The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2025
Filed:
Mar. 05, 2024
Milwaukee Electric Tool Corporation, Brookfield, WI (US);
Ian C. Richards, Milwaukee, WI (US);
MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US);
Abstract
A concrete trowel includes a frame, a drive assembly including a motor mounted on the frame and a drive hub configured to receive torque from the motor, a rotor rotatable about a rotational axis and including a plurality of blades, wherein the rotor includes an attachment portion that is received within a receiving portion of the drive hub, and a quick-change coupling for selectively attaching the rotor and the drive hub for co-rotation therewith. The quick-change coupling includes a spring that imparts a spring force on the attachment portion of the rotor and wherein the spring remains on the drive hub when the attachment portion of the rotor is removed from the quick-change coupling.