Powered hand-held tool with unitary sub-assembly mounted by the tool housing sections
US4081704A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1976 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Feb 13, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/95
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cordless electric drill has a housing formed by two clam-shell sections secured together by a plurality of fasteners. These housing sections define a closed motor and gear compartment which receives a sub-assembly, the latter including a generally U-shaped gear box frame mounting a small D.C. electric motor, a plurality of reduction gears and a spindle. A drill chuck is mounted on the spindle. The sub-assembly and the housing sections include co-operating mounting formations, defined in part by projections and cavities, which mounting formations serve to mount the sub-assembly in place in response to securing the clam-shell housing sections together by the aforesaid fasteners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.