Patents by Inventor David Gary McCrea

David Gary McCrea 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: 10039225
    Abstract: A land roller implement includes a wheel aligned with the respective gap between the inner roller and the outer roller of each wing in which the wheel is pivotal between a packing position in the working position of the rollers and a transport position supporting the rollers in the transport position of the implement. The wings can also include a drive motor associated with each transport wheel to drive forward rotation of the wheel for displacing the wings from the transport position to the working position without displacing the implement in a rearward direction. A levelling beam attachment and a seeding attachment can also optionally be used on the land roller implement. Optional latchable brace members pivotally supported on the wings may provide additional support to the wings when using the levelling beam attachment.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: August 7, 2018
    Assignee: AG Shield Ltd.
    Inventors: David Gary McCrea, Thomas Edward McCrea
  • Publication number: 20170055431
    Abstract: A land roller implement includes a wheel aligned with the respective gap between the inner roller and the outer roller of each wing in which the wheel is pivotal between a packing position in the working position of the rollers and a transport position supporting the rollers in the transport position of the implement. The wings can also include a drive motor associated with each transport wheel to drive forward rotation of the wheel for displacing the wings from the transport position to the working position without displacing the implement in a rearward direction. A levelling beam attachment and a seeding attachment can also optionally be used on the land roller implement. Optional latchable brace members pivotally supported on the wings may provide additional support to the wings when using the levelling beam attachment.
    Type: Application
    Filed: November 16, 2016
    Publication date: March 2, 2017
    Inventors: David Gary McCrea, Thomas Edward McCrea
  • Patent number: 9538698
    Abstract: A land roller implement includes a wheel aligned with the respective gap between the inner roller and the outer roller of each wing in which the wheel is pivotal between a packing position in the working position of the rollers and a transport position supporting the rollers in the transport position of the implement. The wings can also include a drive motor associated with each transport wheel to drive forward rotation of the wheel for displacing the wings from the transport position to the working position without displacing the implement in a rearward direction. A levelling beam attachment and a seeding attachment can also optionally be used on the land roller implement. Optional latchable brace members pivotally supported on the wings may provide additional support to the wings when using the levelling beam attachment.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: January 10, 2017
    Inventors: David Gary McCrea, Thomas Edward McCrea
  • Publication number: 20140338937
    Abstract: A land roller implement includes a wheel aligned with the respective gap between the inner roller and the outer roller of each wing in which the wheel is pivotal between a packing position in the working position of the rollers and a transport position supporting the rollers in the transport position of the implement. The wings can also include a drive motor associated with each transport wheel to drive forward rotation of the wheel for displacing the wings from the transport position to the working position without displacing the implement in a rearward direction. A levelling beam attachment and a seeding attachment can also optionally be used on the land roller implement. Optional latchable brace members pivotally supported on the wings may provide additional support to the wings when using the levelling beam attachment.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 20, 2014
    Inventors: David Gary McCrea, Thomas Edward McCrea
  • Patent number: 8820428
    Abstract: A land roller implement includes a wheel aligned with the respective gap between the inner roller and the outer roller of each wing in which the wheel is pivotal between a packing position in the working position of the rollers and a transport position supporting the rollers in the transport position of the implement. The wings can also include a drive motor associated with each transport wheel to drive forward rotation of the wheel for displacing the wings from the transport position to the working position without displacing the implement in a rearward direction. A leveling beam attachment and a seeding attachment can also optionally be used on the land roller implement. Optional latchable brace members pivotally supported on the wings may provide additional support to the wings when using the leveling beam attachment.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: September 2, 2014
    Inventors: David Gary McCrea, Thomas Edward McCrea
  • Publication number: 20110265699
    Abstract: A land roller implement includes a wheel aligned with the respective gap between the inner roller and the outer roller of each wing in which the wheel is pivotal between a packing position in the working position of the rollers and a transport position supporting the rollers in the transport position of the implement. The wings can also include a drive motor associated with each transport wheel to drive forward rotation of the wheel for displacing the wings from the transport position to the working position without displacing the implement in a rearward direction. A levelling beam attachment and a seeding attachment can also optionally be used on the land roller implement. Optional latchable brace members pivotally supported on the wings may provide additional support to the wings when using the levelling beam attachment.
    Type: Application
    Filed: October 29, 2010
    Publication date: November 3, 2011
    Inventors: David Gary McCrea, Thomas Edward McCrea
  • Patent number: 7040552
    Abstract: An applicator boom apparatus comprises an applicator boom extending laterally from a vehicle, and pivotally attached to the vehicle such that the boom can pivot up and down with respect to the vehicle. A kit provides a gauge member adapted to ride along a surface of the ground and support an outer portion of the boom such that the boom moves up and down with the gauge member as the gauge member rides along the ground, and also provides an active hydraulic source powering the shoulder hydraulic cylinder of the apparatus such that the shoulder hydraulic cylinder exerts an upward force on the boom such that a downward force exerted on the gauge member by the boom is reduced.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: May 9, 2006
    Inventors: David Gary McCrea, Thomas Edward McCrea
  • Publication number: 20040129798
    Abstract: An applicator boom apparatus comprises an applicator boom extending laterally from a vehicle, and pivotally attached to the vehicle such that the boom can pivot up and down with respect to the vehicle. A kit provides a gauge member adapted to ride along a surface of the ground and support an outer portion of the boom such that the boom moves up and down with the gauge member as the gauge member rides along the ground, and also provides an active hydraulic source powering the shoulder hydraulic cylinder of the apparatus such that the shoulder hydraulic cylinder exerts an upward force on the boom such that a downward force exerted on the gauge member by the boom is reduced.
    Type: Application
    Filed: October 15, 2003
    Publication date: July 8, 2004
    Inventors: David Gary McCrea, Thomas Edward McCrea
  • Patent number: 6457302
    Abstract: A crop divider for separating crop plants on one side of a line of travel from those on an opposite side of the line of travel and pushing the plants away from the line of travel to allow passage of an implement portion along a forward travel path while reducing contact of the plants with the implement portion. The crop divider comprises a vertically oriented V-shaped member adapted for mounting on the implement forward of the implement portion, the V-shaped member having an apex located substantially in the center of the travel path and facing forward, and right and left legs extending rearward and outward beyond edges of the travel path. A vertically oriented cutter is mounted on a forward edge of the apex of the V-shaped member. The crop divider is particularly suited to a canola pusher for lodging crops of the Genus Brassica.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: October 1, 2002
    Inventors: Thomas Edward McCrea, David Gary McCrea