Regulating device for a hydrostatic positive displacement unit

Details Regulating device for a hydrostatic positive displacement unit Regulating device for a hydrostatic positive displacement unit

1998-02-25

2000-04-11

Moulis, Thomas N.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417269, 92 122, F04B 126, F04B 112, F01B 300

Patent

active

060481765

ABSTRACT:
A regulating device for a hydrostatic positive displacement unit, such as an axial piston machine employing the swash plate principle, includes a control valve which pressurizes a regulating piston which determines the stroke volume or the displacement volume of the positive displacement unit. An electric-hydraulic regulating device having a simple construction is provided with the control valve in the form of a slide valve which can be actuated electrically. In one configuration of the invention, the slide valve can be actuated by a stepper motor.

REFERENCES:
patent: 4232587 (1980-11-01), Kline
patent: 4478136 (1984-10-01), Heiser et al.
patent: 4986383 (1991-01-01), Evans
patent: 5807076 (1998-09-01), Kawaguchi et al.
patent: 5881629 (1999-03-01), Gollner et al.

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