Multi-stage hydraulic cylinder assembly
US9151304B2 · kind B2 · utility
1Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2012 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Jul 13, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/067
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A cushion arrangement for smoothing stage changes in an hydraulic cylinder and including at least one compression chamber of variable volume with a movable and/or deformable chamber wall element displaceable by at least one of the pistons when approaching the transition zone between first and second stages of displacement. The compression chamber is operatively connected to a gas volume to be compressed upon displacement of the chamber wall element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.