Air purging disc brake master cylinder assembly
AssigneeFox Factory, Inc.
InventorBill Becker
Life of this patent
Estimating the term…
Abstract
An air purging disc brake master cylinder assembly is provided. A master cylinder reservoir housing is oriented vertically relative to the disc brake master cylinder assembly. A bladder cap member is secured to a bladder member and the bladder member is received within the master cylinder reservoir housing. A bleed threaded aperture is provided in the bladder cap member in order to allow accumulated air bubbles in the master cylinder reservoir housing to escape to the atmosphere. A vent hole is also provided in the bladder cap member allowing direct communication of outside air within the bladder member.
Claims20
A disc brake master cylinder assembly comprising:
- a master cylinder reservoir housing extending upwardly from a disc brake master cylinder main body;
- a bladder member received within a brake fluid reservoir of the master cylinder reservoir housing;
- a bladder cap member secured to the bladder member, the bladder cap coupled to the master cylinder reservoir housing;
- and
- a vent hole provided in a sidewall of the bladder cap member, wherein the vent hole is configured to allow direct communication of outside air within the bladder member.
A method of using a disc brake master cylinder assembly comprising:
- coupling a disc brake master cylinder assembly to a brake system of a vehicle, the disc brake master cylinder assembly comprising:
- a master cylinder reservoir housing extending upwardly from a disc brake master cylinder main body;
- a bladder member received within a brake fluid reservoir of the master cylinder reservoir housing;
- a bladder cap member secured to the bladder member, the bladder cap coupled to the master cylinder reservoir housing;
- and
- a vent hole provided in a sidewall of the bladder cap member;
- expanding or contracting the bladder member in response to air entering or leaving an inner volume of the bladder member through the vent hole as brake fluid within the brake fluid reservoir is displaced during brake system operation;
- and
- reducing air within the brake fluid reservoir in response to the expanding and contracting of the bladder member, thereby inhibiting air introduction into a brake line of the brake system.
A disc brake master cylinder assembly comprising:
- a master cylinder reservoir housing extending upwardly from a disc brake master cylinder main body;
- a bladder system assembly provided in the master cylinder reservoir housing;
- a bladder member received within a brake fluid reservoir of the master cylinder reservoir housing;
- a bladder cap member secured to the bladder member;
- a hold down plate provided on the bladder member and secured to the bladder cap member;
- a pair of bladder cap screws securing the bladder cap member to the master cylinder reservoir housing;
- a bleed threaded aperture provided through the bladder cap member and communicating with the brake fluid reservoir through the hold down plate;
- a bleed screw provided within the bleed threaded aperture;
- and
- a vent hole provided in a sidewall of the bladder cap member, wherein the vent hole is configured to allow direct communication of outside air within the bladder member.
Dependencies are inferred from the claim text.