Patent
1977-05-13
1978-01-31
Combs, E. M.
10 10P, 10 72R, 10 86A, B21K 2700, B21K 164, B21D 5324
Patent
active
040707245
ABSTRACT:
A self-locking internally threaded fastener in which the self-locking characteristic is derived from a ring-like plastic patch having a circumferential extent of greater than 180.degree. adhered to the thread-defining surface of the fastener. A method for making the fastener includes seating a fastener upon a pin having a configuration which establishes a cavity between the pin and the fastener, placing an initial deposit of plastic powder in the cavity and then re-distributing the plastic powder, as by blowing, to form a ring-like deposit which can be heated until fused to establish the desired ring-like patch. An apparatus includes a pin having a seating shoulder and a frusto-conical tapered portion for receiving the fastener and establishing the cavity.
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Amerace Corporation
Bender S. Michael
Combs E. M.
Craig Richard A.
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