Static structures (e.g. – buildings) – Machine or implement
Patent
1978-06-01
1980-07-29
Bertsch, Richard A.
Static structures (e.g., buildings)
Machine or implement
105215C, 52720, 212177, B66C 2306
Patent
active
042146658
ABSTRACT:
A crane boom section for a crane boom superstructure on a truck mounted railroad crane or the like is disclosed as including an enclosed exterior with spaced inner cross brace supports preventing twisting or bending of the crane boom section when subjected to heavy loads and stresses.
REFERENCES:
patent: 2053157 (1936-09-01), Ljungkull
patent: 3187906 (1965-06-01), Bushong et al.
patent: 3263628 (1966-08-01), Grove et al.
patent: 3269331 (1966-08-01), Thompson
patent: 3323660 (1967-06-01), Allin, Sr.
patent: 3581671 (1971-06-01), Hart
patent: 3759399 (1973-09-01), Glass et al.
Bertsch Richard A.
Kovac Michael
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