Nut casting method

Details Nut casting method Nut casting method

1990-11-05

1992-10-06

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264264, 264310, 264318, 264334, 264338, B29C 3902

Patent

active

051529483

ABSTRACT:
A method for casting polymer threads (32) in a nut cavity (14) complementary to the threads (44) of a casting screw (42) to minimize the formation of air pockets and air bubbles in the polymer threads. The cavity (14) of the nut (12) has a diameter larger than the diameter of the casting screw (42). The threads (32) of the nut (12) are formed in a polymer (30) which is dispensed into the nut cavity (14) and which cures around the threads (44) of the casting screw (42) after the screw is inserted into the cavity of the nut. The method for casting the threads (32) includes the steps of closing the bottom of the nut cavity (14), thereafter filling the nut cavity with polymer (30), and thereafter inserting the casting screw (42) slowly down into the polymer.

REFERENCES:
patent: 505778 (1893-09-01), Ronse
patent: 3001005 (1961-09-01), Sonnenberg
patent: 3061888 (1962-11-01), Wadham
patent: 3081644 (1963-03-01), Hudgens et al.
patent: 3670583 (1972-06-01), Leming
patent: 4776782 (1988-10-01), Murayama et al.
patent: 4790971 (1988-12-01), Brown et al.
patent: 4842508 (1989-06-01), Boskoviz
patent: 5066446 (1991-11-01), Phillips, II
patent: 5069076 (1991-12-01), Rosenthal

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