Hydraulic actuator piston measurement apparatus and method
US6848323B2 · kind B2 · utility
16Cited by
128References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2002 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Jan 18, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/2838
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and device for use with a hydraulic system is adapted to measure a position, velocity and/or acceleration of a piston of a hydraulic actuator based upon differential pressure measurement. The device of the present invention utilizes a differential pressure flow sensor to establish a flow rate of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator, from which the position, velocity and acceleration of the piston can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.