# US 2014/0150876 A1 · Pressure medium container for a hydraulic motor vehicle brake system and method for filling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0150876 A1 - Document ID: US20140150876A1 - Status: Published application - Kind: A1 - Application number: 14/007,015 - Filed: 2012-03-22 - Published: 2014-06-05 - Earliest claimed: 2011-03-24 - Assignees: Continental Teves AG & Co. oHG - Inventors: Stefan A. Drumm - Web page: https://patentgrep.com/patent/US20140150876A1 ## CPC - B60T 11/26: Reservoirs (integral with master controls B60T11/22) - B60T 17/06: Applications or arrangements of reservoirs - Y10T 137/0318: Processes - Y10T 137/8593: Systems - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The invention relates to a pressure medium container for a hydraulic motor vehicle brake system, having a housing, a filler opening, a closure element and at least one hydraulic connection to the hydraulic pressure medium supply of the motor vehicle brake system. The problem of the present invention consists in reliably managing a fluctuating pressure medium filling level while nevertheless providing a container of minimal overall size and simplifying motor vehicle maintenance. The proposed solution is to provide a structurally predetermined defined volume reservoir for receiving a pressure medium, which can be rendered hydraulically effective by arranging the closure element on the filler opening. ## Claims ### Claim at position 1 -14. (canceled) ### Claim 15 A pressure medium container for a hydraulic motor vehicle brake system, having a housing, having a filler opening, having a closure element and having at least one hydraulic connection to the hydraulic pressure medium supply of the motor vehicle brake system, wherein a structurally predetermined defined volume reservoir for receiving pressure medium can be rendered hydraulically effective by arranging the closure element on the filler opening. ### Claim 16 (depends on 15) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 15, wherein the volume reservoir extends spatially above an upper edge of the filler opening of the pressure medium container situated in an envisaged installation position. ### Claim 17 (depends on 15) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 15, wherein the closure element is arranged fluidtightly and releasably on the filler opening. ### Claim 18 (depends on 15) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 15, wherein the closure element is arranged in a hermetically sealed and releasable manner on the filler opening. ### Claim 19 (depends on 15) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 15, wherein an interface between the closure element and the filler opening is of fluidtight and releasable design. ### Claim 20 (depends on 15) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 15, wherein an interface between the closure element and the filler opening is of hermetically sealed and releasable design. ### Claim 21 (depends on 15) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 15, wherein the volume reservoir is provided in an integrated manner on the closure element. ### Claim 22 (depends on 21) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 21, wherein the closure element has a pressure equalizing device. ### Claim 23 (depends on 22) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 22, wherein the pressure equalizing device allows a gas-permeable connection to a surrounding atmosphere, wherein one end of the connection is arranged inside the volume reservoir, in the immediate vicinity of the highest point thereof, wherein the highest point can be defined in the envisaged installation position of the pressure medium container. ### Claim 24 (depends on 22) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 22, wherein the pressure equalizing device is a gas-permeable connection to a surrounding atmosphere, wherein one end of the connection is assigned to the filler neck. ### Claim 25 (depends on 15) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 15, wherein the volume reservoir is provided separately from the closure element in a divided design, as a separate molded portion of a half shell. ### Claim 26 (depends on 25) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 25, wherein the volume reservoir is assigned a pressure equalizing device, which is provided separately from the closure element. ### Claim 27 (depends on 26) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 26, wherein the pressure equalizing device allows a gas-permeable connection to a surrounding atmosphere, wherein one end of the connection is arranged inside the volume reservoir, in the immediate vicinity of the highest point thereof, wherein the highest point can be defined in the envisaged installation position of the pressure medium container. ### Claim 28 (depends on 26) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 26, wherein the pressure equalizing device is a gas-permeable connection to a surrounding atmosphere, wherein one end of the connection is assigned to the filler neck. ### Claim 29 (depends on 15) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 15, wherein the volume reservoir is formed by at least two reservoir sections at separate locations. ### Claim 30 (depends on 29) The pressure medium container for a hydraulic motor vehicle brake system as claimed in claim 29, wherein the volume reservoir is assigned a pressure equalizing device, which is provided separately from the closure element. ### Claim 31 A method for filling a pressure medium container for a hydraulic motor vehicle brake system, having a housing, having a filler opening, having a closure element and having at least one hydraulic connection to the hydraulic pressure medium supply of the motor vehicle brake system, wherein a structurally predetermined defined volume reservoir for receiving pressure medium can be rendered hydraulically effective by arranging the closure element on the filler opening, the method comprising: filling the pressure medium container with pressure medium substantially up to an upper edge of the filler opening, and closing the filler opening in a leaktight manner by means of the closure element, wherein the defined volume reservoir is rendered hydraulically effective by closing the filler opening.