Patents by Inventor David E. Bros

David E. Bros 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).

  • Fluid recovery device
    Patent number: 7059013
    Abstract: An apparatus and method for extracting soiled cleaning solution from carpets and other surfaces utilizing a low-profile pick-up head is disclosed. The apparatus includes a vacuum chamber or enclosed space positioned in a fluid recovery device to provide a uniform vacuum along the entire width of the device. Also disclosed is a low-profile push-pull fluid recovery device which includes a positive pressure chamber and a vacuum chamber in the push-pull head to distribute positive and vacuum pressures, respectively, along the width of the push-pull head. Methods for using such pick-up heads are also disclosed.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: June 13, 2006
    Assignee: Tennant Company
    Inventors: Larry D. Wydra, David E. Bros
  • Fluid recovery device
    Publication number: 20040045118
    Abstract: An apparatus and method for extracting soiled cleaning solution from carpets and other surfaces utilizing a low-profile pick-up head is disclosed. The apparatus includes a vacuum chamber or enclosed space positioned in a fluid recovery device to provide a uniform vacuum along the entire width of the device. Also disclosed is a low-profile push-pull fluid recovery device which includes a positive pressure chamber and a vacuum chamber in the push-pull head to distribute positive and vacuum pressures, respectively, along the width of the push-pull head. Methods for using such pick-up heads are also disclosed.
    Type: Application
    Filed: September 6, 2002
    Publication date: March 11, 2004
    Inventors: Larry D. Wydra, David E. Bros
  • Gas-liquid contacting apparatus with valved downcomer
    Patent number: 5478507
    Abstract: Air stripping apparatus with valved downcomers.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: December 26, 1995
    Assignee: Carbonair, Inc.
    Inventor: David E. Bros
  • Apparatus for air stripping contaminants from water
    Patent number: 5378267
    Abstract: A modular air stripper apparatus comprised of a plurality of stacked air stripping chambers.
    Type: Grant
    Filed: April 6, 1993
    Date of Patent: January 3, 1995
    Assignee: Carbonair Environmental Services, Inc.
    Inventors: David E. Bros, Sawang Notthakun