Hydraulic pressure spring and method of manufacturing the same
US9400028B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2014 |
| Grant date | Jul 26, 2016 |
| Priority date | — |
| Expiry date | Oct 8, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49615
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic pressure spring includes a hollow cylindrical cylinder having a threaded portion at one end thereof; a closure means which is threadedly engaged with the threaded portion at the one end of the cylinder and closes the one end of the cylinder; a closure means which is provided at the other end of the cylinder and closes the other end of the cylinder; a compressible liquid which is sealed in an interior of the cylinder and is pressurized to a predetermined pressure; a rod which is passed through the closure means movably in an axial direction A and causes the liquid in the interior of the cylinder to undergo a pressure rise as the rod enters the interior of the cylinder; and a piston disposed in the interior of the cylinder and attached to one end of the rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.