Hydraulic pump and motor
US6874994B2 · kind B2 · utility
11Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2001 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Aug 18, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B1/328
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hydraulic unit has a drive shaft (52) mounted in a manifold block (54) and coupled to a torque plate (80) on a central axis. A bent axis motive unit (60) has a yoke connected to the manifold block supported for rotation on the yoke. Hollow pistons (100) in cylinders in the cylinder block allow fluid to flow through a torque plate into and form the manifold without the necessity for passing fluid through an articulating member that pivots the cylinder block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.