Ring gear pumps
US5685266A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16N13/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Bulk and complexity of a lubrication system incorporated in an internal combustion engine (10) having an engine block (11), a power shaft (12) mounted in the engine block for rotation about a power shaft axis, a combustion chamber (18), a valve arrangement (20) for controlling intake to and exhaust from the combustion chamber (18), a cam device (22) for actuating the valve arrangement (20), and a pressurized oil lubrication system (15) is avoided in a construction wherein the cam device (22) and the pressurized oil lubrication system (15) include a ring cam (24) journalled on the block (11). The ring cam (24) has an outer cam-shaped periphery (26) for actuating the valve arrangement (20), and an inner periphery (35) configured as a ring gear (36). The cam device (22) and the pressurized oil lubrication system (15) further include a drive gear (38) driven by the power shaft (12) and located within the ring gear (36) of the ring cam (24) and meshed therewith at a predetermined mesh point (D) to define a gear pump therewith. One side of the mesh point (D) defines a suction side of the gear pump and has an oil inlet (78) thereat. The other side of the mesh point (D) defines a discharge…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.