Backrest-tilting device
US7726740B2 · kind B2 · utility
51Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2005 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Aug 27, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C1/03294
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A back rest tilting device in a reclining chair formed of fewer parts. A force promoting unit energizes a back rest in an upright direction. A rotating force promoting unit with rubber torsion springs includes a laterally extending pivot shaft rotated integrally with the back rest and an elastic body filled between an outer tube locked to a support body coaxially with the core and the pivot shaft so that the elastic body is elastically deformed when the pivot shaft is rotated about the center axis of the outer tube to impart a returning rotating force to the pivot shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.