Electric Polisher for Concrete Surfaces
AssigneeAllen Engineering Corporation
InventorsTimmy D. Guinn, Chris A. Bateman
Life of this patent
Estimating the term…
Abstract
A battery-powered electric polisher for treating concrete has the operational form of a self-propelled riding trowel. A rigid frame mounts a pair of rotors that descend into contact with the concrete surface. Hydraulic tilting circuits for polisher steering control are activated with joysticks. An electrically driven hydraulic pump powers the tilting circuits. Each rotor drives a lower, circular drive ring comprising a plurality of spokes. Drive ring spokes are nested within rigid channels defined in a lower a support plate so that the latter is removable. A plurality of radially spaced-apart abrasion devices descend from the support plate into contact with the concrete surface.
Claims10
An electric polisher for treating concrete:
- a frame adapted to be supported over a concrete surface to be treated by at least one rotor;
- a seat upon which a trowel operator may be comfortably seated;
- at least one rotor assembly secured to the frame and descending into contact with the lower concrete surface below;
- hydraulic tilting circuits for controlling each rotor assembly;
- a pair of joysticks for controlling the hydraulic tilting circuits;
- a hydraulic pump for driving said tilting circuits;
- an electric motor for powering said hydraulic pump;
- an electric motor for revolving each rotor assembly;
- at least one battery for powering said electric motors;
- each rotor controlling a circular drive ring;
- a support plate coupled to said drive ring;
- and,
- a plurality of radially spaced-apart abrasion rotors secured to said support plate.
A ride-on electric polisher for treating a concrete surface:
- a frame adapted to be propelled over the concrete surface to be treated;
- a seat upon which a trowel operator may be comfortably seated;
- a pair least of rotor assemblies secured to the frame and descending into contact with the concrete surface;
- hydraulic tilting circuits for controlling each rotor assembly to effectuate polisher steering;
- a pair of joysticks for controlling the hydraulic tilting circuits;
- a hydraulic pump for driving said tilting circuits;
- an electric motor for powering said hydraulic pump;
- an electric motor for revolving each rotor assembly;
- at least one battery for powering said electric motors;
- each rotor controlling a circular drive ring;
- a support plate coupled to each of said drive rings;
- and,
- a plurality of radially spaced-apart abrasion rotors secured to said support plate.
Dependencies are inferred from the claim text.