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 Rotary power trowel

Details
Inventors: Tertinek, Christian T.; Stone, Alan J.;
Assignee: Stone Construction Equipment, Inc. (Honeoye, NY)
Primary Examiner: Byers, Jr.; Nile C.
Assistant Examiner:
Attorney, Agent or Firm: O'Brien; Clarence A., Jacobson; Harvey B.

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.

DETAILED DESCRIPTION It is accordingly an object of the present invention to provide a rotary power trowel having a safety clutch mechanism requiring no manual engagement and capable of automatically stopping a swinging trowel handle in less than one turn.
It is another object of the invention to provide a trowel handle adjustable to the height of the operator without direct connection with the engine.
Still another object of the invention is to provide an improved means for tilting troweling blades of the device.
Yet another object of the invention is to provide a gyroscopic stabilizer ring to lower the trowel center of gravity, increase the trowel weight, and generate a gyroscopic effect to increase trowel operational stability.
These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout.



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