Traversing hoists – Having horizontally swinging boom or bridge – Having fluid ram directly actuating load cable or sheave...
Patent
1982-03-02
1983-12-20
Barefoot, Galen L.
Traversing hoists
Having horizontally swinging boom or bridge
Having fluid ram directly actuating load cable or sheave...
212244, 212254, 212195, 105163R, 105177, 104245, 414 10, 52749, E04D 1500, B61D 100, B66C 2302
Patent
active
044212429
ABSTRACT:
A panel locator for moving bundles of panels from one place to another on a roof includes a base section movably mounted on roof purlins, and a tower section extending upwardly from the base section, and a boom section pivotably mounted on the tower section. The locator has the capability for maintaining a level orientation on a sloped roof and can change direction of movement from along the roof length to up and down the slope.
REFERENCES:
patent: 1653432 (1927-12-01), Hansen
patent: 2686606 (1954-08-01), Smith
patent: 2759604 (1956-08-01), Carpenter
patent: 2989197 (1961-06-01), Werner et al.
patent: 3408950 (1968-04-01), Puhringer
patent: 3450062 (1969-06-01), Pradon
patent: 3734302 (1973-05-01), Dorand
patent: 4003479 (1977-01-01), Reyer
patent: 4050587 (1977-09-01), Moen
patent: 4078355 (1978-03-01), Clemensen
patent: 4222212 (1980-09-01), Alderman
Barefoot Galen L.
Butler Manufacturing Company
Johnson R. B.
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