Hydraulic motor
US4398450A · kind A · utility
9Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1980 |
| Grant date | Aug 16, 1983 |
| Priority date | — |
| Expiry date | Jul 30, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF03C1/0476
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hydraulic motor with two sets of cylinders, the diameters of the two cylinder sets being of different dimension in order to produce three speed ranges. The pressure medium is directed to either both cylinder sets, the cylinder set of larger diameter of the cylinder set of smaller diameter by means of a valve structure comprising sliding spindles arranged in the hollow center axle of the motor, the pressure force of the pressure medium being utilized for moving the valve spindles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.