Retractable tape measure
US5210956A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1992 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Mar 3, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2003/1015
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A retractable tape measure assembly is disclosed which includes a housing, a coiled tape located in the housing, which tape is adapted to be extended from and retracted into the housing. The coiled tape has a free end with a pull tab secured thereto. A resilient bumper is mounted in the housing in position to contact the pull tab when the tape is retracted. The bumper includes a front surface for contacting the pull tab and a tape support surface behind the front surface extending generally perpendicular thereto. An integral spring is located behind the tape support surface and engages a stop in the housing so that when the tape is retracted the spring is compressed to absorb the stress in the tape. The casing also includes a tape lock mechanism for locking the tape in an extended position. The pull tab also has a rear surface on which a high friction element is placed to help hold the pull tab in position when the tape is extended and engaged with a work piece for measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.