Metal-cutting saw bow frame including a device for tensioning of the blade
US6079109A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 1998 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | May 8, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23D51/125
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The frame of a metal-cutting saw of the one-piece, hacksaw type includes a bow (6) extended at its rear end by a pistol grip (3) and a protective branch (7) and at its front end by a branch (9) which at its end includes an attachment stud (14) for receiving one of the two ends of a blade (2). The pistol grip (3) has a blade-tensioning device comprised of a blade-tension adjustment system (4) including a lever fixed by an articulation pin (18) to an articulation stirrup piece (8) which extends into the rear part of the protective branch (7). The articulation pin (18) constitutes an axis about which the lever (5) can rotate. The blade-tension adjustment system (4) further includes a blade support (12) which receives the other end of the blade (2) and an opening (12a) for allowing the articulation pin (18) to pass through. A threaded rod (15) is connected to the blade support (12), and provides for articulation of the lever (5) about an articulation pin (17). The articulation pin (17) has a smooth hole for receiving the threaded rod (15), and receives an adjustable thumbwheel (16) which bears against the articulation pin (17).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.