Patents by Inventor Lewis D. Bartlett

Lewis D. Bartlett 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).

  • Fuel supply system
    Patent number: 4069841
    Abstract: The service life of a filter utilized for the purification of fuel oil drawn from a storage vessel for transfer to a burner nozzle is increased by providing a holding tank, positioned between said filter and said nozzle, which permits the recycling of already filtered fuel oil. A float valve in said holding tank facilitates controlled delivery of fuel to said burner nozzle, and regulates the amount of fresh fuel drawn from the storage vessel.
    Type: Grant
    Filed: September 3, 1976
    Date of Patent: January 24, 1978
    Inventor: Lewis D. Bartlett