Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jeffrey Kevin Davis0
Erick M. Del Real0
Larry Jake Chapple0
Nathaniel Cody Bateman0
Date of Patent
December 7, 2021
0Patent Application Number
167525980
Date Filed
January 24, 2020
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A self propelled power trowel for finishing a concrete surface is equipped with reversible rotors to allow an operator to reverse the direction of rotation of rotor blades. The trowel includes a rigid frame adapted for operation over a concrete surface, a pair of rotor assemblies having rotor blades tiltably connected to the rigid frame for frictionally contacting the concrete surface and supporting the rigid frame thereabove, a prime mover mounted to the rigid frame and operatively coupled to drive the rotor blades of the rotor assemblies in opposite rotational directions. Synchronous or hydraulic motors are configured for causing, responsive to manual controls, reversal of the direction of rotation of the rotor blades.
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