Electric booster with hydraulic transmission
US8113595B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2008 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Jun 27, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/441
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric brake has a master cylinder (12) including pistons (22, 24) for rear and front brake circuits and an electric motor (50) for actuating the rear brake piston (22). A feedback circuit provides a signal indicative of the fluid pressure supplied to the rear brake circuit and is operable in response to driver commanded braking force (48) to supply fluid pressure to the rear wheel brake circuit. A mechanical coupling (44, 46) between the second piston and a brake pedal is responsive to driver applied brake pedal force to supply fluid pressure to the front wheel brake circuit. A fluid circuit (30, 82) utilizes the fluid pressure supplied to the rear wheel brake circuit to augment driver applied brake pedal force thereby supplying power boosted fluid pressure to the front wheel brake circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.