Force feedback and pressure equalization brake system
US6431661B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Oct 24, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A work vehicle is provided with a brake system actuated by depressing either the left pedal or the right pedal. The brake system comprises two parallel brake circuits. The first brake circuit has a first brake actuator, a first hydraulic line, a first flow regulating portion of a tandem brake valve and a first accumulator. The second brake circuit has a second brake actuator, a second hydraulic line, a second flow regulating portion of the tandem brake valve and a second accumulator. To equalize the hydraulic pressure applied to the first and second brake actuators, an equalizer hydraulic line having an orifice extends between the first and second hydraulic lines. A force feedback hydraulic circuit is hydraulically positioned between the first and second hydraulic lines. The force feedback circuit comprises a first force feedback hydraulic line, a second force feedback hydraulic line and a force feedback hydraulic actuator. The first feedback line extends between the first and second hydraulic lines. The second feedback line extends from the first feedback line to the feedback actuator. The feedback actuator is mounted to the tandem brake valve. The first feedback line is provided …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.