Foundation unit, wire element for the foundation unit, and method of forming the foundation unit
US5497979A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1995 |
| Grant date | Mar 12, 1996 |
| Priority date | — |
| Expiry date | Mar 15, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C23/02
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A wire support member for a foundation unit, the resulting foundation unit, and a method of fabricating the foundation unit. The wire support member comprises a pair of parallel wire elements arranged in mirror image with a transverse link extending between and joining the wire elements. A dimple is formed in the top of each of the wire elements to form an engagement location to accommodate and seat a grid wire extending transverse to the wire support member. The foundation unit is comprised of a series of the wire support members installed in a flat grid wire top bearing structure and affixed to a rigid bottom substructure. The foundation unit is formed by inserting a wire support member at an oblique angle to the grid wire top bearing structure with the wire elements straddling a pair of longitudinal grid wires and with one wire element being located on one side of a transverse grid wire and with the other wire element being located on the other side of the transverse grid wire. The support member is then inserted and pivoted until its top is generally coextensive with the flat grid, and it is then rotated until the transverse grid wire is seated in the dimples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.