Puller structure
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United States of America Patent
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Dec 22, 2015
Grant Date -
Sep 3, 2015
app pub date -
Mar 3, 2014
filing date -
Mar 3, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A pulling structure contains: a holding disc, an adjusting member, a screw rod set, and pulling hooks. The holding disc includes a threaded orifice for inserting the screw rod set, the threaded orifice has a wide screwing section and a narrow screwing section, the holding disc also includes plural connecting portions for connecting with the pulling hooks. The screw rod set includes an inner screw rod, an outer screw rod, and a hollow screw sleeve, and the outer screw is screwed with the wide screwing section, and the screw sleeve is screwed with the outer screw rod. The adjusting member is fitted in the outer screw rod and is defined between the screw sleeve and the holding disc, and a spring element abuts against the adjusting member and the holding disc. The adjusting member includes a plurality of coupling posts, and each pulling hook has an inclined guiding face.
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