Conveyors: power-driven – With alarm or indicator
Reexamination Certificate
2007-03-13
2008-11-11
Hess, Douglas A (Department: 3651)
Conveyors: power-driven
With alarm or indicator
C198S810010, C492S009000
Reexamination Certificate
active
07448488
ABSTRACT:
An abrasion sensing type conveyor chain, in which a degree of abrasion in a roller rolling surface is easily judged by a visual or a tactile sensing during checking and maintaining of rollers of the conveyor chain so that a maintenance operation can be significantly reduced. An abrasion sensing type conveyor chain in which rollers which travel along a guide surface while rolling on a conveyor line, each comprise a roller rolling surface with a roller outer diameter of a required standard and an abrasion limiting surface with a smaller diameter than the roller outer diameter, the abrasion limiting surface being disposed adjacently and coaxially to the roller rolling surface.
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Dann Dorfman Herrell and Skillman, P.C.
Hess Douglas A
Skillman Henry H.
Tsubakimoto Chain Co.
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