Chair seat tilt control
US5018787A · kind A · utility
27Cited by
17References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1990 |
| Grant date | May 28, 1991 |
| Priority date | — |
| Expiry date | Jun 20, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/4454
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A seat support mechanism for a tiltable chair having a rear tilt torque mechanism including interconnected torsion bars which are adjustable to vary the resilient restraining force which opposes rearward tilt of the seat when occupied, a pair of compression springs disposed between a seat support assembly and a base member to provide added resistance to rearward tilt, a link to limit rotation of the seat support assembly within predetermined limits and a release mechanism movable between a lock position, wherein rearward tilt is prohibited and a release position, wherein rearward tilt is permitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.