Earth working – Overload shifting – Against spring return device
Patent
1999-05-28
2000-08-22
Pezzuto, Robert E.
Earth working
Overload shifting
Against spring return device
172414, 37232, E01H 504
Patent
active
061056804
ABSTRACT:
The present invention includes an angle blade assembly with a blade assembly pivotally connected to a subframe. In certain operating conditions, such as pushing material along the ground, a spring trip mechanism, including a plurality of springs, is connected between the blade assembly and the subframe. The springs are preset at a desired tension therebetween to control the pivotal movement of the blade assembly relative to the subframe when the blade assembly encounters variances in the ground elevation. When the angle blade assembly is used for a different operating function that does not require the spring trip mechanism, a locking device is connected between the blade assembly and the subframe. The locking device restricts the pivotal movement of the blade assembly relative to the subframe and, thereby, disables the control action of the springs. The disablement of the control action of the springs is accomplished without removal of the springs, saving the time and energy of an operator.
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Specification and Parts/Componenets for the Farmers' Factory Company (FFC) Snow/Utility Blades (no date).
Caterpillar S.A.R.L.
Charlton Diana L.
Pezzuto Robert E.
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