Excavating – Scoop or excavating and transporting container – Supported on vehicle between longitudinally spaced ground...
Reexamination Certificate
2007-10-23
2007-10-23
Novosad, Christopher J. (Department: 3641)
Excavating
Scoop or excavating and transporting container
Supported on vehicle between longitudinally spaced ground...
C037S195000
Reexamination Certificate
active
10666237
ABSTRACT:
Hydraulic systems for controlling movement of an apron and a bucket of earth moving apparatuses are disclosed. The hydraulic system includes a hydraulic fluid supply, a hydraulic cylinder for moving the apron, a hydraulic cylinder for moving the bucket and a valve for controlling flow of hydraulic fluid to the hydraulic cylinders. The hydraulic system includes another valve for controlling the flow of hydraulic fluid to the hydraulic cylinders. An earth moving apparatus having a bucket and an apron configured with the hydraulic system is also disclosed. Methods for controlling movement of the bucket and the apron are also disclosed. An earth moving apparatus having an ejector wall for removing soil from the bucket is described. A linkage structure for reducing the force required to move the ejector wall is incorporated in the earth moving apparatus. A substantially, vertical oriented hydraulic cylinder for moving the ejector wall is also described.
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Miskin Construction Scraper Advertising Brochure, 2002.
Morriss O'Bryant Compagni
Novosad Christopher J.
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