Master cylinder
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United States of America Patent
Stats
-
Oct 28, 2003
Grant Date -
May 8, 2003
app pub date -
Nov 7, 2001
filing date -
Nov 7, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A throttle valve mechanism having a throttle function of throttling the flow of working fluid from a pressure delivering chamber to a reservoir at the operation time of the piston of a master cylinder, a valve function of allowing the working fluid to flow from the reservoir to the pressure delivering chamber by opening the valve at the return time of the piston, and a relief valve function of allowing a large quantity of working fluid to flow from the pressure delivering chamber to the reservoir is disposed in a fluid passage for connecting the master cylinder to the reservoir. The master cylinder can decrease the quantity of working fluid flowing to the reservoir at the time of operation start of the master cylinder, and can respond to the fluctuations in fluid pressure quickly when a traction control unit, an automobile stability control unit, etc. are released.
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