Structure tape rule
US6964114B1 · kind B1 · utility
11Cited by
9References
1Claims
0Family size
Inventor
Key dates
| Filing date | Jun 29, 2004 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | Jun 29, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2003/1023
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved structure tape rule in which the blade spool has space at one side of one-piece construction for containing the coiled spring, enabling the blade spool to accommodate the winding of a ruler blade that is approximately two to three times longer than a blade spool in a same diameter sized spatial area and, furthermore, the rewinding of the ruler blade is impelled by spring torque to thereby enhance tape ruler utility and performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.