Convertible portable electric tool
US3959878A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1975 |
| Grant date | Jun 1, 1976 |
| Priority date | — |
| Expiry date | Apr 2, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B15/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention teaches a convertible portable electric tool having a common power housing and different operating tool output pieces which can be releasably secured to said power housing without the need of any tools. Each of the tool output pieces has a stationary element and a movable element supported by the stationary element. The power housing has an exposed drive element which can cooperate with and drive the movable element when the statonary element is properly positioned relative to the housing. The stationary element in turn is sized to cooperate with the housing to cover the exposed drive element and be accurately positioned and held in place against the housing. Flexible fingers cantilevered integrally from the housing have free end flexture parallel to the stationary element, and further have projections on the finger ends that interlock with the positioned stationary element to hold it operatively in place relative to the housing. Exposed grip areas on the flexible fingers allow for manually flexing of the fingers to lock and release the tool output piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.