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US 2009/0255697 A1Published application
Opener disk blade scraper hinge geometry to maintain contact with deflected disk blade
AssigneeDeere & Company
InventorMichael E. Friestad
Life of this patent
Estimating the term…
Abstract
An agricultural machine includes a disk blade assembly having a hub and a disk blade mounted to the hub. The hub has a perimeter. The disk blade is deflectable by ground forces in an area outside of the hub. A scraper assembly includes a mount, a scraper blade, and a hinge pivotally interconnecting the scraper blade with the mount. The hinge has an axis of rotation which passes through a point generally at or near a bottom of the hub perimeter, and generally coincident with the disk blade.
Claims15
An agricultural machine, comprising:
- a disk blade assembly including a hub and a disk blade mounted to said hub, said hub having a perimeter;
- and
- a scraper assembly including:
- a mount;
- a scraper blade;
- and
- a hinge pivotally interconnecting said scraper blade with said mount, said hinge having an axis of rotation which lies generally tangent to said perimeter of said disk blade hub.
4 more elements
An agricultural machine, comprising:
- a disk blade assembly including a hub and a disk blade mounted to said hub, said hub having an axis of rotation and a perimeter;
- and
- a scraper assembly including:
- a mount;
- a scraper blade;
- and
- a hinge pivotally interconnecting said scraper blade with said mount, said hinge axis of rotation generally intersecting with a substantially vertical line passing through said hub axis of rotation and coincident with said disk blade at an intersection point.
4 more elements
An agricultural machine, comprising:
- a disk blade assembly including a hub and a disk blade mounted to said hub, said hub having a perimeter, said disk blade being deflectable by ground forces in an area outside of said hub;
- and
- a scraper assembly including:
- a mount;
- a scraper blade;
- and
- a hinge pivotally interconnecting said scraper blade with said mount, said hinge having an axis of rotation which passes through a point generally at or near a bottom of said hub perimeter, and generally coincident with said disk blade.
4 more elements
Dependencies are inferred from the claim text.