Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Member preassembled with substructure at through-passage or...
Patent
1996-08-16
1998-04-21
Meyers, Steven N.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Member preassembled with substructure at through-passage or...
411353, F16B 3922
Patent
active
057411018
ABSTRACT:
A fastener for attaching a first object to the outside of a second object having a hole and a normally inaccessible inner surface. The fastener generally comprises a head portion, a resilient washer disposed in a stepped or double recess in the head portion, and a fastening section connected to the head portion. The resilient washer has a maximum diameter that is substantially larger than the hole, and a contoured or tapered outer surface adapted to engage, be compressed in, and slide through the hole in only one direction. When the fastener is pressed through the hole and the head portion emerges on the other side, the resilient washer springs back to its decompressed size and securely retains the fastener in the second object. Additionally, the washer has a flange that helps retain the washer in the head portion and acts to evenly distribute on the washer any forces exerted to remove a fully inserted fastener. When removal forces are exerted on the fastener, the flange prevents the washer from twisting, being deformed, and popping out of the head portion.
REFERENCES:
patent: 2877818 (1959-03-01), Johnson
patent: 3503431 (1970-03-01), Villa
patent: 3782437 (1974-01-01), Seckerson
patent: 4324517 (1982-04-01), Dey
patent: 4815908 (1989-03-01), Duran
patent: 5413441 (1995-05-01), Heminger
patent: 5590900 (1997-01-01), Duran
Estremsky Gary
Meyers Steven N.
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