Control valve apparatus
US3938538A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1974 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Jan 28, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0947
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control valve is disclosed which includes first and second valves. An inverted pendulum is operative with the valves such that when the pendulum rotates in one direction the first valve is opened and the second valve is closed, and when the pendulum rotates in the opposite direction the valve operation is exactly opposite. An electromagnetic device may also be operative with the inverted pendulum which device when energized causes the inverted pendulum to rotate in one direction or the other. The inverted pendulum may also be rotatably biased for holding one valve opened and the other valve closed. The control valve may be used in any number of control systems and is especially suited for use as a master control valve in a vehicle braking system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.