Builder's level with hand-grip feature
US5940978A · kind A · utility
34Cited by
21References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1997 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Sep 10, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C9/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The improved builder's level is used by carpenters, masons and the like for determining parallelism or perpendicularity with respect to a horizontal plane. The level has opposed depressed channels extending along its length, thereby permitting the level to be more securely gripped. The body of the level has interior ridges and an interior web for reinforcement and to properly position liquid-containing vials in such body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.