Efficiency spur gear set housing
US9068643B2 · kind B2 · utility
1Cited by
12References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Mar 10, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2186
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic pump housing comprises passages formed in an inner wall separating the gear cavity and the pump cavity to allow for the movement of fluid into and out of the gear cavity, thereby alleviating some of the power loss caused by churning lubricating oil. The hydraulic pump may comprise spaces integrally formed in axially opposing surfaces of the gear cavity walls adjacent the area where the gears mesh to enable the churning oil to expand and flow around the gears.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.