Endless belt power transmission systems or components – Positive drive belt – Belt formed of rigid links
Reexamination Certificate
2009-03-17
2011-11-15
Kim, Sang (Department: 3654)
Endless belt power transmission systems or components
Positive drive belt
Belt formed of rigid links
C474S207000
Reexamination Certificate
active
08057340
ABSTRACT:
A chain has a resin member integrally molded on an inner circumferential surface of a bushing with a strong joining force between the resin member and an inner circumferential surface of the bushing. The chain has an inner link in which both end portions of a pair of front and rear bushings are press-fitted into bushing holes of a pair of right and left inner plates, and an outer link in which both end portions of a pair of front and rear pins are press-fitted into pin holes of a pair of right and left outer plates. The inner and outer links are alternately connected to each other in a longitudinal direction of the chain. The inner circumferential edge portions112aof both end portions of the bushing112are chamfered, and the bushing is lined with the resin member115insert-molded on an inner circumferential surface of the bushing112to produce flared ends, and a central portion of the lined bushing112between the ends thereof becomes thicker.
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Search Report dated Sep. 23, 2010 of European Patent Application 09003926.4.
Office Action dated Oct. 21, 2010 of Applicant's priority Application No. 2008-159241.
Enomoto Katsuya
Suko Tomoo
Dann Dorfman Herrell and Skillman
Kim Sang
Skillman Henry H.
Tsubakimoto Chain Co.
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