Permanent core plumbing product

Details Permanent core plumbing product Permanent core plumbing product

1995-04-24

1996-12-03

Michalsky, Gerald A.

Fluid handling

Faucets and spouts

4678, 137375, E03C 104

Patent

active

055798080

ABSTRACT:
A plumbing part is made from a permanent core and a body cast around the core. The core is formed of a material which meets the retirements as to the permitted leachability of lead and/or other undesirable materials from the core into water flowing through it. The core material has a melting point preferably at least 200.degree. F. above that of the cast body. The core also has a coefficient of expansion which is equal to or less than that of the material fuming the cast body.

REFERENCES:
patent: 1890357 (1932-12-01), Barber
patent: 1981825 (1934-11-01), Miller
patent: 2367809 (1945-01-01), Stein et al.
patent: 2752129 (1956-06-01), Modine
patent: 3511283 (1970-05-01), Iannone
patent: 3568723 (1971-03-01), Sowards
patent: 3590876 (1971-07-01), Young
patent: 4513769 (1985-04-01), Purcell
patent: 4884596 (1989-12-01), Byers et al.
patent: 5297587 (1994-03-01), Johnson

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