Underwater actuator and underwater vehicle including the same
US10550866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2016 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Oct 6, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/8855
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An underwater actuator includes: a housing to be immersed under water; a cylinder chamber formed in the housing; a piston accommodated in the cylinder chamber so the piston is movable in a sliding manner in the cylinder chamber, the piston dividing the cylinder chamber into a first and a second pressure receiving chambers; a rod extending from the piston to the first pressure receiving chamber side, the rod penetrating the housing; a release chamber formed in the housing, having an internal pressure kept lower than a water pressure outside of the housing; and a switching mechanism including: a first switcher configured to switch a communication state between the second pressure receiving chamber and the outside of the housing to allow or block communication therebetween; and a second switcher configured to switch a communication state between the second pressure receiving chamber and the release chamber to allow or block communication therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.