Tool Flexed To Change Contour Patents (Class 172/682)
  • Patent number: 7543657
    Abstract: A tillage apparatus including a frame having tillers, land wheels supporting the frame, and press wheels on the frame is disclosed. In one form, the frame has a forward section and a rearward section supporting the press wheels. The rearward section can pivot radially with respect to the direction of movement of the forward section. In another form, the frame includes a linkage assembly connected to the rearward section. An inner wheel support gang having press wheels is attached to a pivoting mounting bracket of the linkage assembly such that the inner wheel support gang can pivot vertically. In another form, the apparatus includes a weight transfer device including a linkage connecting a boom and the forward section. A biasing means pivotally connected to the forward section and to the linkage distributes weight from the boom to the forward section to the rearward section and to the press wheels.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: June 9, 2009
    Assignee: CNH Canada, Ltd.
    Inventor: Terrance A. Friggstad
  • Patent number: 6484812
    Abstract: A bearing assembly (10) is taught including a housing (14), a shaft (18) supported within the housing (14) and having an outboard end extending through an opening in an end of the housing (14), a bearing (16) disposed between the shaft (18) and the housing (14) to permit rotation of the shaft (18) within the housing (14); and a harrow engaging member (20), such as a pair of diametrically opposed protrusions or a pair of apertured plates, mounted on the housing (14) and positioned either a) diametrically adjacent the bearing or b) between the bearing and the outboard end of the shaft. A harrow including the bearing assembly (10) is also taught.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: November 26, 2002
    Assignee: Phoenix Rotary Equipment Ltd.
    Inventor: Russell K. Clark