Nut casting apparatus

Details Nut casting apparatus Nut casting apparatus

1991-11-01

1993-06-29

Woo, Jay H.

Static molds

Forming helical or threaded product

249 63, 249175, B29D 100

Patent

active

052231585

ABSTRACT:
An apparatus 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 nut casting apparatus (10) includes support member (54) for closing the bottom of the cavity (14), and for containing the polymer (30) therein.

REFERENCES:
patent: 505778 (1893-09-01), Rouse
patent: 1227680 (1917-05-01), Segre
patent: 1916692 (1933-07-01), Scribner
patent: 1944571 (1934-01-01), Rahm
patent: 1959612 (1932-05-01), Burke
patent: 2133019 (1938-10-01), Campbell
patent: 3054145 (1962-09-01), Helpa
patent: 3387323 (1968-06-01), Wyllie et al.
patent: 4622198 (1986-11-01), Gallusser et al.

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