Patents by Inventor Thomas E. DeMarco

Thomas E. DeMarco 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: 4786299
    Abstract: A unique vacuum loader is provided with a special silencer base to quietly, efficiently, and effectively remove particulate matter, debris and waste from industrial plants and other locations. The silencer base comprises a muffler and sound abatement control assembly with a composite sound attenuating chamber. The sound attenuating chamber has a zigzag channel to decrease and dampen operational noises to safe and comfortable levels. The silencer base has a top plate to support and dampen vibrations of the vacuum pump and motor.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: November 22, 1988
    Inventor: Thomas E. DeMarco