Patents by Inventor John V. Castell-Evans

John V. Castell-Evans has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fluid supply apparatus including plural reservoirs and condition responsive control of pump drive motor by contaminant sensing probes
    Patent number: 4595341
    Abstract: An automobile hydraulic braking circuit comprises two reservoirs in addition to the main hydraulic fluid reservoir. One additional reservoir can replenish the other which in turn can replenish the main hydraulic reservoir. A peristaltic pump controls fluid flow to the main reservoir from the adjacent additional reservoir. Probes in the additional reservoirs operate in conjunction with control circuitry to inhibit operation of the pump to prevent contaminated fluid from being supplied to the main reservoir.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: June 17, 1986
    Assignee: Rolls-Royce Motors Limited
    Inventor: John V. Castell-Evans