Road structure – process – or apparatus – Apparatus – Tool rotating in horizontal plane
Patent
1979-01-08
1980-11-11
Byers, Jr., Nile C.
Road structure, process, or apparatus
Apparatus
Tool rotating in horizontal plane
192129R, 51177, E01C 1922
Patent
active
042329809
ABSTRACT:
A rotary power trowel having a safety clutch, a gyroscopic stabilizing ring, blade pitch control, and an adjustable handle. The safety clutch employs a belt tension adjustment to act as a brake on the drive belt when activated either manually or, in an emergency, automatically by a lever on a handle near the operator. When the rotary trowel goes out of control in an emergency, centrifugal force activates the lever and disengages the driving force and acts to brake the belt in less than one turn of the handle. The gyroscopic stabilizer ring lowers the rotary trowel center of gravity and generates a stabilizing effect. Blade tilting is accomplished through a turning knob located at the end of the adjustable handle, which is adjustable to the height of the operator.
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Stone Alan J.
Tertinek Christian T.
Byers Jr. Nile C.
Jacobson Harvey B.
O#Brien Clarence A.
Stone Construction Equipment Inc.
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