Lay out line
US7469482B2 · kind B2 · utility
7Cited by
21References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2007 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Jun 15, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB44D3/38
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A chalk line apparatus for marking regularly spaced locations. The apparatus comprises a casing for powdered chalk containing a rotatable reel, line wound on said reel, and an exit opening for the line at one end of the holder. The line has evenly spaced short segments disposed thereon so that when the line is tensioned to a predetermined level of about 10-15 lbs, the segments reside at precisely placed predetermined intervals. When the line is snapped, chalk marks are placed on the wall surface in a pattern that identifies the appropriate locations of underlying wall studs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.