Pumps – With condition responsive pumped fluid control – Plural pump units with individual or relative control
Patent
1994-03-31
1997-03-11
Vrablik, John J.
Pumps
With condition responsive pumped fluid control
Plural pump units with individual or relative control
417310, 417428, 418196, F04B 49035
Patent
active
056094744
ABSTRACT:
A gear pump having three gears, including; a pump case consisting of a pump body and a cover for covering most of the body; three gears which are supported by a rotating shaft on the pump case and engaged with each other in series; first and second gear pumps each composed of one central drive gear and one of the driven gears on both sides of the drive gear; a non-return valve and a flow regulation valve which are opened at a predetermined pressure; an inlet port which is opened at one end of the pump case and connected through a feed path to the suction side of the two gear pumps; an outlet port formed on the discharge side of the first gear pump in the pump case; a regulation path passing from the discharge side of the second gear pump through the non-return valve to the outlet port; and a flow regulation path passing from the regulation path through the flow regulation valve to an oil pan.
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Tokyo Buhin Kogyo Co., Ltd.
Vrablik John J.
Wicker William
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