Patent ID: 7669536

Claim:
A ground engaging apparatus comprising: a. a toolbar, wherein said toolbar is adapted to be coupled to a motive source; b. a paired single disc opener unit affixed to said toolbar, wherein said paired single disc opener unit comprises: i. a set of four-bar parallel linkages, wherein said set of four-bar parallel linkages is pivotable with respect to said toolbar at a first end of said set of four-bar parallel linkages; ii. a support frame, wherein said support frame is rotatably coupled with said set of four-bar parallel linkages at a second end of said set of four-bar parallel linkages; iii. a left opener disc rotatably coupled to said support frame, wherein said left opener disc is angled with respect to the direction of travel of said ground engaging apparatus so as to form a furrow in the ground surface; iv. a right opener disc rotatably coupled to said support frame, wherein said right opener disc is angled with respect to the direction of travel of said ground engaging apparatus so as to form a furrow in the ground surface, wherein said left opener disc and said right opener disc are laterally spaced from one another by a distance sufficient to form adjacent furrows between 5 and 9 inches apart, and wherein a line of symmetry exists between said left opener disc and said right opener disc along the direction of travel of said ground engaging apparatus; and, v. a depth regulating member, wherein the vertical position of said depth regulating member is fixed with respect to said support frame, said left opener disc, and said right opener disc, and wherein said depth regulating member is positioned between said left opener disc and said right opener disc.