Patent · US Active

Hydrostatic variable displacement pump which can be set in either direction of displacement

US9863532B2 · kind B2 · utility

1Cited by

5References

16Claims

0Family size

Assignee

Linde Hydraulics GmbH & Co. KG · DE

Inventors

Rolf Lasaar · Großostheim, DE
Markus Jung · Gießen, DE

Key dates

Filing date	Feb 28, 2014
Grant date	Jan 9, 2018
Priority date	—
Expiry date	May 22, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF15B2211/8752
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A hydrostatic variable displacement pump (2) has a displacement volume set by an electro-hydraulic control device (10) provided with a safety function. In a fault scenario, the variable displacement pump (2) is set to a neutral position. The electro-hydraulic control device (10) has a single electro-hydraulic setpoint encoder (30) to specify the setpoint of the displacement volume of the variable displacement pump (2) and an electrically actuatable valve device (35) connected in series downstream of the setpoint encoder (30), by which the direction of displacement of the variable displacement pump (2) is controlled and which is provided with the safety function.

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