发明授权
US5210956A Retractable tape measure 失效
伸缩卷尺

Retractable tape measure
摘要:
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.
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