Swivel arm concrete placer

Details Swivel arm concrete placer Swivel arm concrete placer

1980-01-15

1981-04-21

Schwadron, Martin P.

Fluid handling

Systems

Articulated or swinging flow conduit

141232, B67D 560, B67D 564

Patent

active

042626960

ABSTRACT:
A concrete placing boom device includes a rail-mounted base, extensible outriggers and a jointed two-section cantilevered arm structure that supports a jointed two-section pipeline. Preferably, the inner arm section is pivotally mounted on the base for rotation about a vertical axis and the outer arm section is pivotally mounted on the inner arm section for rotation and angular elevation. The device is joined with pins for assembly and disassembly for easy transport.

REFERENCES:
patent: 2948306 (1960-08-01), Kuraeff
patent: 3014494 (1961-12-01), Scott et al.
patent: 3114392 (1963-12-01), Harper
patent: 3176730 (1965-04-01), Knight
patent: 3199898 (1965-08-01), Faccou
patent: 3439700 (1969-04-01), Prestor
patent: 3451427 (1969-06-01), Dollinger
patent: 3459222 (1969-08-01), McElroy
patent: 3605824 (1971-09-01), Madden et al.

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