Patents by Inventor Robert M. Barry

Robert M. Barry 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).

  • Filter system for wet vacuum cleaning apparatus
    Patent number: 5151181
    Abstract: The liquid filter assembly including a filter housing with an inlet below a prescribed external liquid level and having a generally cylindrical filter unit inside it with reusable filter elements which effectively operate at low pressure drops and permitting bypass liquid to recirculate within the filtered section without passing through the filter element and providing a filter support frame having the filter element supported thereon to provide a changeable filter assembly unit sealingly mounted within the housing.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: September 29, 1992
    Assignee: CFR Corporation
    Inventor: Robert M. Barry
  • Backflush filter system with insert member diffusing filtering and backflush flow
    Patent number: 5114574
    Abstract: A back flush filter system for a cleaning apparatus which includes a hollow filter member with a flow diffusing member inserted therein to cause the flow through the filter to be diffused into a substantially circumferential uniform flow passage through the entire area of the screen in both the filtering mode and the back flow mode of operation and including an atmospheric air vent to permit air entrapped within liquid flow system to escape and thus maintain a substantially air free liquid flow system.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: May 19, 1992
    Assignee: CFR Corporation
    Inventor: Robert M. Barry
  • Electric motor starting circuit
    Patent number: 5077823
    Abstract: The invention provides a cushioning control circuit which restricts the initial flow of current to a D.C. permanent magnet motor by providing a neon control lamp in series with a pair of triac control circuits which drops the initial voltage imposed on the motor windings.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: December 31, 1991
    Assignee: CFR Corporation
    Inventors: Robert M. Barry, James R. Hilmanowski