초록 ▼

A hinged snowplow includes a T-shaped support frame for attachment to a vehicle, the support frame having a free end. A cowling having a pair of extending plow blades pivotally secured thereto, is pivotally secured to the free end so as to pivot in a generally vertical plane about the free end. The

A hinged snowplow includes a T-shaped support frame for attachment to a vehicle, the support frame having a free end. A cowling having a pair of extending plow blades pivotally secured thereto, is pivotally secured to the free end so as to pivot in a generally vertical plane about the free end. The cowling has a first stop engageable with the support frame to limit pivotal movement of the cowling about the frame to a first or normal plowing position. A second stop on the cowling is engageable with the support frame to limit the pivotal movement of the cowling about the frame to a second or tipped position. A trip bias mechanism between the frame and the cowling biases the cowling and plow blades to the first position in which the blades are normally positioned for plowing. The cowling and blades are rotated against the trip bias mechanism toward the second, tipped position when the blades hit an obstacle.

대표청구항 ▼

A hinged snowplow for vehicles comprising a support frame for attachment to a vehicle, said support frame having a free end; a cowling pivotally secured to said free end; a pair of plow blades pivotally secured to and extending from said cowling; first stop means connected to said cowling and engage

A hinged snowplow for vehicles comprising a support frame for attachment to a vehicle, said support frame having a free end; a cowling pivotally secured to said free end; a pair of plow blades pivotally secured to and extending from said cowling; first stop means connected to said cowling and engageable with said support frame to limit the pivotal movement of said cowling about said frame to a first position; second stop means connected with said cowling and engageable with said support frame to limit the pivotal movement of said cowling about said frame to a second position; said cowling including two apex plate means for supporting plow blades thereon, said apex plate means forming an elongated vertical apex when said cowling is in said first position and having portions extending away from said apex and receiving said free end of said frame therebetween; pivot means extending between said apex plate means and said frame free end for pivotally securing said cowling to said free end of said frame such that said cowling is pivotable in a generally vertical plane about said free end of said frame; said cowling further including hinge means secured to and extending along said apex, said blades being mounted on said cowling by said hinge means; trip bias means between said frame and cowling to bias said cowling to said first position where said blades are positioned for plowing, said cowling being rotatable against said trip bias means toward said second position when said blades hit an obstacle.