Pumps – Diverse pumps – Series
Patent
1977-06-30
1978-08-08
Croyle, Carlton R.
Pumps
Diverse pumps
Series
417269, F04B 2312
Patent
active
041053699
ABSTRACT:
A two-stage pump having a low and high pressure stages having a casing with a pair of pumps positioned therein, with one pump being a low pressure stage unit and the other pump being a high pressure stage unit. Each of the pumps has a fluid inlet and a fluid outlet with the outlet of the low stage pump being in fluid flow relation with an outlet port from the casing and also the fluid inlet of the high stage pump. The low stage pump is supplied with fluid through internal flow passages in the casing and associated structure including a flow passage through a rotatable element of the high stage pump.
REFERENCES:
patent: 2495685 (1950-01-01), Beaman et al.
patent: 2604047 (1952-07-01), Beaman et al.
patent: 3053186 (1962-09-01), Gondek
patent: 3380392 (1968-04-01), Boers
patent: 3614267 (1971-10-01), Schultze
patent: 3992131 (1976-11-01), Masterman et al.
Croyle Carlton R.
Gluck R. E.
Owatonna Tool Company
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