Patent · US Expired

Steering assistance pump

US4610607A · kind A · utility

1Cited by

3References

14Claims

0Family size

Assignee

Vickers Systems · GB

Inventors

Heinz Kruger · Wedel, DE
Heinz Teubler · Friedrichsdorf, DE
Rene Schulz · Rabenau, DE
Erwin Staemmler · Kronberg, DE

Key dates

Filing date	Feb 27, 1985
Grant date	Sep 9, 1986
Priority date	—
Expiry date	Feb 27, 2005

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C14/28
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A steering assistance pump includes a temperature sensor valve which communicates with an inlet duct of the pump by way of an additional, normally closed outlet passage. When a pressure relief valve responds, upon blocking of the servo steering means, the temperature of the hydraulic fluid in the system increases to such a degree that it exceeds the limit value of the temperature sensor valve. The valve thus opens to cause the pilot control pressure in the control chamber of the pressure relief valve to be reduced, whereby the pump pressure itself is also reduced.

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