Vehicle plow lift device

A lift device mounted on a vehicle for raising, lowering and suspending a vertically movable assembly mounted on the vehicle, comprising:

• a primary lift arm in pivotal relation to the vehicle and having a distal end disposed generally above the assembly;
• a secondary lift arm in pivotal relation to said primary lift arm and having a free end;
• a hanging mechanism securing said assembly to said free end to suspend said assembly from said free end;
• a positioning mechanism for raising and lowering at least one of said lift arms to raise and lower the assembly and to hold the assembly off of the ground on which the vehicle travels;
• and
• a dampener pivotally connected to said secondary lift arm for attenuating resultant forces originating at said assembly and transmitted from said secondary lift arm, said dampener being disposed at the location where said forces already received by said secondary lift arm are transmitted from said secondary lift arm, whereby said forces transmitted from said secondary lift arm are absorbed preventing transmission of said forces to said vehicle.

A lift device mounted to a vehicle for raising a load to a transport position or lowered to an operating position, the lift device being disposed above and connected to said load, said lift device comprising:

• a primary lift arm pivotally mounted on said vehicle and having a distal end;
• a secondary lift arm mounted in pivotal relation to said primary lift arm, said secondary lift arm having a first end pivotally secured on the lift device and a second end secured to said load;
• a positioning means connected to said primary lift arm for raising and lowering said assembly to said transport and operating positions;
• a spring having one end secured to said distal end of said primary lift arm and a second end secured to said secondary lift arm,
• a dampener having one end pivotally mounted to said secondary lift arm and another end secured to said primary lift arm;
• said dampener and said spring acting in unison to attenuate resultant forces originating at said assembly and transmitted from said secondary lift arm to said primary lift arm,
• whereby said forces are absorbed preventing transmission of said forces to said vehicle.

A lift device mounted to a vehicle for raising a load to a transport position or lowered to an operating position, the lift device being disposed above and connected to said load, said lift device comprising:

• a generally L-shaped primary lift arm pivotally mounted on said vehicle and having a distal end;
• a secondary lift arm disposed above said primary lift arm and having a first end pivotally mounted on said primary lift arm and a second end secured to said load;
• a positioning means connected to one of said lift arms for raising and lowering said connected lift arm to said transport and operating positions;
• a compression spring having a lower end secured to said distal end of said primary lift arm and an upper end secured to said secondary lift arm,
• said primary lift arm having a leg extending generally vertically for laterally supporting said compression spring,
• said compression spring attenuating resultant forces originating at said load and transmitted from said secondary lift arm to said primary lift arm,
• whereby said forces are absorbed preventing transmission of said forces to said vehicle.