Braking apparatus for an automotive vehicle
US4475336A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1981 |
| Grant date | Oct 9, 1984 |
| Priority date | — |
| Expiry date | Aug 19, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/148
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A braking apparatus (28) includes a housing (38). The housing (38) includes therein: a master cylinder section (40) for supplying pressurized fluid to the brakes (24) of an automotive vehicle (10) to effect a brake application, a hydraulic booster section (42) for assisting the master cylinder section (40) to effect a brake application, a fluid pumping section (44) driven by an electric motor, for supplying pressurized fluid to the hydraulic booster section (42), and a reservoir section (46) supplying a single fluid to the sections 40, 42, and 44. The electric motor driving the fluid pumping section (44) receives energy from the vehicle (10) only in response to a need for braking. The brake booster (28) includes a fluid pressure accumulator (147) providing pressurized fluid to the booster section (42) during a brake application. The accumulator (147) also provides for power-assisted braking in the event of a failure of the motor-driven pumping section (44).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.