Brake booster
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United States of America Patent
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-
Jun 15, 2004
Grant Date -
Jun 12, 2003
app pub date -
Oct 10, 2002
filing date -
Dec 7, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A brake booster 1 includes a valve mechanism 6, and a solenoid 8 which operates the valve mechanism 6. When the solenoid 8 is energized, a solenoid plunger 26 and a valve seat member 11 move rearward relative to a valve body 3, whereby the valve mechanism 6 is operated to actuate the brake booster 1 without depressing a brake pedal. A core member 27 which forms a magnetic path for the solenoid 8 is disposed rearward of the solenoid plunger 26 so as to be movable axially of the valve body and so as to move in linked relationship with a valve plunger 13. The invention allows the size of the solenoid 8 to be reduced.
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