Tape measure with a self-regulating speed control mechanism
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United States of America Patent
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Issued Date -
Oct 30, 2008
app pub date -
Apr 2, 2008
filing date -
Apr 24, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed herein is a tape measure with a self-regulating speed control mechanism. The tape measure is capable of self-regulating its speed so that the retraction speed of a blade is not too fast or slow, and does not introduce any noise to the working environment in the case where the speed of the blade is not reduced. According to the present invention, a rotary brake part is elastically biased by a second elastic member, and is brought into contact with a stationary brake part only when the rotating speed of a bobbin is very fast.
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