Patents by Inventor Glenn D. Liubakka

Glenn D. Liubakka 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).

  • Patent number: 8205361
    Abstract: A walk-behind trenching vehicle incorporating a trenching boom with an endless trenching chain. The trenching boom may be connected to a forward end of the vehicle via a dual pivot mechanism. The boom may be movable between an operating position and a transport position via a single actuator, e.g., hydraulic cylinder.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: June 26, 2012
    Assignee: The Toro Company
    Inventors: John P. Azure, Tanner L. Erickson, Glenn D. Liubakka
  • Publication number: 20110283570
    Abstract: A walk-behind trenching vehicle incorporating a trenching boom with an endless trenching chain. The trenching boom may be connected to a forward end of the vehicle via a dual pivot mechanism. The boom may be movable between an operating position and a transport position via a single actuator, e.g., hydraulic cylinder.
    Type: Application
    Filed: August 1, 2011
    Publication date: November 24, 2011
    Applicant: The Toro Company
    Inventors: John P. Azure, Tanner L. Erickson, Glenn D. Liubakka
  • Patent number: 8015733
    Abstract: A walk-behind trenching vehicle incorporating a trenching boom with an endless trenching chain. The trenching boom may be connected to a forward end of the vehicle via a dual pivot mechanism. The boom may be movable between an operating position and a transport position via a single actuator, e.g., hydraulic cylinder.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: September 13, 2011
    Assignee: The Toro Company
    Inventors: John P. Azure, Tanner L. Erickson, Glenn D. Liubakka
  • Publication number: 20100313452
    Abstract: A walk-behind trenching vehicle incorporating a trenching boom with an endless trenching chain. The trenching boom may be connected to a forward end of the vehicle via a dual pivot mechanism. The boom may be movable between an operating position and a transport position via a single actuator, e.g., hydraulic cylinder.
    Type: Application
    Filed: August 26, 2010
    Publication date: December 16, 2010
    Applicant: The Toro Company
    Inventors: John P. Azure, Tanner L. Erickson, Glenn D. Liubakka
  • Patent number: 7805864
    Abstract: A walk-behind trenching vehicle incorporating a trenching boom with an endless trenching chain. The trenching boom may be connected to a forward end of the vehicle via a pivot joint that is offset from a drive axis of the trenching chain. The boom may be movable between an operating position and a transport position via a single actuator, e.g., hydraulic cylinder.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: October 5, 2010
    Assignee: The Toro Company
    Inventors: John P. Azure, Tanner L. Erickson, Glenn D. Liubakka
  • Patent number: 7644524
    Abstract: A walk-behind trenching vehicle incorporating a trenching boom with an endless trenching chain. The trenching boom may be connected to a forward end of the vehicle via a pivot joint that is offset from a drive axis of the trenching chain. The boom may be movable between an operating position and a transport position via a single actuator, e.g., hydraulic cylinder.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: January 12, 2010
    Assignee: The Toro Company
    Inventors: John P. Azure, Glenn D. Liubakka
  • Publication number: 20090077836
    Abstract: A walk-behind trenching vehicle incorporating a trenching boom with an endless trenching chain. The trenching boom may be connected to a forward end of the vehicle via a pivot joint that is offset from a drive axis of the trenching chain. The boom may be movable between an operating position and a transport position via a single actuator, e.g., hydraulic cylinder.
    Type: Application
    Filed: December 5, 2008
    Publication date: March 26, 2009
    Applicant: The Toro Company
    Inventors: John P. Azure, Tanner L. Erickson, Glenn D. Liubakka
  • Publication number: 20090064543
    Abstract: A walk-behind trenching vehicle incorporating a trenching boom with an endless trenching chain. The trenching boom may be connected to a forward end of the vehicle via a pivot joint that is offset from a drive axis of the trenching chain. The boom may be movable between an operating position and a transport position via a single actuator, e.g., hydraulic cylinder.
    Type: Application
    Filed: September 11, 2007
    Publication date: March 12, 2009
    Inventors: John P. Azure, Tanner L. Erickson, Glenn D. Liubakka
  • Patent number: 7032368
    Abstract: An attachment for releasably coupling a conduit or duct on a mower to the grass bagger inlet of a grass bagger. The duct has a front end connected to a cutting deck carried on the mower and a rear end connected to the grass bagger inlet. The duct is flexible and includes a spiral rib on an outer diameter of the duct. The grass bagger inlet includes inwardly protruding tabs on an inner diameter of the grass bagger inlet. When the rear end of the duct is pushed into the grass bagger inlet, the tabs on the grass bagger inlet engage the spiral rib on the duct in a ratchet type engagement to releasably hold the duct in the grass bagger inlet.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: April 25, 2006
    Assignee: The Toro Company
    Inventors: Edric C. Funk, Glenn D. Liubakka, Frank M. Gangi
  • Publication number: 20040221563
    Abstract: An attachment for releasably coupling a conduit or duct on a mower to the grass bagger inlet of a grass bagger. The duct has a front end connected to a cutting deck carried on the mower and a rear end connected to the grass bagger inlet. The duct is flexible and includes a spiral rib on an outer diameter of the duct. The grass bagger inlet includes inwardly protruding tabs on an inner diameter of the grass bagger inlet. When the rear end of the duct is pushed into the grass bagger inlet, the tabs on the grass bagger inlet engage the spiral rib on the duct in a ratchet type engagement to releasably hold the duct in the grass bagger inlet.
    Type: Application
    Filed: May 8, 2003
    Publication date: November 11, 2004
    Inventors: Edric C. Funk, Glenn D. Liubakka, Frank M. Gangi