Conveyors: power-driven – Conveyor section – Endless conveyor
Reexamination Certificate
2008-03-25
2008-03-25
Bidwell, James R. (Department: 3651)
Conveyors: power-driven
Conveyor section
Endless conveyor
C198S690100
Reexamination Certificate
active
10563588
ABSTRACT:
Methods and devices for measuring elongation, wear, and internal temperature of a conveyor belt to catch signs of conveyor belt failure such as breakage by detecting a magnetic field from a magnetic body by using a magnesium sensor, as well as a rubber magnet sheet as a magnetic body and a method of producing the sheet, the rubber magnet sheet being able to be used while it is embedded in the conveyor belt. To measure elongation of a running conveyor belt (11), a magnetic field of a magnetic body (2) embedded in the belt (11) is detected by a magnetism sensor (3) fixed to the earth, and elongation of the belt (11) is calculated from temporal variation of the detected magnetic field.
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Aizawa Satoshi
Higashi Kenichi
Kikuchi Masami
Shizuku Takahisa
Bidwell James R.
Bridgestone Corporation
Oliff & Berridg,e PLC
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