Hinged link mattress deck
US6678904B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1993 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Sep 3, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C17/225
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A support deck for a sofa bed having a plurality of support members is interconnected at joints such that when a force is applied to one side of the deck the deck will yield but when a force is applied to the opposite side, the deck will be relatively resilient. The support members consist of molded plastic links which are serially and pivotally interconnected to form the deck from a number of generally parallel longitudinal columns of links. Each link includes a planar upper surface for supporting the mattress and a reinforcing rib on the lower surface for added strength. Pivot pins are used to interconnect the links and a stop is provided on each end of the link to restrict the upward flexing or movement of the joined links. The links are economically and easily manufactured thereby providing a commercially competitive sofa bed without the detrimental aspects associated with prior sofa bed structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.