Endless belt power transmission systems or components – Positive drive belt – Belt formed of rigid links
Reexamination Certificate
2004-12-03
2009-08-04
Ridley, Richard W L (Department: 3656)
Endless belt power transmission systems or components
Positive drive belt
Belt formed of rigid links
C474S206000
Reexamination Certificate
active
07568988
ABSTRACT:
A preferred embodiment of the invention described herein includes a method and apparatus for providing a seal between at least the outer sidebar and pin bushing of a chain link assembly. The apparatus includes a seal having an outer collar and an inner resilient ring, the outer collar preferably having a mating ridge and the resilient ring being molded onto the collar. This seal also includes outer ribs for providing a sealed contact against the outer sidebar, and may include inner ribs. The seal is part of a chain link assembly positioned between the outer and inner sidebars and surrounding a pin bushing end. A fluid (e.g., grease) may be advantageously placed between the ribs, lubricating the rib—sidebar interface and thereby reducing wear of the ribs.
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Boes Terence
Holland & Knight LLP
Jeffrey Chain Corporation
Ridley Richard W L
LandOfFree
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