Spring cushion chisel plow shank assembly

Details Spring cushion chisel plow shank assembly Spring cushion chisel plow shank assembly

1983-06-23

1985-06-04

Johnson, Richard J.

Earth working

Tool, standard or connection

Spring biased or formed tool or tool part

A01B 6104, A01B 3524

Patent

active

045208786

ABSTRACT:
A spring cushion assembly for a chisel plow shank is provided that eliminates the transmission of force from the shank and assembly spring to the tension rod of the assembly in directions transverse to the axis of the tension rod, thereby prolonging the life of the entire assembly. The spring cushion shank assembly includes a support frame pivotally supporting a shank, a spring interposed between a portion of the frame and the shank, and a tension rod received within the spring in non-contacting relationship. A seat supports the lower end of the spring and minimizes the tendency of the spring to buckle by coupling the spring to the shank about a pivot axis and by continuously aligning the longitudinal axis of the spring in intersecting relationship with the pivot axis as the spring is compressed.

REFERENCES:
patent: 1041975 (1912-10-01), Dennis
patent: 2935144 (1960-05-01), Graham
patent: 3700038 (1972-10-01), Essex

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