Spring assembly
US4372546A · kind A · utility
4Cited by
2References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1981 |
| Grant date | Feb 8, 1983 |
| Priority date | — |
| Expiry date | Mar 23, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C23/32
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A spring assembly of the kind comprising a rigid base frame, a wire grid frame, a plurality of helically-coiled springs attached at one end to the base frame and at their other ends to the wire of the grid frame, said wires and ends of the coils being so structured as to enable detachably attaching the ends of the coils to the wires of the grid frame in overlapping locking engagement with the wires of the grid frame without the aid of wire clips or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.