Traversing hoists – Having means facilitating assembly or disassembly – Of traversing hoist from support
Patent
1980-11-07
1983-07-26
Blix, Trygve M.
Traversing hoists
Having means facilitating assembly or disassembly
Of traversing hoist from support
2807651, 2807661, B66C 2378, B66C 2330
Patent
active
043949126
ABSTRACT:
A mobile crane having an extensible boom which is swingable about both a vertical and horizontal axis and having telescoping outriggers that extend transversely of the main frame of the crane and which outriggers are also pivotally mounted about a vertical axis for swinging between stowed position along the main frame and an extending crane operative position. Power operated extension means are provided for telescopingly adjusting the outriggers and includes a reversible hydraulic motor for rotating a threaded shaft. The telescoping outrigger includes a hollow box in which a hollow beam is telescopingly mounted.
REFERENCES:
patent: 3019913 (1962-02-01), Bowman
patent: 3076558 (1963-02-01), Berquist et al.
patent: 3278046 (1966-10-01), Shumaker
patent: 4045923 (1977-09-01), Shanmugasundaram
patent: 4084777 (1978-04-01), Lambert
patent: 4298128 (1981-11-01), Gattu
Epps Stephen R.
Gattu Narahari
Bartz C. T.
Blix Trygve M.
Harnischfeger Corporation
Nilles James E.
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