Lift chair
US4909569A · kind A · utility
13Cited by
8References
4Claims
0Family size
Inventor
Key dates
| Filing date | Jun 30, 1989 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Jun 30, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S297/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is a base for a recliner lift chair in which the push links and flying links are dimensioned to provide constant velocity motion to the seat and back without dwell during movement in the lifting and reclining modes. The base is provided with a flexible tie to afford shifting of the base members to accommodate uneven floors and maintain four-point contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.