Cylinder device
US10309479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2016 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Sep 26, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2230/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A cylinder device includes: an inner cylinder in which a functional fluid, a fluid property of which is changed due to an electric field or a magnetic field, is encapsulated; an outer cylinder provided outside the inner cylinder; an intermediate cylinder provided between the inner cylinder and the outer cylinder to serve as an electrode or a magnetic pole; a rod guide provided to close the one end side end portions of the inner cylinder and the outer cylinder; a spacer having one end located at the rod guide side and the other end located at the one end side of the intermediate cylinder, and fitted to the inner cylinder; and an elastic seal member disposed in a portion of the other end of the spacer, and configured to seal the one end side end portion of the passage between the intermediate cylinder and the inner cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.