Patents by Inventor Michael E. Drager

Michael E. Drager 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).

  • Rotary flow control valve
    Patent number: 5162080
    Abstract: A rotary flow control valve for controlling the cycles of a multicycle liquid treatment apparatus such as a water softener. A pair of rotatable, slotted, circular disks connected to rotate with each other are located in a pair of aligned interconnected cylindrical housings. Rotation of the disks controls the flow of liquid through various paths in the valve. Clamps and clips are provided securing together the parts of the assembled valve.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: November 10, 1992
    Assignee: Ecowater Systems, Inc.
    Inventors: Michael E. Drager, Bruce Gillette, Edward J. Tischer
  • Water softener
    Patent number: D328330
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: July 28, 1992
    Assignee: Ecowater Systems, Inc.
    Inventors: Michael E. Drager, Edward J. Tischler, Dennis G. Winberg
  • Water softener
    Patent number: D328331
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: July 28, 1992
    Assignee: Ecowater Systems, Inc.
    Inventors: Michael E. Drager, Edward J. Tischler, Dennis G. Winberg
  • Water softener control and indicating panel
    Patent number: D336051
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: June 1, 1993
    Assignee: Ecowater Systems, Inc.
    Inventors: Michael E. Drager, Dennis G. Winberg, Jeffrey A. Zimmerman, John R. Nelson
  • Bypass valve for a liquid treatment tank
    Patent number: D337633
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: July 20, 1993
    Assignee: Ecowater Systems, Inc.
    Inventors: Michael E. Drager, Edward J. Tischler