Surface-hardened chain link

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United States of America Patent

PATENT NO 5997662
SERIAL NO

08993979

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Abstract

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A surface-hardened chain comprises a plurality of connected chain links, each of which links is made from a killed steel having a specified chemical composition and comprises a surface-hardened layer of a high carbon tempered martensite structure and a core layer of a low carbon tempered martensite structure.

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Patent Owner(s)

Patent OwnerAddress
ELEPHANT CHAIN BLOCK CO LTDOSAKA JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Norio, Kanetake Tokyo, JP 1 23

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