Patents by Inventor Melvin Stokes

Melvin Stokes 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 drain system for internal combustion engines
    Patent number: 5257678
    Abstract: A used oil drain system including a valve for being attached to the oil sump of an internal combustion engine; a used oil reservoir for being mounted relative to the internal combustion engine; and a passageway extending between the valve and the used oil reservoir for allowing used oil passing through the valve from the oil sump of the internal combustion engine when the valve is opened to pass to the used oil reservoir for storage. The valve may be screwed to the existing used oil drain port of the sump. The used oil reservoir may include a rigid container that is removably attached relative to the internal combustion engine.
    Type: Grant
    Filed: November 27, 1992
    Date of Patent: November 2, 1993
    Inventor: Melvin Stokes