper portion thereof, and a lower transverse member at a lower portion thereof, the upper transverse member being positioned a greater vertical distance from the seat portion than the lower transverse member, the one-piece frame of unitary construction further comprising at least two spaced apart side members extending between and connecting to the upper transverse member and to the lower transverse member with the upper and lower transverse members extending between the two spaced apart side members, each side member having an inner edge and an outer edge, wherein the inner edges of the side members face towards each other and the outer edges of the side members face away from each other, each side member being generally L-shaped in cross-section and having a front face that faces a seated occupant in use, and a flange positioned at the outer edge of the side member, the flange extending at least a major portion of the length of the side member and in a direction generally rearwardly from the front face, wherein each side member comprises a plurality of attachment features comprising hook features on a forward facing surface of the side member, the hook features comprising an upright that extends in a forward direction from a portion of the side member and an overhang connected to the upright and spaced from said portion of the side member, wherein the overhang extends in a direction that is transverse to the forward direction away from the inner edge of the side member toward the outer edge of the side member; and a compliant support surface comprising a plurality of elongate vertical members and a plurality of elongate horizontal members extending between and supported by the side members, wherein at least some of the elongate vertical members are engaged with the hook features between the elongate horizontal members, the compliant support surface being disposed directly against the front face of the side members. 13. A chair comprising: a main transom, a recline mechanism, and a seat portion;a back portion comprising a one-piece frame of unitary construction having an upper transverse member at an upper portion thereof, and a lower transverse member at a lower portion thereof, the upper transverse member being positioned a greater vertical distance from the seat portion than the lower transverse member, and at least two spaced apart side members extending between and connected to the upper transverse member and to the lower transverse member with the upper and lower transverse members extending between the two spaced apart side members, each side member having an inner edge and an outer edge, wherein the inner edges of the side members face each other and the outer edges of the side members face away from each other, each side member being generally L-shaped in cross-section and having a front face that faces a seated occupant in use, and a flange positioned at the outer edge of the side member, the flange extending at least a major portion of the length of the side member and in a direction generally rearwardly from the front face, wherein each side member comprises a plurality of attachment features comprising hook features on a forward facing surface of the side member, the hook features comprising an upright that extends in a forward direction from a portion of the side member and an overhang connected to the upright and spaced from said portion of the side member, wherein the overhang extends in a direction that is transverse to the forward direction away from the inner edge of the side member toward the outer edge of the side member, the one-piece frame of unitary construction further comprising at least one support member extending from the lower portion thereof and mounted to at least one of the main transom, the recline mechanism, and the seat portion, to support the back portion in the chair; and a compliant support surface comprising a plurality of elongate vertical members and a plurality of elongate horizontal members extending between and attached to the side members, wherein at least some of the elongate vertical members are engaged with the hook features between the elongate horizontal members, the compliant support surface being disposed directly against the front face of the side members. 14. A chair as claimed in claim 12, wherein the hook features are provided in the front face of each side member, and wherein a portion of the compliant support surface adjacent the hook features is substantially flush with the front face of the side member to form a substantially smooth contact surface for a seated occupant.
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