Tool to aid in cutting circles in drywall
US5822871A · kind A · utility
4Cited by
10References
4Claims
0Family size
Inventor
Key dates
| Filing date | Nov 7, 1996 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Nov 7, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43L9/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool that aids in the cutting of a circle in drywall. The tool consists chiefly of a substantially flat main body including a plurality of grooves. The grooves are used to guide a cutting tool (e.g. a drywall knife) in a circular path. A fixing pin is attached at a first end of the main body, and a second raised end of the main body is curved or angled upward so that the end of the tool does not become embedded in the drywall during the cutting operation. The raised end of the tool may also be used to push the tool on its circular path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.