Jack for a working implement and method
View Patent ↗Jack for raising and lowering a working implement such as hydraulically driven snow blades or other utilitarian accessories. Actuation of the jack allows for proper vertical alignment of the lift assembly for engagement to a vehicle chassis. Once engaged, the jack can be actuated into an inoperative position until the lift assembly is to be removed from the chassis.
1. A method of retracting a jack attached to a lift assembly relative to a substrate, said method comprising:
providing a lift assembly comprising a frame;
providing a linking member coupled to said jack dedicated to lifting said lift assembly;
providing a jack having a first portion coupled to said frame of said lift assembly, and a second portion spaced from said first portion and contacting said substrate, said jack being movable relative to said substrate;
actuating said linking member thereby causing movement of said jack out of contact with said substrate; and
continuing actuation of said linking member to cause said jack to contact said frame and thereby raise said lift assembly.
2. The method of claim 1 , wherein said jack is caused to move towards a horizontal position relative to said substrate so as to retract said jack.
3. The method of claim 1 , wherein said lift assembly must be in a lowered position before said jack can be deployed.
4. The method of claim 1 , further comprising providing a manual actuator, and wherein stored energy is created in said manual actuator as said jack moves out of contact with said substrate when said linking member is actuated.
5. The method of claim 4 , wherein said stored energy in said manual actuator is used to deploy said jack.
6. The method of claim 1 , further comprising providing a lifter cylinder coupled to said jack, and wherein actuation of said linking member to retract said jack causes said lifter cylinder to compress, causing energy to be stored in said lifter cylinder.
7. The method of claim 6 , further comprising releasing said stored energy in said lifter cylinder to deploy said jack.
8. The method of claim 1 , further comprising locking said jack in said undeployed position.
9. The method of claim 1 , further comprising providing a spring, wherein said actuating of said linking member to retract said jack causes said spring to compress, causing energy to be stored in said gas spring.
10. The method of claim 9 , further comprising releasing said stored energy in said spring to deploy said jack.
11. The method of claim 9 , wherein said spring comprises a gas spring.