Box spring assembly
US4012801A · kind A · utility
7Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1975 |
| Grant date | Mar 22, 1977 |
| Priority date | — |
| Expiry date | Oct 10, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C23/043
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A box spring assembly for use as a foundation for a bed mattress. The assembly comprises a wooden frame, slats, spiral springs, corner coil springs, a border wire, and a welded wire top grid. The spiral springs extend parallel to the wooden slats and are secured at the bottom to the slats and at the top to the welded wire grid. Corner reinforcement and resiliency is provided by four corner coil springs, each of which is secured at the bottom to the wooden frame and at the top to the border wire and grid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.