Stone working – Sawing
Patent
1995-09-15
1998-04-28
Rose, Robert A.
Stone working
Sawing
299 393, 192 8R, 192 4A, 404 94, 188171, 188 31, B28D 104
Patent
active
057432473
ABSTRACT:
A concrete saw is provided which utilizes a transmission having both forward and reverse, high and low speed ranges separated by a neutral state. The transmission includes a neutral start switch which prevents the engine from being started, while the transmission is in gear. An automatic parking brake assembly is mounted to the frame proximate the drive wheel. The brake assembly fixedly engages the drive wheel when the ignition switch is turned to the off position, when the battery is disengaged or when the battery is dead. The brake assembly also immobilizes the drive wheel whenever the transmission is shifted to the neutral state regardless of the position of the ignition switch. The system is provided with an override switch to bypass the automatic application of the brake assembly when the transmission is placed in neutral to facilitate winching or otherwise rolling the saw without engine power. Normally, the brake assembly disengages when the transmission is shifted from neutral into gear. Even when the brake override switch is activated, the brake is automatically engaged when the engine ignition switch is turned off or the emergency override switch is activated. The brake is disengaged only when the engine start switch is turned on. An override switch is provided which, when applied, stops the engine, blade and engages the parking brake. An electrically controlled hydraulic system for raising and lowering the saw blade is rendered inoperative when the engine start switch is turned to the off position or when the battery fails.
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"Floor Cutters" by Lissmac, published during 1985.
"Operating Instructions-- Parts List for Super Quadramatic Concrete/Asphalt Saws", published by Target Products, Inc., Kansas City, Missouri, May of 1990.
"Concut --Concrete Sawing, Safety Grooving & Bumpcutting Equipment" brochure distributed by Concut, Inc. of Kent, Washington, distributed in 1984.
"Target Safetrac Systems Rebuilding America's Infrastructure" brochure published by Target Products, Inc., Kansas City, Missouri, Aug. of 1985.
Kingsley Michael G.
Wilson Kevin R.
Bowman Joseph B.
Diamant Boart, Inc.
Rose Robert A.
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