Folding boom

Details Folding boom Folding boom

1976-06-28

1977-08-30

Blunk, Evon C.

Fluid sprinkling, spraying, and diffusing

With mobile tank-type supply means

Spray boom or bar type distributor

137615, 212 8R, 239168, B05B 120

Patent

active

040449521

ABSTRACT:
A foldable two-piece boom is provided with an outer boom wing pivoted about an upright axis and being slidable relative to an inner boom arm which is pivoted to a frame member for both horizontal and vertical motion. A spring and cables in a mounting mechanism are arranged to permit the outer wing to pivot either forwardly or rearwardly when contacted by an abutment and thereafter gently returned to a neutral position parallel to the longitudinal axis of the inner boom arm at a controlled rate which minimizes impact forces. The spring and cables are also arranged to permit pivotal movement of the boom in a vertical plane while maintaining the inner and outer sections in vertical planar alignment. In response to the horizontal swinging of the boom through 90.degree. from its extended to its folded transport position, the spring and cables cause the outer wing to fold in the opposite direction of the arm to firmly clamp against the inner arm.

REFERENCES:
patent: 2684865 (1954-07-01), Lattner
patent: 3565341 (1971-02-01), Burroughs

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