Excavating – Scoop or excavating and transporting container – Dipper-type
Patent
1991-07-10
1993-09-21
Reese, Randolph A.
Excavating
Scoop or excavating and transporting container
Dipper-type
264 466, 264 465, 523099, 414694, E02F 502
Patent
active
052457702
ABSTRACT:
A high strength polymeric composite material dipper stick which comprises a structure including an outer casing member formed of high strength polymeric composite materials, an inner filler comprising polyurethane foam disposed inside the outer casing member in order to be integrated with the outer casing member, and a plurality of bushing holders made of polymeric composite material and disposed at connecting portions of the structure in order to be integrated with said structure. The present invention provides weight reduction of about 50%-60% in comparison with a conventional structural steel dipper stick, and also about 6.8%-13.9% in comparison with the conventional structural steel dipper stick on the basis of weight ratio of excavated earth.
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Jean En J.
Kim Chun K.
Kim Jin
Ko Jae I.
Lee Jae W.
Reese Randolph A.
Samsung Heavy Industries Co. Ltd.
Warnick Spencer
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