Pumps – With condition responsive pumped fluid control – Pressure responsive relief or bypass valve
Patent
1978-03-03
1980-07-22
Croyle, Carlton R.
Pumps
With condition responsive pumped fluid control
Pressure responsive relief or bypass valve
F04B 4908
Patent
active
042137446
ABSTRACT:
A hydraulic pump is disclosed of the type including a by-pass valve to limit the fluid volume output of the pump. The by-pass valve is disposed within a portion of the pump housing which extends axially into the fluid reservoir and defines a pair of by-pass ports. The pump is preferably balanced and includes a pair of diametrically opposed inlet kidney ports. A tubular member is used to direct a portion of the by-pass fluid from each of the by-pass ports toward the adjacent inlet kidney. Each of the tubular members is disposed to direct the by-pass flow axially into the inlet kidney, thus improving filling of the pumping pockets, and reducing cavitation and the resultant noise.
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patent: 3759636 (1973-09-01), Schaefer et al.
patent: 3806273 (1974-04-01), Clark et al.
Davis Michael D.
Gustner Harold L.
Croyle Carlton R.
Eaton Corporation
Johnston R. A.
Kasper L.
Look Edward
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