Brake system
US6352316B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 3, 2000 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Apr 3, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/221
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake system including a negative pressure booster, a master cylinder of tandem type and an intensifying arrangement. The intensifying arrangement defines an intensifying chamber disposed rearward of a primary piston, a pump for supplying a braking liquid to the intensifying chamber, and a reaction piston and a sleeve for controlling the pressure of the braking liquid which is supplied to the intensifying chamber. As a brake pedal is depressed and the intensifying arrangement is actuated, a sum of an urging force from the negative pressure booster and an urging force from the intensifying arrangement operates the primary piston to develop a master cylinder pressure. The sum is proportional to the input or a force depressing the brake pedal. In this manner, a simple arrangement assures a satisfactory booster function even after the negative pressure booster has reached a full load point or the limit of its assistance or in the event of the failure of a source of a negative pressure for the negative pressure booster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.