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Title:
BIMATERIAL FLIGHT ASSEMBLY FOR AN ELEVATOR SYSTEM FOR A WHEEL TRACTOR SCRAPER
Document Type and Number:
WIPO Patent Application WO/2013/028459
Kind Code:
A3
Abstract:
An improved flight assembly (42) for an elevator (12) used with a wheel tractor scraper (10) is provided. The flight assembly (42) comprises a support member (44) made of one type of material and an edge plate (46) made of a second type of material that is harder and less flexible than the support member material. The edge plate is mounted to the support member (44) and includes the cutting/digging edge (74) of the flight assembly (42). In one embodiment the support member (44) is made of a rolled steel material having a hardness of about 205 BHN and the edge plate (46) is made of a hardened, heat treated steel material having a hardness of between about 360 BHN and about 440 BHN.

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Inventors:
SHAH, Ashish, A. (625 Crestline Dr, Decatur, IL, 62526, US)
Application Number:
US2012/051145
Publication Date:
May 02, 2013
Filing Date:
August 16, 2012
Export Citation:
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Assignee:
CATERPILLAR INC. (100 N.E. Adams Street, Peoria, IL, 61629-9510, US)
SHAH, Ashish, A. (625 Crestline Dr, Decatur, IL, 62526, US)
International Classes:
E02F3/08; E02F7/02
Domestic Patent References:
WO2008045993A22008-04-17
Foreign References:
US20040111926A12004-06-17
US3927759A1975-12-23
US6832443B12004-12-21
US5224555A1993-07-06
Attorney, Agent or Firm:
HANLEY, Steven, M. et al. (100 N.E. Adams Street, Peoria, IL, 61629-9510, US)
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