Land vehicles – Wheeled – Attachment
Patent
1975-03-17
1976-03-23
Spar, Robert J.
Land vehicles
Wheeled
Attachment
212145, 308 3R, B60S 900
Patent
active
039456668
ABSTRACT:
Hydraulically powered outrigger beams for cranes including a positive safety locking system for securing the outrigger beams in a fixed downward position to provide stabilization of the vehicle and crane during operation of the crane.
REFERENCES:
patent: 433112 (1890-07-01), Williams
patent: 2310284 (1943-02-01), Gurries
patent: 2393299 (1946-01-01), Denning
patent: 3144786 (1964-08-01), Dale
patent: 3279622 (1966-10-01), Person
Harnischfeger Corporation
Nilles James E.
Oresky Lawrence J.
Spar Robert J.
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