Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Having securing element projecting through aperture in sleeve
Patent
1984-01-17
1986-02-25
Holko, Thomas J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Having securing element projecting through aperture in sleeve
411 57, 411 60, F16B 1306
Patent
active
045727082
ABSTRACT:
An expansible wall plug consisting of a slotted metal sleeve which engages a portion of its length into the article to be fastened, and an expansible portion which may be expanded by driving in a fastening screw. The expansible wall plug may be expanded using a fastening screw having a wood screw thread, because the expansible body consists of a plastic material and is provided with a tapered cavity and is slotted over a portion of its length. At least a portion of the length of the expansible body is inserted into the expansible portion of the metal sleeve, and is locked in a position in which the slot plane of the expansible body is aligned with the slot plane of the metal sleeve by way of projections on the periphery of the expansible body engaging recesses on the periphery of the metal sleeve.
REFERENCES:
patent: 983451 (1911-02-01), Kennedy
patent: 1021794 (1912-04-01), Pleister
patent: 1087299 (1914-02-01), Kennedy
patent: 1138219 (1915-05-01), Hottenroth
patent: 1921794 (1933-08-01), Tomkinson
patent: 2287395 (1942-06-01), Reynolds
patent: 4416048 (1983-11-01), Otte
Holko Thomas J.
Striker Michael J.
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