Patent · US Expired

Electrohydraulic control arrangement for hydrostatic machine

US4478136A · kind A · utility

23Cited by

5References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Joachim Heiser · Stuttgart, DE
Volkmar Leutner · Friolzheim, DE
Eckard Schuttenberg · Stuttgart, DE
Dieter Weigle · Urach, DE

Key dates

Filing date	Aug 4, 1982
Grant date	Oct 23, 1984
Priority date	—
Expiry date	Aug 4, 2002

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B1/324
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An electrohydraulic control arrangement for a hydrostatic machine with displacing element having a stroke determined by a control member, which has at least one pressure-actuated regulating piston arranged to adjust the control member, and a valve slider through which a pressure medium acts upon the regulating piston and which is withdrawable to a neutral position in response to adjusting the machine by a feedback signal coming from the control member in correspondence with an electrical input signal, wherein a constant pressure acts upon one side of the valve slider and a variable pressure depending upon a position of the control member acts upon the other side of the valve slider.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.