Method of indirect measurement of cowl position on a longwall shearer

United States of America Patent

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May 7, 1991
Grant Date
N/A
app pub date
Dec 22, 1989
filing date
Dec 22, 1989

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Expired

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Abstract

The position of the cowl on a longwall shearing machine is determined by loads, stresses or deflections measured on the ranging arm, clevis and pin connection on the ranging arm or lift cylinder and its linkage to the machine.

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Patent Owner(s)

Patent Owner	Address
CONSOLIDATION COAL COMPANY	A CORPORATION OF DE 1800 WASHINGTON RD PITTSBURGH PA 05241

International Classification(s)

E21C:MINING OR QUARRYING

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Bessinger, Stephen L	Morgantown, WV	5	90
Nelson, Michael G	Fairbanks, AK	11	228

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Method of indirect measurement of cowl position on a longwall shearer

Number of patents in Portfolio can not be more than 2000

United States of America Patent

07455102

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PATENT NO	5013091
SERIAL NO	07455102
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07455102

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