Cleaning and liquid contact with solids – Processes – Including use of vacuum – suction – or inert atmosphere
Patent
1976-01-07
1977-04-12
Bashore, S. Leon
Cleaning and liquid contact with solids
Processes
Including use of vacuum, suction, or inert atmosphere
134 22R, 134 24, 134 40, 137 15, 188352, B08B 704, B08B 906
Patent
active
040173291
ABSTRACT:
A method of cleaning and replenishing vehicle hydraulic brake systems is provided which includes opening all of the bleeder screws at the outlet end of the brake system and allowing the old brake fluid to flow from the brake system. Liquid solvent dichlorodifluromethane is then injected into the brake system under pressure at the master cylinder and allowed to flow through the system and out the bleeder screws. As the solvent enters the brake system, it wil mix with any remaining brake fluid and water in the system and, upon vaporization, will remove the remaining brake fluid and water from the system. When the solvent is observed flowing out of the bleeder screws, the solvent is shut off at the master cylinder and the bleeder screws are closed. A vacuum is then applied to the brake system at the master cylinder to vaporize and remove any solvent trapped in the system and to remove all air from the system. While the vacuum is maintained, new brake fluid is injected under pressure into the brake system through the master cylinder until the brake system is filled with new brake fluid. The connection to the master cylinder is then removed and the hydraulic brake system is closed.
REFERENCES:
patent: 1825013 (1931-09-01), Patton
patent: 2295539 (1942-09-01), Beach
patent: 2348465 (1944-05-01), Geiringer
patent: 3154087 (1964-10-01), Beaver
Bashore S. Leon
Fisher Richard V.
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