Crank handle apparatus
US4791828A · kind A · utility
4Cited by
6References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1988 |
| Grant date | Dec 20, 1988 |
| Priority date | — |
| Expiry date | Mar 7, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32983
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved crank handle apparatus including a rod with radial protrusions near its distal end and a rotatable handle having a passageway receiving the rod, the passageway including a proximal portion with keyways therealong for protrusion passage during assembly, a middle retaining portion ending the keyways, and a distal portion of larger cross-section to accommodate the protrusions in any rotational position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.