Patents by Inventor Bart W. Ewald

Bart W. Ewald 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).

  • Patent number: 5489042
    Abstract: The present invention provides a way for the do-it-yourself oil and filter changer to safely and cleanly drain used oil from the filter, then seal and store both filter and drained filter oil in the same container that crankcase oil is collected and stored in while keeping the drained filter dry and separate from the drained and collected oil. The invention solves a recent problem that has become apparent as used oil filters have become a culprit of land and water pollution. By allowing the do-it-yourselfer a convenient, safe, clean, and economical way to manage his used oil filter along with his used oil, it hampers the tendency to improperly dispose of these recyclable wastes by allowing more convenient and cleaner transport of these wastes to a collection center. This reusable container also eliminates the disposable items currently being used to transport used oil filters, thus eliminating these oily wastes from the wastestream.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: February 6, 1996
    Inventor: Bart W. Ewald
  • Patent number: 5421381
    Abstract: The present invention provides a way for the do-it-yourself oil and filter changer to safely and cleanly drain used oil from the filter, and sealing and storing both filter and drained filter oil in the same container that crankcase oil is stored while keeping the drained filter dry and separate from the drained and collected oil. The invention solves a recent problem that has become apparent as used oil filters have become a culprit of land and water pollution. By allowing the do-it-yourselfer a convenient, safe and clean means to manage his used oil filter along with his used oil, it hampers the tendency to improperly dispose of these recyclable wastes by allowing more convenient and cleaner transport of these wastes to a collection center. This reusable container also eliminates the disposable items currently being used to transport used oil filters, thus eliminating these oily wastes from the wastestream.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: June 6, 1995
    Inventor: Bart W. Ewald