Title:
自動車用ブレーキ力ブースター
Document Type and Number:
Japanese Patent JP4285903
Kind Code:
B2
Abstract:
The present invention relates to a brake force booster for automotive vehicles with a booster housing having its interior space subdivided by a movable wall into a vacuum chamber and a working chamber, and with a control valve which controls a pressure differential that acts upon the movable wall and is accommodated in a control housing that carries the movable wall, the said control valve being comprised of at least two concentrically arranged sealing seats and a valve member which defines in the control housing a pneumatic chamber that can be acted upon by the pneumatic pressure that prevails in the working chamber wherein the valve member includes at least two sealing lips of different diameters which define the pneumatic chamber in the control housing, and that the effective pneumatic surface of the chamber which is influenced by the difference in diameters is generally in conformity with the pneumatic surface defined between the two sealing seats.
Inventors:
Kramer, Horst
Application Number:
JP2000531339A
Publication Date:
June 24, 2009
Filing Date:
February 09, 1999
Export Citation:
Assignee:
Continental Tevez Age und Companion Ohage
International Classes:
B60T13/57
Domestic Patent References:
| JP8500307A | ||||
| JP8268266A | ||||
| JP9507813A | ||||
| JP3005274A |
Foreign References:
| WO1997001471A1 | ||||
| WO1997023374A1 | ||||
| WO1996038329A1 | ||||
| WO1996041738A1 | ||||
| DE3445118A |
Attorney, Agent or Firm:
Takehiko Suzue
Sadao Muramatsu
Ryo Hashimoto
Toshio Shirane
Sadao Muramatsu
Ryo Hashimoto
Toshio Shirane