| 摘要 |
A plow blade assembly for clearing a surface during a plowing operation comprises a plow blade having a front and rear surface and a lower edge. The plow blade is pivotally supported on a support frame for movement between a forward and a retracted position. The plow blade is normally resiliently retained in the forward position. An actuator is flexibly connected to the plow blade so that the position of the blade can be selectively varied and maintained at a location between the forward and retracted positions.
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