SEAT SUSPENSION AND METHOD OF MANUFACTURE

• US 20100127551A1
• Filed: 01/27/2010
• Published: 05/27/2010
• Est. Priority Date: 04/28/2006
• Status: Active Grant

• Current Assignee: Steelcase Incorporated
• Original Assignee: Steelcase Incorporated
• Inventors: Heidmann, Kurt R., Peterson, Gordon J.
• Granted Patent: US 7,926,880 B2
• Time in Patent Office: Days
• US Class Current: 297/452.480
• CPC Class Codes: A47C 4/02 Dismountable chairs
• CPC Class Codes: A47C 5/12 of plastics, with or without reinforcement
• CPC Class Codes: A47C 7/006 with castors
• CPC Class Codes: A47C 7/16 Seats made of wooden, plastics, or metal sheet material; Panel seats
• CPC Class Codes: A47C 7/18 having foamed material included in cushioning part foamed material mattresses A47C27/14
• CPC Class Codes: A47C 7/285 with metal strips or webs
• CPC Class Codes: A47C 7/32 with tensioned cords, e.g. of elastic type, in a flat plane
• CPC Class Codes: A47C 7/42 of detachable or loose type
• CPC Class Codes: A47C 7/54 Supports for the arms

Abstract

A seating construction includes a perimeter frame defining an open area, and a one-piece molded seating component supported on the frame. The seating component includes a plurality of integrally-formed flexible slats defining a support surface over the open area. Resilient wires are coupled to the slats to resiliently support the slats when flexed. The component can be handled as a unit for assembly, and is retained by connecting rods that extend along the side section of the frame, with the slats each rotatably engaging mating bearing structure on the frame. A flex-limiting member in a center of the frame limits the resilient supports to a maximum deflected condition. Tabs on the molded component interconnect the slats and permit one-piece molding, but are either flexible or breakable to permit independent flexing of the slats. Methods related to the above are also disclosed.

Claims

1. A seating construction comprising:

a frame defining an open area and including a plurality of discrete first structures positioned along opposite sides of the open area, said plurality of first structures being spaced apart to form gaps therebetween;

a plurality of elongated flexible slats extending across the frame between the opposite sides and over the open area, each slat having ends with second structures thereon, each said second structure being configured to align with a selected one of said first structures and including protruding portions which extend into the gaps on either side of the selected one of the first structures;

said first structures and the protruding portions of the second structures include passages that at least partially align; and

a connector being positioned in the aligned portion of the passages to secure the first structures and protruding portions in position.

2. The seating construction defined in claim 1, including a plurality of resilient wires extending across the open area and supported by the slats.

3. The seating construction defined in claim 2, wherein at least one of the resilient wires is coupled to each of the slats.

4. The seating construction defined in claim 1, including tabs integral with and interconnecting adjacent ones of the slats, the tabs being flexible and deformable and positioned to deform when individual ones of the slats are flexed.

5. The seating construction defined in claim 1, wherein the first and second structures are integrally formed on the frame and the slats, respectively.

6. The seating construction defined in claim 1, including a cushion on several of the slats.

7. The seating construction defined in claim 1, including a flex limiting member positioned under at least some of the slats for limiting deformation of the slats to a maximum deflected position.

8. The seating construction defined in claim 1, wherein the frame includes a floor panel and perimeter supporting sections that define with the opposite sides a pan shape.

9. The seating construction defined in claim 8, including a flex limiting member positioned between the floor panel and at least some of the slats.

10. The seating construction defined in claim 1, wherein the frame and the plurality of slats are each molded recyclable polymer.

17. The seating unit defined in claim 1, including tabs integral with and interconnecting adjacent ones of the slats, the tabs being flexible and deformable and positioned to deform when individual ones of the slats are flexed.

11. A seating construction comprising:

a base frame;

a seat frame with side sections supported on the base frame and defining an open area between the side sections; and

a one-piece molded component made separate from the seat frame and operably supported on the seat frame, the component including a plurality of integrally-formed flexible slats interconnected by a plurality of deformable tabs, the slats including ends supported on the side sections and mechanically attached thereto so as to define a support surface over the open area with individual slats being configured to individually bend and deflect, the tabs being deformable to permit the slats to individually flex.

12. The seating construction defined in claim 11, wherein the slats are mechanically attached to the side sections at a plurality of discrete locations.

13. A seating unit comprising:

a base supporting a frame;

the frame defining an open area and including a plurality of discrete first structures positioned along opposite sides of the open area, said plurality of first structures spaced apart to form gaps therebetween;

a plurality of elongated flexible slats extending across the frame between the opposite sides and over the open area, each slat having ends with second structures thereon, each said second structure being configured to align with a selected one of said first structures and including protruding portions which extend into the gaps on either side of the selected one of the first structures;

said first structures and the protruding portions of the second structures include passages that at least partially align; and

a connector being positioned in the aligned portion of the passages to secure the first structures and protruding portions in position.

14. The seating unit defined in claim 13, wherein the frame includes a floor panel and perimeter supporting sections that define with the opposite sides a pan shape and wherein a flex-limiting member is positioned in the open area between the floor panel and the resilient supports, the flex-limiting member shaped to simultaneously engage several of the resilient supports to limit movement of the resilient supports to a maximum deflected condition.

15. The seating unit defined in claim 13, including a plurality of resilient wires extending across the open area and supported by the slats.

16. The seating unit defined in claim 15, wherein at least one of the resilient wires is coupled to each of the slats.

18. The seating unit defined in claim 13, wherein the frame and the first structures are a unitary construction and each said slat and its respective said second structures are a unitary construction.

19. The seating unit defined in claim 13, including a cover positioned over the resilient supports.

20. The seating unit defined in claim 19, further including a cushion positioned between the resilient supports and the cover.