Claims
- 1. A seat spring assembly for an upholstered furniture seat, comprising:
- a. a seat frame including a front rail, a back rail, and a side rail,
- b. an outermost sinuous spring band connected to said front and back rails and extending therebetween in substantially parallel relationship with said side rail,
- c. said band defining an arc in extending between said front and back rails,
- d. a normally straight, stiff wire span member extending longitudinally of said outermost band, substantially coextensive therewith between said front and back rails, and subtending said arc,
- e. one end of said wire span member being fastened to one of said band and one of said front and back rails at a point adjacent said one rail so that said one end of said wire member cannot move longitudinally relative to said fastening point,
- f. the opposite end of said wire span member being fastened to one of said band and the other of said front and back rails at a point adjacent said other rail, and
- g. vertically elongated key means disposed between said wire span member and said outermost band and fastened rigidly to both,
- h. said span member and key means being effective to permit a controlled, limited deflection of said outermost band under normal load.
- 2. The seat spring assembly of claim 1 further characterized in that:
- a. said wire span member passes diagonally under said outermost band as it extends longitudinally of the band between its fastened opposite ends,
- b. said key means being fastened to said wire member at approximately at midpoint.
- 3. The seat spring assembly of claim 2 further characterized in that:
- a. both said wire span member and said key means are fabricated of paper covered wire.
- 4. The seat spring assembly of claim 2 further characterized in that:
- a. said key means comprises an irregularly shaped piece of paper covered wire,
- b. said piece of paper covered wire having opposite free ends clamped to said wire span member and a transverse segment intermediate its ends clamped to said outermost spring band.
- 5. The seat spring assembly of claim 2 further characterized in that:
- a. said key means comprises an irrgularly shaped piece of paper covered wire,
- b. said piece of paper covered wire having opposite free ends clamped to said outermost spring band and an intermediate segment clamped to said wire span member.
- 6. The seat spring assembly of claim 2 further characterized in that:
- a. said key means comprises a segment of said wire span member formed upwardly and engaging said outermost spring band.
- 7. The seat spring assembly of claim 2 further characterized in that:
- a. said key means comprises at least two pieces of paper covered wire,
- b. each of said paper covered wire pieces being fastened adjacent end to said one outermost spring band and adjacent the other end to said wire span member.
- 8. The seat spring assembly of claim 1 further characterized in that:
- a. said wire span member is fastened to said front rail and said back rail at its opposite ends.
- 9. The seat spring assembly of claim 8 further characterized in that:
- a. said wire span member is fastened to said back rail through helical spring means having a high spring force.
- 10. The seat spring assembly of claim 1 further characterized in that:
- a. said wire span member is fastened to said outermost band at its opposite ends.
RELATED APPLICATION
This application is a continuation-in-part of application Ser. No. 730,631, filed Oct. 7, 1976, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (3)
Number |
Date |
Country |
157777 |
Jan 1953 |
AUX |
496385 |
Nov 1927 |
DE2 |
1312613 |
Nov 1962 |
FRX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
730631 |
Oct 1976 |
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