Patent ID: 8607563
Filing Date: 2013-12-17
Classification: B60T

Abstract:
1. A reservoir tank comprising: a hydraulic fluid supply opening portion for supplying hydraulic fluid; a hydraulic fluid supply portion provided in a lower section of the hydraulic fluid supply opening portion, to which hydraulic fluid is supplied from the hydraulic fluid supply opening portion; a hydraulic fluid storage chamber that stores the hydraulic fluid to be fed to a master cylinder as a result of the hydraulic fluid in the hydraulic fluid supply portion being supplied thereto via a hydraulic fluid passage; and a cylindrical portion that has the hydraulic fluid supply opening portion at one end and is disposed in a vertical direction between the hydraulic fluid supply opening portion and the hydraulic fluid supply portion and has inside a chamber that is in communication with the hydraulic fluid supply portion, wherein the cylindrical portion includes on an inside thereof a chamber that is in communication with the hydraulic fluid supply portion, a volume-augmented chamber forming portion is disposed on the hydraulic fluid supply opening portion side of in the cylindrical portion and has inside a volume-augmented chamber that is in communication with the chamber of the cylindrical portion, and at least part of the volume-augmented chamber is positioned above a MAX line that is a maximum storage level of the hydraulic fluid.