Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Patent
1994-02-22
1995-02-28
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
411 41, 411183, F16B 1306, F16B 3704
Patent
active
053931793
ABSTRACT:
The anchoring system includes a generally cylindrical anchor having first and second longitudinal portions. The first longitudinal portion includes a female threaded interior cylindrical chamber. The second longitudinal portion includes a lower chamber having a bore smaller than the threaded chamber. A pair of radial slots extends longitudinally through the second portion of the anchor. An elongated pin, having a length which does not exceed the second longitudinal portion of the anchor,is driven into the lower cylindrical chamber of the anchor. The pin expands the outer cross sectional dimension of the lower portion of the anchor. A male threaded screw completes the anchoring system. The threaded surface of the screw is complementary to the female threaded interior chamber.
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patent: 4760843 (1988-08-01), Fischer et al.
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