Patents by Inventor Ronald Tatters

Ronald Tatters 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).

  • Reversing low pressure lubricating valve
    Patent number: 4389922
    Abstract: A lubricating valve for a moveable piston, the valve supplying lubricant at low pressure and being reversible automatically in response to a reversal of the higher pressure which drives the piston.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: June 28, 1983
    Assignee: Her Majesty the Queen in right of Canada as represented by the Minister of Defence
    Inventors: Ronald Tatters, John E. Dolman, Donald R. Howell, deceased