Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element – Having plastically flowable or deflectable end – e.g. – rivet,...
Patent
1993-08-19
1994-07-26
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, 295252, F16B 1906
Patent
active
053323491
ABSTRACT:
A flush rivet is configured for joining first and second overlapping structural members together, wherein the structural members define a bore comprising a cylindrical main bore, a cylindrical counterbore and a frustoconical intermediate bore between the counterbore and the main bore. The rivet includes a cylindrical shank dimensioned to be received the main bore, and having a distal end formed as a tail portion that projects distally from the main bore. The proximal end of the shank terminates in a head that includes a cylindrical section having a diameter that is slightly less than the diameter of the cylindrical counterbore, and a frustoconical section, between the shank and the cylindrical section, configured to seat in the intermediate bore. An end face on the proximal end of the head includes a central region having a first radius of curvature that is between 9 and 25 times the shank diameter, and a peripheral region having a second radius of curvature that is less than the first radius of curvature. Upon being installed in the bore, the rivet deforms in the following sequence: (1) the radial expansion of the shank so as to fill the main bore; (2) the substantially simultaneous (a) upsetting of the tail against the second structural member, and (b) deformation of the frustoconical head section to seat tightly against the surface of the intermediate bore; and (3) the radial expansion of the cylindrical head section to provide an interference fit between the cylindrical head section and the interior surface of the cylindrical counterbore.
REFERENCES:
patent: 3526032 (1970-09-01), Pipher
patent: 3927458 (1975-12-01), Speakman
patent: 3936205 (1976-02-01), Speakman
patent: 4000680 (1977-01-01), Briles
patent: 4004484 (1977-01-01), Speakman
patent: 4051592 (1977-10-01), Briles
patent: 4086839 (1978-05-01), Briles
patent: 4159666 (1979-07-01), Briles
patent: 4230016 (1980-10-01), Merrell
patent: 4425067 (1984-01-01), Krezak
patent: 4493141 (1985-01-01), Krezak
patent: 4609315 (1986-09-01), Briles
patent: 4695213 (1987-09-01), Sparling et al.
patent: 4712958 (1987-12-01), Sparling et al.
patent: 5026234 (1991-06-01), Luhm
LandOfFree
Flush rivet with compound radius domed head does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flush rivet with compound radius domed head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flush rivet with compound radius domed head will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1049997