Method of making pump impeller by lost-foam molding

Details Method of making pump impeller by lost-foam molding Method of making pump impeller by lost-foam molding

1989-02-16

1990-01-09

Gorski, Joseph M.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29DIG29, 164 34, 164 98, B21K 304

Patent

active

048918768

ABSTRACT:
A method of casting a water pump impeller which initially includes the formation of a foam pattern incorporating a former which remains as a part of the impeller, the foam pattern being used to form a mold in which the impeller is cast accompanied by the destruction of the foam pattern.

REFERENCES:
patent: 2793412 (1957-05-01), Lashbrook
patent: 3388749 (1968-06-01), Woods et al.
patent: 3734697 (1973-05-01), Sieghartner
patent: 3889737 (1975-06-01), Olsen
patent: 4375233 (1983-03-01), Rossmann et al.
patent: 4693292 (1987-09-01), Campbell

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