Universal joint structure for a tool
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United States of America Patent
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Feb 17, 2015
Grant Date -
Jan 1, 2015
app pub date -
Jun 30, 2013
filing date -
Jun 30, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A universal joint structure for a tool contains an operating rod, a fitting sleeve, and a retaining member. The operating rod includes a universal joint formed on one end thereof, the universal joint is formed in a polygonal sphere shape, the fitting sleeve includes a polygonal locking groove defined thereon for fitting the universal joint, the fitting sleeve also includes a circular recess arranged adjacent to an opening of the locking groove and retaining with the retaining member. The retaining member is a C-retaining ring and includes a tilted guiding face defined around one surface thereof, and wherein one end of the titled face away from the circular recess is larger than another end of the titled guiding face adjacent to the circular recess so that when the universal joint is fitted into the locking groove, the titled guiding face retains with the universal joint of the operating rod.
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