Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Bulged by axially contracting ends
Patent
1981-09-11
1982-10-12
Britts, Ramon S.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Bulged by axially contracting ends
411 50, F16B 1306
Patent
active
043536735
ABSTRACT:
There is disclosed a wall anchor structure having a hollow body in which spaced ribs extend from a flanged portion at one end to a sleeve in which an axially movable nut element is captured. A bolt extends through the body from the flanged end to threadedly engage the nut. With the bolt head abutting the flange, the structure is struck or otherwise inserted through a dry wall or wallboard to bring the flange flush against the inner surface of the wall. The bolt, being slidable, is grasped at the head and pulled out to separate the head from the flange an amount permitted by the axial travel of the nut. This permits the jaws of an anchor operating tool to be inserted between the head and flange, and forced apart to forcibly separate the head and flange further, causing the ribs to deform so as to bite into and interlock with the wall material. The bolt is then threaded out of the nut and removed to permit a bracket or other support member for shelving or the like to be seated against the flange. The bolt is then reinserted to threadedly engage the nut, and turned until the bolt head seats against and secures the bracket firmly against the flange, and hence to the wall. Different sleeve and nut shapes are disclosed, as are different provisions for capturing the nut within the sleeve.
REFERENCES:
patent: 525222 (1894-08-01), Levering
patent: 2762252 (1956-09-01), Karitzky
patent: 3385156 (1968-05-01), Polos
Britts Ramon S.
Turner Perry E.
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