Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Member or portion thereof located between substructure and...
Patent
1979-11-07
1981-09-29
Britts, Ramon S.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Member or portion thereof located between substructure and...
411533, F16B 3926
Patent
active
042920078
ABSTRACT:
A preassembled domed washer and fastener that can be snapped together after thread rolling and heat treatment. The inner periphery of the washer is reduced in thickness to provide flexibility and the fastener is provided with an interrupted annular ledge. The flexibility of the washer's inner periphery permits it to yield as it is pushed over the ledge and to snap back into engagement. The knurling or other interrupting of the ledge insures that large slivers from the case hardened fastener which cause handling problems and may reduce the amount of interference to the point the washer can fall off, are not formed.
REFERENCES:
patent: 1945005 (1934-01-01), Vacher
patent: 2192322 (1940-03-01), Mitchell
patent: 2303224 (1942-11-01), Olson
patent: 3037221 (1962-06-01), Lanius, Jr.
patent: 3163196 (1964-12-01), Hannemann
patent: 3628584 (1971-12-01), Gutshall
patent: 3856066 (1974-12-01), Reynolds
patent: 4179976 (1979-12-01), Sygnator
Britts Ramon S.
Buckman Thomas W.
Illinois Tool Works Inc.
Thomson Richard K.
LandOfFree
Fastener and washer assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fastener and washer assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fastener and washer assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1232082