Total power controller

Details Total power controller Total power controller

2004-11-11

2009-10-27

Lopez, F. Daniel (Department: 3745)

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

Reexamination Certificate

active

07607297

ABSTRACT:
The invention relates to a total power regulation device for two pumps (2, 42), each of which is connected to a working conduit (5, 45). The delivery volume of the pumps (2, 42) can be set separately by a respective adjusting device (6, 46), whereby a control pressure that is active in each adjusting device (6, 46) can be set by a total power regulation valve (18, 58). The latter (18, 58) has a measuring surface (24, 64) of the total power regulation valve (18, 58) of one pump (2, 42) can be directly exposed to the working pressure of the other pump (42, 2).

REFERENCES:
patent: 4880359 (1989-11-01), Hoffmeister et al.
patent: 5333997 (1994-08-01), Hormann et al.
patent: 5567123 (1996-10-01), Childress et al.
patent: 5974796 (1999-11-01), Ishikawa et al.
patent: 6183210 (2001-02-01), Nakamura
patent: 39 19175 (1990-12-01), None
patent: 0 561 153 (1993-09-01), None
patent: 0 761 966 (1996-07-01), None
patent: 0 945 619 (1998-09-01), None
Abstract of Japanese Publication No. JP 10141241, dated May 26, 1998.
Abstract of Japanese Publication No. JP 2001-1254681, dated Sep. 21, 2001.

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