Patents by Inventor William C. Jankowski

William C. Jankowski 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: 5560075
    Abstract: A wet or dry tank type vacuum cleaner assembly having a low center of gravity. The electric motor and blower are mounted in a housing which is itself mounted at the base of the assembly in substantially the same horizontal plane as the base of the vacuum cleaner tank. The housing is partitioned to enclose the fan and the motor in separate chambers with provision for entrance and exit of cooling air to and from the chamber enclosing the motor and provision to exhaust air from the blower from the chamber enclosing the blower. Air is evacuated from the tank through a filter at the top of the tank and is conducted to the blower intake by a conductor assembly. The conductor assembly connects to the structure surrounding the blower intake in a manner that is air tight and liquid tight and excludes entry of liquid and debris into the blower intake.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: October 1, 1996
    Inventor: William C. Jankowski
  • Patent number: 5511280
    Abstract: A vacuum cleaner of the wet or dry tank type having a vacuum inlet introduced at the base of the tank and an internal conduit conducting the flow of matter from the vacuum inlet to the top of the tank and discharging matter from the top of the tank downward into the accumulation area of the tank, the entry of the vacuum inlet through the wall of the tank sealed to preserve liquid tight and air tight integrity of the wall of the tank, a flexible external vacuum hose connecting to the vacuum inlet at the base of the tank.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: April 30, 1996
    Inventor: William C. Jankowski