Fastening device with circumferential ribs and method for manufa

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Lap bolt or fastener

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Details

411366, 411510, 411908, 411947, F16B 1900

Patent

active

050006371

ABSTRACT:
A fastening device uses a ribbed rivet to secure two materials together. The ribs on the rivet should have a height no greater than 0.005 inches on most plastics and be of a close proximity. This rivet can be pushed directly into, or pulled directly out of, a ribbed receiving bore without fear of stripping the threaded ribs. The rivet can be manufactured in a two-piece injection plastic mold in which the rivet is fully formed in the lower half of the mold. Because of the height and proximity of the ribs, the rivet can be removed from the mold without stripping the threaded ribs. Furthermore, the rivet can be formed in the same injection molding operation used to manufacture the receiving bore into which it is to be inserted.

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patent: 4761860 (1988-08-01), Krauss
patent: 4932818 (1990-06-01), Garwood

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