Pump system, charge relief mechanism and oil pressure...

Details Pump system, charge relief mechanism and oil pressure... Pump system, charge relief mechanism and oil pressure...

2008-05-13

2008-05-13

Lopez, F. Daniel (Department: 3745)

Power plants

Pressure fluid source and motor

Having plural energy input means, pumps or diverse pump outlets

Reexamination Certificate

active

11150250

ABSTRACT:
There is provided a pump system including; a plurality of hydraulic pump bodies arranged in parallel; a plurality of pump shafts respectively driving the plurality of hydraulic pump bodies; a power transmission mechanism operatively connecting the plurality of pump shafts; and a pump case which accommodating the plurality of hydraulic pump bodies and the power transmission mechanism, and supports the plurality of pump shafts in a rotatable manner about an axis line, the pump case including a port block formed with supply/discharge oil passages for the plurality of pump bodies. One pump shaft of the plurality of pump shafts has a first end extending outward from the pump case so as to form an input end operatively connected to a driving source. The one pump shaft is directly or indirectly supported by the pump case at a region which is closer to the input end via a plurality of bearing members.

REFERENCES:
patent: 3232056 (1966-02-01), Heinrich et al.
patent: 3241319 (1966-03-01), Andrews
patent: 6425244 (2002-07-01), Ohashi et al.
patent: 6672843 (2004-01-01), Holder et al.
patent: 6953327 (2005-10-01), Hauser et al.
patent: 1 350 421 (2003-10-01), None

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