Caterpillar Global Mining America LLC

Dbt America, Inc.

Roger Lee O'Quinn

Darren Brent Antoine

Jeffrey D Looney

Michael Twigger

Estel Owens

Steven Murray Shaffer

David Wallace

Todd William Wampler

Chitra Ranganathan

A continuous mining machine may include a stationary boom member, a stationary gear and bearing housing attached to the boom member, and a cutter drum assembly rotatably mounted on the stationary gear and bearing housing. Cutting elements and spray nozzles may be mounted on the rotatable cutter drum assembly. The spray nozzles may be configured to direct liquid spray at a mine face as mine material is dislodged by rotation of the cutter drum assembly and contact of the cutting elements with the mine face. Stationary liquid passageways may be provided through the gear and bearing housing, and rotatable liquid passageways may be provided through the rotatable cutter drum assembly and configured to convey liquid to the spray nozzles. A liquid distribution cavity may be defined within the cutter drum assembly between two labyrinth-type, non-contacting seal assemblies, the liquid distribution cavity configured to convey liquid from the stationary liquid passageways to the rotatable liquid passageways and to the spray nozzles.

Wethead seal design for continuous mining machine

A device for controllably supporting a battery includes an arm, a first protrusion, a second protrusion, and a cylinder actuator. The arm has a compartment formed in the arm and an opening extending through the arm at a base of the compartment. The cylinder actuator includes a piston connected to a rod, and is positioned substantially in the compartment of the arm. The rod extends toward the opening of the arm, and the rod moves through the opening during operation of the cylinder actuator. Also, the first protrusion extends from the arm in a first direction and the second protrusion extends from the arm in a second direction.

Battery-powered mining vehicle

Embodiments of the present invention are directed to a method and apparatus for safety protection control of temporary roof support. In one embodiment, a temporary roof support has a load sensing member. In another embodiment, a beam structure of temporary roof support is supported by a load sensing pin. Strain gages are installed within the pin to measure the load placed upon the pin. An unusually high load being sensed by the pin indicates that the roof has fractured and the temporary roof support is supporting loose rock. In one embodiment, when an unusually high load is measured at the pin, the temporary roof support controls at the front of the machine are disabled. A second set of remotely located temporary roof support controls remain operative. In one embodiment, the second set of controls is located at the rear of the machine.

Method and apparatus for safety protection of temporary roof support

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Blacksburg, VA, United States of America

Roger Lee O'Quinn