Patents by Inventor Hubert G. Dukowski

Hubert G. Dukowski 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).

  • Portable air filtration device
    Patent number: 4478216
    Abstract: There is provided a portable breathing assist comprising an external housing and an internal scroll housing within the external housing. The scroll housing has a central inlet for air and a tangential outlet for air. A radial impeller is rotatably mounted within the scroll housing for moving air from the inlet to the outlet, and an electrical motor within the external housing but outside the scroll housing rotates the impeller. An air manifold within the external housing is provided to define a passageway for air from at least one opening to a central inlet, along which air can travel without encountering the electrical motor. Filter means are provided at the at least one opening.
    Type: Grant
    Filed: April 13, 1982
    Date of Patent: October 23, 1984
    Assignee: H.G.D. Enterprises Ltd.
    Inventor: Hubert G. Dukowski
  • Portable air filtration unit
    Patent number: D271338
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: November 8, 1983
    Inventor: Hubert G. Dukowski