Boom-stick adapter for two-piece boom

Details Boom-stick adapter for two-piece boom Boom-stick adapter for two-piece boom

1976-04-16

1977-06-14

Spar, Robert J.

214141, E02F 332

Patent

active

040292258

ABSTRACT:
A material handling apparatus having a stub boom provided with structure for connecting a fore boom thereto to form a two-piece boom, structure for selectively swingably positioning the stub boom, a work implement, and an improved joint structure for swingably connecting the work implement to the stub boom. The improved joint is defined by an adapter having a mounting portion and a joint portion swingably interconnected. Mounting structure is provided for cooperating with the stub boom connecting structure for mounting the adapter mounting portion to the stub boom, and mounting structure is provided for mounting the work implement to the joint portion of the adapter. A positioner is provided for selectively swingably positioning the joint portion of the adapter for correspondingly selectively positioning the work implement.

REFERENCES:
patent: 3358859 (1967-12-01), Przybylski
patent: 3977148 (1976-08-01), Ranini

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