Pump impellers and manufacture thereof by co-injection molding

Details Pump impellers and manufacture thereof by co-injection molding Pump impellers and manufacture thereof by co-injection molding

1983-04-12

1985-04-23

Yuen, Henry C.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

F01D 514

Patent

active

045127204

ABSTRACT:
A pump inpeller and a method for its manufacture wherein the impeller is made of two different synthetic plastics using a co-injection molding process. One plastic, used to fabricate a core section of the impeller, is a rigid thermoplastic material. The other plastic, used to fabricate the vanes section, is a thermoplastic elastomer. The latter is injected after the rigid thermoplastic material.

REFERENCES:
patent: 2882077 (1959-04-01), Marsh
patent: 3054355 (1962-09-01), Neely
patent: 3256939 (1966-06-01), Novak
patent: 3303791 (1967-02-01), Doble
patent: 3307634 (1967-03-01), Bihlmire
patent: 4293182 (1981-10-01), Schwartz
patent: 4362471 (1982-12-01), Langer et al.

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