Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Wedge-securing means
Patent
1979-01-11
1981-03-24
Holko, Thomas J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Wedge-securing means
16 42T, 403260, 411 75, 411366, 411538, F16B 1304, A47B 9106, B60B 3300
Patent
active
042573084
ABSTRACT:
The invention concerns an anchoring device, more particularly a screw anchoring device, for insertion in an opening, e.g. in the end of a tube, to there form an anchor for a screw or bolt introduced into the opening. The device comprises an internally threaded locking body, preferably a conventional hexagonal nut, and a sleeve which is shaped, at least at one end thereof, to provide a tip portion, e.g. by being cut off obliquely. The device is inserted into the opening with the screw engaging the locking body and loosely accommodating the sleeve, whose tip portion is facing the body. In tightening the screw the locking body becomes wedged between the tip portion of the sleeve and an opposing portion of the wall of the opening. The union body-sleeve will then form a solidly fixed anchor for the screw, which itself can be loosened and tightened as desired.
REFERENCES:
patent: 737555 (1903-08-01), Dorn
patent: 1037277 (1912-09-01), Martin
patent: 1276708 (1918-08-01), Bair
patent: 1964427 (1934-06-01), Chandler
patent: 2051251 (1936-08-01), Epstein
patent: 2706499 (1955-04-01), Grable
patent: 2918840 (1959-12-01), Roesler
patent: 2931626 (1960-05-01), Beach et al.
patent: 3192822 (1965-07-01), Genter
patent: 3438300 (1969-04-01), Blum et al.
patent: 4073329 (1978-02-01), Hala
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