Patent · US Active

Electric hydraulic actuator

US9562547B2 · kind B2 · utility

1Cited by

2References

15Claims

0Family size

Assignee

ABB Schweiz AG · CH

Inventors

Harald Staab · Peising, DE
Jeremy T. Newkirk · Town of West Hartford, US
Thomas A. Fuhlbrigge · Ellington, US

Key dates

Filing date	Aug 29, 2014
Grant date	Feb 7, 2017
Priority date	—
Expiry date	Jul 29, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF15B2211/785
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

There is set forth herein an actuator having a housing and a piston assembly. The piston assembly can have a piston and a piston rod extending from the piston. In one embodiment, the housing can receive the piston and a portion of the piston rod. The piston assembly can define a piston assembly interior and a fluid reservoir can be located within the piston assembly interior. A chamber region within the interior of the housing can be separated by the piston assembly to define a piston side chamber and rod side chamber. The piston assembly can be moveable so that respective volumes of each of the piston side chamber and the rod side chamber are variable. For operation of the actuator by movement of the piston assembly within the interior of the housing, fluid can be moved between the reservoir and the chamber region.

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