Apparatus for changing axle loads of a crane vehicle combination

Details Apparatus for changing axle loads of a crane vehicle combination Apparatus for changing axle loads of a crane vehicle combination

1977-04-05

1979-05-15

Mitchell, David M.

Motor vehicles

Vehicle trains

Motorized trailer

212 46R, 280406R, B62D 5304

Patent

active

041543165

ABSTRACT:
A load changing apparatus decreases the load on a supporting trailer and increases the load on the axles of main drive vehicle of a crane when desired. The crane's hydraulic system includes a two position valve which cuts off the flow of hydraulic fluid from a crane position controlling valve and directs fluid from a pump to the crane arm lifting cylinder. Limit switches or pressure sensitive valves can be used to limit the amount of movement which is caused by the fluid from the pump.

REFERENCES:
patent: 2859049 (1958-11-01), Hyler
patent: 3224597 (1965-12-01), Whitmire
patent: 4039085 (1977-08-01), Livengood

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