Stair chair
US6644675B2 · kind B2 · utility
19Cited by
57References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Jul 24, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S280/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A stair chair is provided and includes a seat 30, a backrest 34, a foot rest 32, upper handles 84 and lower handles 82. Three wheels 62 are mounted at each side of the chair. The wheels are pivotal about their own axis and also a common axis. Rotation about the common axis can be braked or locked. The chair can be lowered downstairs with a person pulling on the upper handle 84 and another person pushing on the lower handles 82 in order to slow movement of the chair down the stairs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.