Conveyors: power-driven – Conveyor section – Endless conveyor
Reexamination Certificate
2008-02-06
2009-12-22
Deuble, Mark A (Department: 3651)
Conveyors: power-driven
Conveyor section
Endless conveyor
Reexamination Certificate
active
07635060
ABSTRACT:
Apparatus and method for sensing conditions local to a modular conveyor belt and wirelessly transmitting signals representing those conditions to an off-belt belt monitoring system. In a preferred version, a load cell pin installed in a clevis formed at a hinge joint between adjacent rows of a modular conveyor belt serves as a clevis pin to interconnect the rows and as a sensor sensitive to belt tension transmitted through the clevis. A special load-sensing belt module forms the clevis and holds electronic circuitry that takes the measurements made by the sensor, logs them in a memory element, and transmits them wirelessly to the belt monitoring system. The measurements may also be used as part of a closed-loop control system to control the speed or other operating characteristics of the conveyor system. Furthermore, a variety of sensors housed in sensor modules similar to standard conveyor belt modules may be installed in the belt as drop-in replacements for standard modules.
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PCT Search Report, PCT/US09/30906, prepared by ISA/EP, Mar. 26, 2009, European Patent Office, Rijswijk, Netherlands.
Cronvich James T.
Deuble Mark A
Laitram L.L.C.
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