Patent · US Active

Electrohydraulic system having an adjustment device for a valve

US11976741B2 · kind B2 · utility

0Cited by

6References

16Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Juergen Schneider · Freinsheim, DE
Alexandre Orth · Hettstadt, DE
Gottfried Hendrix · Kirchberg, DE
Oliver Gerhard · Zellingen, DE

Key dates

Filing date	Mar 9, 2020
Grant date	May 7, 2024
Priority date	—
Expiry date	Jun 16, 2040

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B34/04
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An electrohydraulic system having an adjustment device for a valve includes a drive apparatus, a control apparatus, and a preloading apparatus. In the event of a fault, the energy stored in the preloading apparatus can be transferred to the control apparatus such that a rotational motion of the control apparatus begins, which leads to the adjustment of the valve. The preloading apparatus comprises at least one elastic element, which is arranged adjacent to a control shaft of the control apparatus, is stationarily connected to the control shaft, and applies a torque to the control shaft.

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