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Title:
GEAR RIM AND GEARS PRODUCED THEREFROM
Document Type and Number:
WIPO Patent Application WO2003022484
Kind Code:
A3
Abstract:
Disclosed herein is a multi-segmented fabricated gear rim and gear formed therefrom. Each gear rim segment (11, 12) in the gear is formed from a single unsegmented steel plate. The steel plate has an upper surface (16) from which gear teeth are cut and a lower surface (15) on which the gear sub-structure is welded. Relative to each other, the upper surface (16) of the steel plate possesses high hardenability and poor weldability and the lower surface (15) possesses low hardenability and good weldability. The steel plate is preferably formed using a decarburization process.

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Inventors:
LOVELL STEPHEN L
BOTTO IVO
HURTADO EDUARDO
Application Number:
PCT/US2002/028541
Publication Date:
November 20, 2003
Filing Date:
September 06, 2002
Export Citation:
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Assignee:
FFE MINERALS USA INC (US)
International Classes:
C23C8/22; (IPC1-7): F16H55/06; F16H55/12
Foreign References:
US4070920A1978-01-31
US6023990A2000-02-15
US1908187A1933-05-09
US2221415A1940-11-12
US2756607A1956-07-31
US5390414A1995-02-21
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