Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element – Having plastically flowable or deflectable end – e.g. – rivet,...
Patent
1995-04-13
1996-12-03
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element
Having plastically flowable or deflectable end, e.g., rivet,...
411504, 295241, F16B 1906, B21D 3900
Patent
active
055802028
ABSTRACT:
A rivet which has a flat crown that extends from the head of a rivet. The rivet is typically installed into a workpiece hole which has a countersink. The head has a frusto-conical section that extends from a rivet shank and a cylindrical section that extends from the frusto-conical section. The frusto-conical section sits within a countersink of the workpiece hole. Extending from a top surface of the head is a crown which has a flat end face and a tapered portion that extends from the end face to the top head surface. The crown has a diameter that is smaller than the outer diameter of the head. The flat end face is approximately 0.5 times the diameter of the shank. The crown has a diameter that is approximately 1.25 times the shank diameter. The rivet is deformed by a hammer and an anvil so that the crown becomes flat and the rivet fills the hole of the workpiece. The crown maintains essentially the same diameter during the rivet deformation process so that the deformation forces are transmitted primarily through the shank of the rivet. The rivet head completely fills the workpiece hole without requiring any post-installation shaving process.
REFERENCES:
patent: 3927458 (1975-12-01), Speakman
patent: 4000680 (1977-01-01), Briles
patent: 4004484 (1977-01-01), Speakman
patent: 5273386 (1993-12-01), Luhm
patent: 5332349 (1994-07-01), Gerwin
Allfast Fastening Systems, Inc.
Wilson Neill R.
LandOfFree
Crowned solid rivet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Crowned solid rivet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crowned solid rivet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-780826