Oil-pressure transmission device
US4705465A · kind A · utility
Inventor
Key dates
| Filing date | Jan 22, 1986 |
| Grant date | Nov 10, 1987 |
| Priority date | — |
| Expiry date | Jan 22, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C20/22
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid pressure-operated device has a rotor mounted inside a main housing, radial slots circumferentially spaced in the rotor, radially sliding vanes in the slots, springs urging the vanes radially inwardly to engage at their inner ends with a cam at the center of the rotor, a control arm pivotally mounted on the housing for changing the position of the cam to control radial displacement of the vanes and opening and closing of a valve having inlet/outlet ports connected to an annular chamber in which the vanes rotate so that fluid pressure from the valve will drive the vanes and thus the rotor in either direction of rotation, depending upon the position of the control arm and cam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.