Equalizing flow from pressure compensated pumps, with or...

Details Equalizing flow from pressure compensated pumps, with or... Equalizing flow from pressure compensated pumps, with or...

2005-08-23

2005-08-23

Look, Edward K. (Department: 3745)

Power plants

Pressure fluid source and motor

Motor driven by motive fluid of system drives pump...

C060S428000, C060S405000

Reexamination Certificate

active

06931846

ABSTRACT:
A rotary flow combiner allows flow from multiple pressure compensated hydraulic pumps; with or without load sensing to be combined into a single outlet. The flows are combined in such a way that each input to the rotary flow combiner has equal flow. The flow from each pump is optimized in such a way that the output from the rotary flow combiner can achieve the maximum range of flow and pressure and so that all the pumps in the multiple pump system are supplying fluid flow at all times. A check valve can allow the rotary flow combiner to pull hydraulic fluid direct from a reservoir in parallel to a lower flow pump such that the volume of flow from the lower pump combined with the fluid drawn directly from the reservoir will match the flow from the higher flow pump.

REFERENCES:
patent: 6276468 (2001-08-01), Essig et al.
patent: 6438951 (2002-08-01), Morgan
patent: 6823671 (2004-11-01), Achten

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