Pneumatic brake booster for use in a brake system
US6918249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2003 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Sep 26, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/5675
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake booster comprising an envelope (2) having a longitudinal axis (X) formed of a first (4) and of a second (6) shell to define an interior volume divided by moving a skirt into a low-pressure first chamber and a variable-pressure second chamber. A three-way valve (12) actuated by a control rod places the front chamber and the rear chamber in communication at rest and during a braking phase interrupts the communication between the front chamber and the rear chamber and thereafter allows communication of pneumatic fluid at high pressure to the rear chamber. The booster is attached to the master cylinder by a clip-fastening arrangement wherein tabs (52) that radially extend from a sleeve tube (48) are plastically deformable in the radial direction on enter into a passage (54) in a flange (56) of the master cylinder and returning to the initial position when the attachment operation is complete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.