Apparatus for producing fastener assembly with molded...

Details Apparatus for producing fastener assembly with molded... Apparatus for producing fastener assembly with molded...

2007-12-11

2007-12-11

Heitbrink, Jill L. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C249S059000, C264S328100, C425S418000, C425S577000, C425SDIG058

Reexamination Certificate

active

10279411

ABSTRACT:
A mold for producing a product with internal flutes is provided. The mold includes a mold body that defines a cavity and a shaft in proximity to the cavity. A pin assembly is receivably engaged in the shaft of the mold body. The pin assembly includes a pin with a grooved portion that has at least one helically shaped groove, a sleeve surroundingly disposed about a portion of the pin, and means to allow rotation of the pin. A gap is defined in between a portion of the walls of the shaft of the mold body and the grooved portion of the pin and the gap is partially terminated by a portion of the sleeve. A method of molding is also provided.

REFERENCES:
patent: 3537676 (1970-11-01), Miller
patent: 3664212 (1972-05-01), Hehl
patent: 3694127 (1972-09-01), Takahashi et al.
patent: 3737268 (1973-06-01), Ryder
patent: 4340352 (1982-07-01), Hayberg
patent: 5558887 (1996-09-01), Skufca et al.
patent: 6156265 (2000-12-01), Sugimoto
patent: 6305563 (2001-10-01), Elliott
patent: 6599115 (2003-07-01), Chalcraft et al.

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