Overload-preventing device for winch
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United States of America Patent
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-
Jun 17, 2003
Grant Date -
Oct 24, 2002
app pub date -
Apr 23, 2001
filing date -
Apr 23, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides an overload-preventing device for a winch, by which even an overload is caused to descend. The overload-preventing device includes an accommodation hole that is formed in a rotation drive member and is open in the contact plane with a pressing drive member and accommodates a movable piece pressing member and a movable piece. The movable piece is pressed to the side of the pressing drive member by the movable piece pressing member. An engagement groove having a depth in which approx. half of the movable piece can be driven is formed at a part of the contact plane of the pressing drive member. The unwinding side of the engagement groove is formed at the fitting plane while the winding-up side thereof is formed on the inclined surface.
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