High-speed power tool
US4242839A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1978 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Oct 23, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B23/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A high-speed power tool has a housing for an electromotor, and a tool casing mounted on the motor housing. A finishing plate is mounted on the tool casing for movement relative thereto. The motor drives a transmission which includes a crank member having an eccentric portion connected to the finishing plate for imparting oscillatory motion to the latter. The arrangement for connecting the eccentric portion of the crank member to the finishing plate includes a bearing mounted on the eccentric portion of the crank member, and a sleeve surrounding the bearing and detachably connected to the finishing plate. Screws which are accessible from the exterior of the tool casing and of the finishing plate connect the sleeve to the finishing plate. The transmission includes two pulleys mounted on the output shaft of the electromotor and on the crank member, respectively, the pulley on the output shaft being bipartite, the two parts of the pulley being spaced by an interchangeable washer and urged toward one another by a screw so that tension of a V-belt trained about the pulleys can be adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.