Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Patent
1993-02-25
1994-12-06
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
411 60, F16B 1306
Patent
active
053704851
ABSTRACT:
A body member having a first fastener therein and a cover having a through hole therein removably secured by a screw member. The screw member has a head at one end, a body portion and means for engaging the said first fastener. The outer diameter of the body portion is less than the outer diameter of the head and the outer diameter of the head is slightly less than the inner diameter of the through hole. An engaging member composed of an elastic body is mounted on the body portion. The engaging member has a free diameter less than the inner diameter of the through hole. When the screw member is partially screwed into the first fastener on the body member, the cover will pass over the screw member and can be secured to the body member by tightening the screw member. As the screw member is tightened, the engaging member expands in the radius direction and engages the outer circumferential edge or the circumferential inner wall of the through hole. The screw member has an engaging section which has an outer diameter less than the inner diameter of the through hole but larger than the inner diameter of the engaging member which prevents the engaging member from dropping off the screw member.
REFERENCES:
patent: 3973789 (1976-08-01), Kunz et al.
patent: 4560311 (1985-12-01), Herb et al.
patent: 4560312 (1985-12-01), Grady
patent: 5284409 (1994-02-01), Miyanaga
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