Spring unit
US4685659A · kind A · utility
10Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1985 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Jul 29, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C23/0438
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A bent wire spring unit for interposition between a grid frame and base frame comprising upper and lower attaching elements and intervening spaced, parallel, oppositely-facing supports comprising vertical lengths of wire and at the upper and lower ends of the vertical lengths of wire, V-shaped lengths of wire, the legs of which are connected, respectively, to the vertical lengths of wire and to the attaching elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.