Door handle
US4732417A · kind A · utility
17Cited by
6References
1Claims
0Family size
Inventor
Key dates
| Filing date | Nov 6, 1986 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | Nov 6, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/57
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A C-shaped door handle for replacing a conventional rotatable doorknob has mounting brackets at each end for attaching to a flat surface and a drive shaft adapted to engage a conventional latch-operating mechanism. The handle has an internal pivoted grip lever actuated by pulling the handle. Motion from the grip lever is transmitted to the rotary drive shaft by a rack and pinion transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.