Rack bar haulage system with an improved rackbar

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8393687
APP PUB NO 20110239896A1
SERIAL NO

12752833

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A rack bar haulage system including a plurality of rack bars, each having spaced apart gear teeth extending between cheek sections at opposite sides of the rack bar. The haulage system also includes a clog including two spaced apart sidewalls, and openings through the sidewalls. One cheek section has a clog wall receiving cavity adapted to receive one of the clog sidewalls, the clog wall receiving cavity being defined by spaced apart cheek section flanges. The cheek section flanges each have an opening there through, and the cheek section flange openings are aligned with the clog sidewall openings. A pin is insertable through the sidewall openings and the openings in the cheek section flanges, and the spaced apart cheek sections are positioned so that the envelope formed by the gear teeth is at the same level on the rack bar as the pin for retaining the rack bar in the clog.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
JOY GLOBAL UNDERGROUND MINING LLC40 PENNWOOD PLACE SUITE 100 WARRENDALE PA 15086

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Powell, Gordon Malvern, GB 13 174

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