Coupler for connecting lines
US11014400B2 · kind B2 · utility
1Cited by
18References
19Claims
0Family size
Inventors
Key dates
| Filing date | Jul 31, 2019 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Aug 15, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B3/1056
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A coupling device for connecting first and second chalk lines includes a generally planar body portion having a first end, a second end and opposed sides edges, an aperture formed in the body portion adjacent to the first end for attaching a free end of a first chalk line to the coupling device, and a spring hook connected to a first of the opposed side edges and being configured to receive a second chalk line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.