Center reinforced mattress
US4369534A · kind A · utility
10Cited by
8References
3Claims
0Family size
Inventor
Key dates
| Filing date | Oct 20, 1980 |
| Grant date | Jan 25, 1983 |
| Priority date | — |
| Expiry date | Oct 20, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C27/0456
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A mattress spring assembly is disclosed having increased firmness in a preselected center area of the mattress. This increased firmness is achieved through use of a grid structure attached to the opposite sides of the mattress. This grid structure comprises plastic straps extending diametrically across the mattress in the center third area and overlaid by a preformed wire grid. The plastic straps and wire grid are attached to the preassembled spring core by conventional connectors such as metal clips and/or hog rings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.