Patents by Inventor Frederick D. Altman

Frederick D. Altman 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).

  • Oil recovery system for two cycle diesel engines
    Patent number: 4512293
    Abstract: A reservoir is provided with a mounting flange arrangement for reservoir attachment to an engine block to receive engine oil accumulating in an engine air box. A pump on the reservoir is intermittently activated by the vehicle electrical system to pump reservoir contents back to the engine oil sump. A reservoir outlet conduit terminates coupled to an engine dipstick opening to utilize existing block openings.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: April 23, 1985
    Inventors: Steven C. Mast, Frederick D. Altman