Encapsulated fastener and method and tooling for...

Details Encapsulated fastener and method and tooling for... Encapsulated fastener and method and tooling for...

2007-07-31

2007-07-31

Tolan, Ed (Department: 3725)

Threaded, headed fastener, or washer making: process and apparat

Process

Making internally threaded fastener, e.g., nut

C470S024000, C470S049000, C470S087000, C470S197000, C264S271100

Reexamination Certificate

active

11186605

ABSTRACT:
An encapsulated fastener includes a nut adapted to receive a bolt. The nut is encapsulated by an encapsulation including an extension, which includes a tube adapted for receiving a portion of the bolt and a flange adapted for engaging a face of the nut. The encapsulation extension is placed on the nut in an overmolding tool, wherein an encapsulation base is injection molded over a portion of the encapsulation extension. The encapsulation base encapsulates the nut, except for its bore, which is sealed off during the overmolding process by a spring-mounted mandrel. Alternative embodiments of the invention include tubes with different configurations for contacting the bolt whereby the tube or cylinder is reinforced. A method and tooling for manufacturing the encapsulated fastener are also provided.

REFERENCES:
patent: 3620119 (1971-11-01), King, Jr. et al.
patent: 4883399 (1989-11-01), MacLean
patent: 4887950 (1989-12-01), Sakayori et al.
patent: 4907929 (1990-03-01), Johnston, Jr.
patent: 4962806 (1990-10-01), Nottelmann et al.
patent: 5553984 (1996-09-01), Smith
patent: 6001294 (1999-12-01), Inaba et al.
patent: 6096256 (2000-08-01), Aretz
patent: 6641382 (2003-11-01), Mine

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