Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hiroshi Yamamoto0
Date of Patent
May 8, 2007
0Patent Application Number
105471880
Date Filed
February 27, 2004
0Patent Primary Examiner
Patent abstract
A ROPS canopy of a hydraulic shovel (hydraulic excavator) is commonly usable among various models regarding different automobile ranks. To configure this, a ROPS canopy (50A) in which two columns (31, 32) support a roof structure (40) is predefined as a basic type ROPS canopy, and the basic type ROPS canopy (50A) is so configured that at least an additional column (51, 52, 53, 54, 55, 56) can be attached such that the basic type ROPS canopy (50A) can be adapted to a ROPS canopy of higher class model. The additional columns (51, 52, 53, 54, 55, 56) are installable (57, 58b) by merely an add-on method.
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