Spring construction
US4247089A · kind A · utility
16Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1978 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Oct 6, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/30
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A seat spring assembly having sinuous spring bands wherein the outermost band adjacent a side rail is provided supplemental resilient resistance to deflection by a combination of a trust member and a key member. As a result, a uniform spacing can be maintained between the bands across the entire seat frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.