Patent · US Active

Electrohydraulic pilot control with two pressure control valves

US9534702B2 · kind B2 · utility

3Cited by

7References

6Claims

0Family size

Assignee

Thomas Magnete GmbH · DE

Inventors

Jürgen Schonlau · Eltville am Rhein, DE
Jens Krallmann · Niederfischbach, DE
Harald Geis · Saarburg, DE
Marc Leinweber · Neunkirchen, DE
Thomas Zastrau · Siegen, DE
Rene Schulz · Rabenau, DE

Key dates

Filing date	Oct 9, 2012
Grant date	Jan 3, 2017
Priority date	—
Expiry date	Apr 14, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7764
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

Electrohydraulic pilot control means (1) for a hydraulic device which can be a proportional directional valve, an adjusting pump or an adjusting motor, which pilot control means contains two proportionally acting pressure control valves (3) and is provided with a control block (2) which accommodates the hydraulic valve parts (4) in holes and to which the associated proportional magnets are flange-connected, wherein the proportional magnets have a common electrical plug connection (5) and wherein the two proportional magnets (3) are joined to form an assembly by being encapsulated with plastic, the said assembly being fastened to the control block (2) and, in this case, being precisely oriented relative to the valve components (4), which are accommodated in the control block, by means of positioning aids which act perpendicular to the movement direction of armatures.

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