Crane having a readily removable outer boom section
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 9, 1997
Grant Date -
N/A
app pub date -
Apr 8, 1996
filing date -
Apr 8, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A crane apparatus includes an upstanding mainframe and a boom unit supported for pivoting movement on the mainframe about a horizontal axis. The boom unit includes a base boom, an outer boom section of one or more outer booms, and a fluid-actuated piston-and-cylinder assembly. A pair of space mounting walls are presented by the base boom in which a hole is defined, and the piston-and-cylinder assembly includes a proximal transverse sleeve sized for receipt between the spaced walls of the base boom in alignment with the hole. A pin is provided that is sized for receipt in the hole and the tubular sleeve for securing the piston-and-cylinder assembly to the base boom. Removal of the pin enables the outer boom section and piston-and-cylinder assembly to be removed from the base boom.
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Cited Art Landscape
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