Electro-hydraulic brake actuating device for a trailer
US6666527B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2001 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Nov 27, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/686
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A trailer brake system includes a control sensor adapted to provide a signal when the braking system of the tow vehicle is actuated, at least one trailer brake actuated by pressurized brake fluid, a brake fluid reservoir, a brake fluid pump receiving fluid from the brake fluid reservoir, and a first solenoid valve connected to the brake fluid pump and directly connected to the trailer brake. A brake fluid accumulator receives pressurized brake fluid from the brake fluid pump and is connected to the first solenoid valve to quickly provide pressurized brake fluid to the trailer brake to increase the braking force. A second solenoid valve connects the trailer brake and the brake fluid reservoir so that brake fluid can be returned to the reservoir to reduce to reduce the fluid pressure and resulting braking force. A feedback pressure sensor is capable of generating a signal that represents braking force applied to the trailer brake. A controller is in communication with the control sensor, the first solenoid valve, the second solenoid valve, and the feed back sensor and is adapted to selectively open the first valve to increase braking force applied to the trailer brake and to open the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.