Jennmar Corporation

Stanley Ponce

John C Stankus

John G Oldsen

Frank Calandra, Jr

Eugene H Stewart

Brian R Castle

Robert Nestor

A mine roof bolt includes a flexible multi-strand cable having a first and second end with a drive head formed on the first head, the drive head having a plurality of driving faces on an exterior surface thereof. A load bearing barrel and wedge assembly is attached to the cable, with a separate drive head attached to the cable, wherein the separate drive head is utilized substantially for rotating the cable.

Cable bolt head

A plurality of designs for mine roof bolts is disclosed. Each mine roof bolt includes a flexible multi-strand cable having a first and second end with a drive head formed on the first end, the drive head having a plurality of driving faces on an exterior surface thereof. The drive head may be formed integrally with the multi-strand cable in one embodiment of the present invention. An alternative embodiment of the present invention forms a drive head as a separate member. With a separate drive head, a barrel and wedge assembly may be attached to the cable wherein the drive head is utilized substantially for rotating the cable.

A plurality of designs for mine roof bolts is disclosed. Each mine roof bolt includes a flexible multi-strand cable having a first and second end with a drivehead formed on the first end, the drivehead having a plurality of driving faces on an exterior surface thereof. The drivehead is a separate member. A barrel and wedge assembly is attached to the cable wherein the drivehead is utilized substantially for rotating the cable.

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Cresson, PA, United States of America

Stanley Ponce