Proportioning hydraulic brake mechanism
US4453778A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1980 |
| Grant date | Jun 12, 1984 |
| Priority date | — |
| Expiry date | Jan 10, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/18
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic brake control device has a load sensing component connected through an electric circuit to a motorized proportioning valve which loads or unloads a resilient member therein to vary the split point of the proportioning valve. The electric circuit has an attitude cutoff switch and a speed cutoff switch which deactuate the electric circuit when the vehicle is pitched or rolled above a predetermined horizontal attitude and moving faster than a predetermined speed, respectively. The electric circuit can either actuate the motor to load the resilient member within proportioning valve, unload the resilient member within proportioning valve, or render the motor inactive and maintain the proportioning valve in a status quo condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.