Electrical safety control device for a variable radius crane

Details Electrical safety control device for a variable radius crane Electrical safety control device for a variable radius crane

1974-06-03

1976-11-09

Spar, Robert J.

Traversing hoists

Overhead

Cable

340267C, 212 55, B66C 1348

Patent

active

039905845

ABSTRACT:
A safety device for a crane including means for continuously comparing an actual load carried by a lifting hook with an indicated maximum safe working load for that particular working radius.

REFERENCES:
patent: 2030529 (1936-02-01), Nash
patent: 2346066 (1944-04-01), Conrad
patent: 3200963 (1965-08-01), Vermes
patent: 3638211 (1972-01-01), Sanchez
patent: 3767061 (1973-10-01), Tay et al.
patent: 3828339 (1974-08-01), Schedrovitsky et al.
patent: 3834550 (1974-09-01), Eiler
patent: 3841493 (1974-10-01), Jackson et al.

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