CONCRETE TROWEL

Abstract: a concrete trowel including: a frame including a blade guard extending therefrom; 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 within the blade guard and including a plurality of blades and an attachment portion for selectively engaging the drive hub; and a quick-change coupling for selectively attaching the rotor and the drive hub for co-rotation therewith, wherein the quick-change coupling includes: a pull-through clamp configured to fit through the attachment portion of the rotor and imparts a clamping force on the attachment portion along the rotational axis of the rotor to clamp the rotor to the drive hub along the rotational axis, wherein the pull-through clamp includes a spring that remains on the drive hub when the attachment portion of the rotor is removed from the quick-change coupling.

Inventor(s): Ian C. Richards

CPC Classification: E04F21/248 (of masses made in situ, e.g. smoothing tools {( takes precedence; finishing of concrete roads or pavings ; devices for levelling concrete floors ; devices for solidifying concrete floors by vibrating )})

Search for rejections for patent application number 20250188753