Lubrication system of a marine propulsion device
US7850496B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2008 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Aug 21, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H20/001
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A lubrication draining and filling system provides oil passages that direct a flow of liquid oil from a bottom region of an oil sump, located within a rotatable portion of the marine propulsion system, to a discharge port which is connectable in fluid communication with a device that can sufficiently lower the pressure at the discharge port to induce the upward flow of oil from the lower portion of the oil sump within the gear case. The cavity of the oil sump within the gear case is disposed within a rotatable portion of the marine propulsion device while the discharge port is located within a stationary portion of the marine propulsion device. A transitional region comprises a space located between the stationary and rotatable portions. The oil can therefore flow from a rotatable portion, into the space, and then from the space into the stationary portion which allows it to be removed from the marine propulsion device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.