Rotator

Details Rotator Rotator

1974-06-06

1976-06-29

Schwadron, Martin P.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

37183R, 92 2, 173152, 214138R, 285136, B25B 100, B66C 100

Patent

active

039662497

ABSTRACT:
A rotator of the kind intended to be positioned between a crane hoisting boom and a lifting tool suspended in said boom and provided with hydraulic tool actuating means. The rotator is mounted on a vertical shaft in a manner permitting it some flexion sidewise without occurrence of fractures or breaks causing leakage of the pressurized medium and also in a manner making exchange of the sealing rings easy in that the rotator need not be dismantled for this exchange.

REFERENCES:
patent: 2660816 (1953-12-01), Maxwell
patent: 2998084 (1961-08-01), Johnson et al.
patent: 3101150 (1963-08-01), Janson et al.
patent: 3301334 (1967-01-01), Odgers et al.
patent: 3357312 (1967-12-01), Rogov et al.
patent: 3390728 (1968-07-01), Bartos
patent: 3435774 (1969-04-01), Parrett
patent: 3592570 (1971-07-01), Bartos
patent: 3599801 (1971-08-01), Roll et al.
patent: 3623558 (1971-11-01), Brown
patent: 3800887 (1974-04-01), West
patent: 3914886 (1975-10-01), Berg et al.

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