| 摘要 |
A disc opener assembly and method, the assembly mounted to a tool support member connected to a work vehicle for opening a seed trench in the ground upon which the vehicle moves, the opener assembly including a disc member and at least some type of fastening member where the disc member includes a substantially flat circumferential portion, an intermediate portion and a recessed portion that forms a recess wherein, when the fastening member is used to secure the disc member to the support member, no part of the fastening member extends from the recess and the portion of the fastening member within the recess is accessible adjacent the intermediate member to facilitate fastening and unfastening.
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