Hydraulic tilt device for marine outboard drive
US6558212B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1999 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Aug 20, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B61/045
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hydraulic tilt device for a marine outboard drive comprising a cylinder and a piston slidably supported in the cylinder and defining a first and a second chambers. A working fluid is contained in both of the chambers. A piston rod extends from the piston through the first chamber. The first and second chambers are joined together by a passage that is opened or closed by a switchover valve. Gasses are also contained for compensating the working fluid and pressuring it in the first chamber. Means is provided for permitting flow of the working fluid from the second chamber to the first chamber when the passage is closed and the second chamber produces a pressure greater than a predetermined magnitude. The gasses are dispensable if a fluid reservoir is provided for compensating the working fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.