Patent · US Active

Piezohydraulic actuator

US10851808B2 · kind B2 · utility

1Cited by

4References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Georg Bachmaier · Birkenfeld, DE
Christian Bachmann · Hersbruck, DE
Wolfgang Zöls · Markt Indersdorf, DE
Iason Vittorias · Hersbruck, DE

Key dates

Filing date	Feb 5, 2018
Grant date	Dec 1, 2020
Priority date	—
Expiry date	Feb 5, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF15B2211/775
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An actuator comprising: a piezo actuator; a drive having a drive chamber and a drive piston element driven by the piezo actuator; a first output having an output chamber and a piston element; and a second output having an output chamber and a piston element. At least part of the hydraulic fluid is conveyed out of the drive chamber by movement of the drive piston element and into the first output chamber. At least part of the hydraulic fluid is conveyed out of the drive chamber and into the second output chamber. The second output piston element has a hydraulically active second output face which is different in size from the first output face. There may be a coupling device mechanically coupling the first output piston element to the second output piston element.

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