Vented reservoir for a master cylinder
AssigneeKelsey-Hayes Company
InventorLouis S. Tang
Life of this patent
Estimating the term…
Abstract
A reservoir including a housing having a chamber formed therein for the storage of hydraulic brake fluid. The chamber is in fluid communication with a master cylinder. The housing has an opening which is in communication with the atmosphere. The housing further including a passageway in communication with the cavity and the opening. A membrane is disposed in the passageway of the housing. The membrane has oleophobic properties such that the membrane permits the passage of air therethrough and substantially prevents the passage of brake fluid therethrough.
Claims20
A reservoir for a master cylinder being used in atmosphere comprising:
- a housing having a chamber formed therein for the storage of brake fluid, said housing having an opening in communication with the atmosphere, said housing further including a passageway in communication with said cavity and said opening;
- a membrane disposed in said passageway, wherein said membrane permits the passage of air therethrough and substantially prevents the passage of brake fluid therethrough;
- and
- a perforated retainer having a plurality of openings formed therein which permit the passage of air therethrough, said retainer positioned adjacent to and contacting said membrane for supporting said membrane in said housing.
A cap for a master cylinder reservoir having a fluid chamber formed therein, said cap comprising:
- a housing having a passageway formed therethrough, said passageway being in communication with the fluid chamber of the reservoir and atmosphere;
- a membrane disposed in said passageway, wherein said membrane permits the passage of air therethrough and substantially prevents the passage of brake fluid therethrough;
- and
- a perforated retainer having a plurality of openings formed therein which permit the passage of air therethrough, said retainer positioned adjacent to and contacting said membrane for supporting said membrane in said housing.
A vehicle brake system comprising:
- a master cylinder including a housing having a bore formed therein;
- a reservoir connected to said master cylinder, said reservoir including a housing having a chamber formed therein for the storage of brake fluid, said chamber in fluid communication with said bore of said master cylinder, said housing of said reservoir having an opening in communication with the atmosphere, said housing of said reservoir further including a passageway in communication with said chamber and said opening;
- a membrane disposed in said passageway, wherein said membrane permits the passage of air therethrough and substantially prevents the passage of brake fluid therethrough;
- and
- a perforated retainer having a plurality of openings formed therein which permit the passage of air therethrough, said retainer positioned adjacent to and contacting said membrane for supporting said membrane in said housing.
Dependencies are inferred from the claim text.