Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Patent
1986-01-07
1987-08-25
Smith, Gary L.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
411 55, 411 74, 411 61, F16B 1306, F16B 1304
Patent
active
046889779
ABSTRACT:
An anchor having a shank, a reduced neck portion on the inner end and a tapering portion, and engagement means on the outer end and having a one-piece wedging collar arranged around the reduced neck portion, and having an overlapping portion extending partially up the tapered portion, and such collar having a leading and a trailing end and an axial slot extending part way therethrough from the leading end, near the tapered portion and terminating at a bridge portion, near the trailing end and at least two generally dome-shaped bosses formed in said collar, extending outwardly, and defining a maximum spacing there between greater than the diameter of the shaft shank of such anchor, the bosses being located between the leading end, and the bridge portion, on either side of the axial slot.
REFERENCES:
patent: 3107569 (1963-10-01), Lerick
patent: 3250170 (1966-05-01), Siegel
patent: 3766819 (1973-10-01), Giannuzzi
patent: 3855896 (1974-12-01), Kaufman
patent: 4100834 (1978-07-01), Harris
patent: 4195547 (1980-04-01), Giannuzzi
Smith Gary L.
Wilson Neill
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