Braking device
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United States of America Patent
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Sep 1, 2015
Grant Date -
Jun 27, 2013
app pub date -
Dec 21, 2012
filing date -
Dec 21, 2011
priority date (Note) -
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Abstract
A braking device comprises: a master cylinder; an electrical pressure adjusting unit; a reaction force generating unit, which forms a reaction force chamber and which generate a reaction hydraulic pressure in the reaction force chamber; a reservoir for brake fluid; an inter-chamber brake fluid path; a reservoir path that connects the reservoir and the inter-chamber brake fluid path; and a normally-closed control valve, wherein the electrical pressure adjusting unit includes an electrical pump which is directly connected with the driving hydraulic pressure chamber to supply the brake fluid to the driving hydraulic pressure chamber, and wherein at least one of electromagnetic valves provided in the electrical pressure adjusting unit and the reaction force generating unit is a normally-opened electromagnetic valve, which is provided in the inter-chamber brake fluid path and is configured to communicate the inter-chamber brake fluid path in a non-conduction state.
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