Precision, Inc.

Darrell R Huffine

Allen V Reicks

Tim Erwin Wolf

Steven J Smith

Matt Roozeboom

A lagging for a belt conveyor pulley comprises a continuous and homogeneous rubber volume and a number of small plate-like ceramic lagging elements. The ceramic elements may be of rectangular, square, oval or circular shape in various patterns with and without grooving. The lagging is hot vulcanization bonded to the periphery of a pulley in a manner without seams or other paths for liquid or debris ingress to pulley rubber bond.

Ceramic pulley lagging

The shaft monitoring device for monitoring the rotation of a shaft about a longitudinal axis is comprised of an encoder, a stationary housing, and a shaft-engaging member rotatably attached to the stationary housing. The encoder has a target and a proximity sensor located within the housing. The housing is mounted to a stationary object such as a block-type bearing supporting one end of the rotating shaft to be monitored. A first end of the shaft-engaging member is placed against the shaft. The first end firmly engages the rotating shaft, thereby allowing the shaft-engaging member to rotate in unison with the rotating shaft. As the shaft rotates, the target attached to a second end of the shaft-engaging member also rotates in unison. As the target passes over the end of the proximity sensor, the sensor reads the presence of the target and closes a switch. Each time the switch is closed, a pulse is generated. This pulse or signal is carried by a signal cable to a signal receiving device which can read the signals to determine the speed, direction of rotation, position, or rotation count of a shaft.

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Knoxville, IA, United States of America

Darrell R Huffine