Pumps – Processes
Patent
1977-01-25
1978-10-17
Freeh, William L.
Pumps
Processes
417490, 164 97, 164312, F04B 3910, F04B 3912, C21D 106
Patent
active
041206134
ABSTRACT:
To prevent the formation of deposits of lead dross and the like due to oxidation of the molten lead, at least a portion of elements defining the pump chamber, for example the cylinder, and the piston are made as an iron casting which has been subjected to a salt bath nitriding treatment to produce a hard surface layer with excellent resistance against the deposition of lead dross.
REFERENCES:
patent: 1133270 (1915-03-01), Dale
patent: 2145553 (1939-01-01), Morin
patent: 3022204 (1962-02-01), Muller
patent: 3093087 (1963-06-01), Hansen
patent: 3208885 (1965-09-01), Muller
patent: 3211108 (1965-10-01), Mandorf, Jr. et al.
patent: 3469621 (1969-09-01), Fulgenal
patent: 3652073 (1972-03-01), Lewis
patent: 3744548 (1973-07-01), Ikoda et al.
patent: 3827920 (1974-08-01), Shimoda et al.
patent: 3903951 (1975-09-01), Kanodo
patent: 4042427 (1977-08-01), Razim et al.
Konig Johann
Kurvers Kurt
Accumulatorenfabrik Sonnenschein GmbH
Freeh William L.
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