Patent ID: 7448211

Claim:
A reservoir tank for use in a brake system comprising: a tank body including upper and lower shells joined together along mating surfaces thereof; said tank body including partition walls which divide an interior of said tank body into a plurality of chambers including a fluid level detecting chamber, thereby preventing pulsation of hydraulic fluid in said tank body; a filter mounted in one of said plurality of chambers; a fluid level sensor mounted in said fluid level detecting chamber; said filter and said fluid level sensor being mounted in said lower shell; and a partition plate fitted in said lower shell and restricting a flow of hydraulic fluid into and out of said fluid level detecting chamber; said upper shell having a hydraulic fluid supply port through which hydraulic fluid can be supplied into said tank body; said filter and said partition plate having top ends thereof pressed against a bottom end of at least one of said partition walls, whereby said filter and said partition plate are held in position in said tank body between said upper and lower shells.