Hydraulic cylinder contamination prevention system
US8291810B2 · kind B2 · utility
13Cited by
13References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2009 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Jun 26, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7837
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic cylinder contamination prevention system for preventing large and small contaminants from entering into a hydraulic cylinder, including a hydraulic cylinder rod cover for underwater use with at least one automatic valve for preventing water circulation between the outside environment and the enclosed environment of the cylinder rod cover when the cylinder is stationary, egress of water from the cylinder rod cover when the cylinder is retracted, and ingress of water into the cylinder rod cover when cylinder is extended, and an external and abrasive cylinder rod scrubber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.