Tilt mechanism for chair having adjustable spring characteristics
US6176548A · kind A · utility
51Cited by
48References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1998 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Oct 23, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C3/026
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An office chair includes a tilt control mechanism which connects a seat assembly to a base. The tilt control mechanism defines a pivot connection between the seat assembly and the base whereby the seat assembly effectively pivots about a pivot point in any direction extending radially from the pivot point. The tilt control mechanism includes an annular elastomeric ring which resists multi-directional tilting and biases the seat assembly to a neutral position. The elastomeric ring has a contact area on which the tilting moment of the seat assembly acts which contact area can be selectively varied to adjust tilting resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.