Variable back adjuster for chairs
US4494795A · kind A · utility
45Cited by
18References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1982 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | May 6, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C1/03274
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An adjustor for chairs with tilting backs and the like, comprises a threaded spindle connected with the chair back, and a gear wheel threadedly mounted on the spindle. The gear wheel is retained in a housing attached to a relatively stationary portion of the chair, such that when the chair back is tilted, the spindle rotates the gear wheel in the housing. A pawl is shifted into and out of engagement with the gear wheel to selectively lock the chair back in a wide variety of different angular positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.