Article of Furniture

• US 20110304183A1
• Filed: 05/26/2011
• Published: 12/15/2011
• Est. Priority Date: 06/10/2010
• Status: Active Grant

• Current Assignee: Knoll Incorporated (Millerknoll Incorporated)
• Original Assignee: Knoll Incorporated (Millerknoll Incorporated)
• Inventors: van Hekken, Hendrik R.
• Granted Patent: US 8,702,171 B2
• Time in Patent Office: Days
• US Class Current: 297/313
• CPC Class Codes: A47C 3/12 with shell-shape seat and back-rest unit, e.g. having arm rests
• CPC Class Codes: A47C 7/405 with double backrests
• CPC Class Codes: A47C 7/44 with elastically-mounted back-rest or backrest-seat unit in the base frame
• CPC Class Codes: A47C 7/445 with bar or leaf springs

Abstract

An article of furniture includes a base, a seat frame supported by the base, and a back frame attached to the seat frame. The back frame includes an upper portion and a lower portion. The upper portion is connected to the lower portion by at least one first elastomeric member such that the upper portion is moveable relative to the lower portion. The upper portion is moveable from an upright position to at least one reclined position. In some embodiments of the article of furniture, the at least one first elastomeric member is a strap composed of a polymeric material, such as, for example, a thermoplastic polyester elastomer or a polymeric material containing at least one elastomer. In some embodiments, the article of furniture may be designed as a chair, a lounge chair, or an office chair.

Claims

1. An article of furniture comprising:

a base;

a seat frame supported by the base; and

a back frame attached to the seat frame, the back frame comprising an upper portion and a lower portion, the upper portion connected to the lower portion by at least one first elastomeric member such that the upper portion is moveable relative to the lower portion, the upper portion being moveable from an upright position to a reclined position.

2. The article of furniture of claim 1 wherein the at least one first elastomeric member is configured such that the upper portion of the back frame is moveable from the upright position to the reclined position upon a first force acting on the upper portion to move the upper portion and is also configured to maintain that position after the first force is removed until a second force is applied to the upper portion of the back frame to move the upper portion to the upright position.

3. The article of furniture of claim 2 wherein the at least one first elastomeric member is configured to be flexed into a flexed position when the upper portion is moved to the reclined position and stay in the flexed position to maintain the upper portion of the back frame in that position.

4. The article of furniture of claim 1 wherein the upper portion of the back frame is comprised of a plurality of back support elements, each back support element interconnected to at least one other back support element by at least one second elastomeric member.

5. The article of furniture of claim 4 wherein the back frame has a front surface and a rear surface and the at least one second elastomeric member is comprised of a plurality of second elastomeric members positioned on the front surface of the upper portion and a plurality of second elastomeric members positioned on the rear surface of the back frame.

6. The article of furniture of claim 1 also comprising upholstery attached to the seat frame and upholstery attached to the back frame.

7. The article of furniture of claim 1 wherein the back frame is comprised of back support elements that are composed of a polymeric material.

8. The article of furniture of claim 1 wherein the at least one first elastomeric element is composed of a thermoplastic polyester elastomer.

9. The article of furniture of claim 1 wherein the base is comprised of a plurality of legs attached to the seat frame or pedestal attached to a gas spring, the gas spring attached to the seat frame.

10. The article of furniture of claim 1 wherein the article of furniture is a chair or a lounge chair.

11. An article of furniture comprising:

a base;

a seat frame attached to the base; and

a back frame, the back frame comprising an upper portion moveably attached to a lower portion by at least one first elongated elastomeric member, the lower portion of the back frame being attached to the seat frame;

the upper portion of the back frame comprising a plurality of back support elements, each back support element connected to at least one other back support element by at least one second elongated elastomeric member; and

wherein the upper portion of the back frame is configured to move from an upright position to a reclined position and wherein the at least one first elongated elastomeric member is configured to flex when the upper portion is moved to the reclined position, the upper back frame portion attached to the lower back frame portion such that the at least one first elongated elastomeric member does not bias the upper portion of the back frame to the upright position after the upper portion of the back frame has been moved to the reclined position.

12. The article of furniture of claim 11 wherein the back frame is configured such that the upper portion of the back frame is maintained in the at least one reclined position without the use of a lock mechanism configured to lock a position of the upper portion of the back frame.

13. The article of furniture of claim 11 wherein the upper portion of the back frame is moveable relative to the lower portion of the back frame and the lower portion of the back frame is attached to the seat frame such that the lower portion of the back frame is not moveable relative to the seat frame.

14. The article of furniture of claim 11 wherein the at least one first elongated elastomeric member is comprised of a first elastomeric strap and wherein the upper portion of the back frame is comprised of a plurality of back support elements;

the first elastomeric strap having a first side and a second side opposite the first side, the first and second sides being the longest sides of the first elastomeric strap, the first side of the first elastomeric strap being positioned to abut a portion of a rear surface of the back support elements of the upper portion and being positioned to abut a portion of a front surface of the lower portion of the back frame.

15. The article of furniture of claim 14 wherein the at least one first elastomeric member is also comprised of a plurality of additional first elastomeric straps, each additional first elastomeric strap extending from a respective back support element of the upper portion of the back frame to a portion of the lower portion of the back frame.

16. The article of furniture of claim 15 wherein the back frame has a front surface and a rear surface and the at least one second elastomeric member is comprised of a plurality of second elastomeric straps that are positioned on the rear surface of the back frame.

17. The article of furniture of claim 16 wherein the first elastomeric strap has a length and is aligned such that the length of the first elastomeric strap is transverse to a length of at least one of the second elastomeric straps.

18. The article of furniture of claim 11 wherein the base is comprised of a plurality of legs attached to the seat frame or the base is comprised of a pedestal attached to the seat frame.

19. The article of furniture of claim 18 wherein the pedestal is comprised of a gas spring that is attached to the seat frame.

20. The article of furniture of claim 11 wherein the seat frame is attached to the base such that the seat frame is at least one of rotatable relative to the base and tiltable relative to the base.