Brake bleeding tool

Details Brake bleeding tool Brake bleeding tool

1997-02-21

1998-10-06

Chambers, A. Michael

Fluid handling

Processes

Involving pressure control

137351, 137559, 1376142, 188352, F16K 1518

Patent

active

058162810

ABSTRACT:
A brake bleeding tool allows one person to bleed the hydraulic lines leading to a vehicle wheel cylinder. A check valve allows hydraulic fluid and air to pass out of the wheel cylinder when the brake pedal is depressed and prevents back flow when the brake pedal is released. In one embodiment, a hose connects the check valve to the wheel cylinder and, in another embodiment, a rigid connector connects the check valve to the wheel cylinder. The hose or the rigid connector includes a permanent air trap preventing air bubbles from moving by gravity back into the wheel cylinder when brake fluid flow stops. The air trap is transparent so the air bubbles can be seen. The air trap is such that pumping hydraulic fluid through it purges air in the air trap.

REFERENCES:
patent: 1084753 (1914-01-01), Owens
patent: 2611387 (1952-01-01), Legerski
patent: 2771093 (1956-01-01), Wilson
patent: 3889710 (1975-06-01), Brost
patent: 4479511 (1984-10-01), Holland
patent: 4651780 (1987-03-01), DiVicenzo
patent: 4804017 (1989-02-01), Knapp
patent: 4834140 (1989-05-01), Schmidt
patent: 4989636 (1991-02-01), Sulwer
Cal-Van Tools package and device entitle One-man brake bleeder, Jan. 1997.
Actron Mfg. Co. package (front and back) and device entitled SUNPRO brake bleeder kit, Jan. 1997.

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