Patents by Inventor Michael Steward Wilmo

Michael Steward Wilmo 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).

  • Self cleaning conveyor
    Patent number: 7281625
    Abstract: Disclosed herein is a method and apparatus for a street sweeper having a conveyor assembly. The conveyor assembly has a pair of rollers and a conveyor belt connected therebetween. The conveyor assembly is provided with debris skirts to lift the edge of the conveyor belt to prevent debris from traveling over the edge of the conveyor belt. The conveyor belt is formed into a concave orientation. The debris skirts is also connected to a rub rail to provide a dynamic seal along the length of the conveyor belt edges. The conveyor assembly is also provided with a roller scraper for removing debris accumulated upon the rollers. The roller scraper is adapted to envelop a portion of the roller. The conveyor assembly is also provided with a liquid delivery system for assisting in the removal of debris from the roller.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: October 16, 2007
    Assignee: Tennant
    Inventors: Michael Steward Wilmo, Joseph Kenneth Krueger
  • Self cleaning conveyor with roller scraper and debris reduction skirt
    Patent number: 7159706
    Abstract: Disclosed herein is a method and apparatus for a street sweeper having a conveyor assembly. The conveyor assembly has a pair of rollers and a conveyor belt connected therebetween. The conveyor assembly is provided with debris skirts to lift the edge of the conveyor belt to prevent debris from traveling over the edge of the conveyor belt. The conveyor belt is formed into a concave orientation. The debris skirts is also connected to a rub rail to provide a dynamic seal along the length of the conveyor belt edges. The conveyor assembly is also provided with a roller scraper for removing debris accumulated upon the rollers. The roller scraper is adapted to envelop a portion of the roller. The conveyor assembly is also provided with a liquid delivery system for assisting in the removal of debris from the roller.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: January 9, 2007
    Assignee: Tennant Company
    Inventors: Michael Steward Wilmo, Joseph Kenneth Krueger
  • Self cleaning conveyor with roller scraper and debris reduction skirt
    Patent number: 7073661
    Abstract: Disclosed herein is a method and apparatus for a street sweeper having a conveyor assembly. The conveyor assembly has a pair of rollers and a conveyor belt connected therebetween. The conveyor assembly is provided with debris skirts to lift the edge of the conveyor belt to prevent debris from traveling over the edge of the conveyor belt. The conveyor belt is formed into a concave orientation. The debris skirts is also connected to a rub rail to provide a dynamic seal along the length of the conveyor belt edges. The conveyor assembly is also provided with a roller scraper for removing debris accumulated upon the rollers. The roller scraper is adapted to envelop a portion of the roller. The conveyor assembly is also provided with a liquid delivery system for assisting in the removal of debris from the roller.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: July 11, 2006
    Assignee: Tennant
    Inventors: Michael Steward Wilmo, Joseph Kenneth Krueger