Patent ID: 9743584
Date: 2017-08-29
CPC Classifications: A01D

Claim:
1. A rotary mower blade system attachable to a spindle of a lawnmower, the system comprising: an attachment arm extending along a longitudinal axis; an attachment aperture providing access through the attachment arm along a vertical axis, the spindle passing vertically through the attachment aperture of the attachment arm to secure the attachment arm to the lawnmower; a first retention body attachable to the attachment arm; a retention aperture of the retention body extending on the longitudinal axis, wherein at least a portion of the attachment arm passes through the retention aperture of the retention body; a vertical height of the retention aperture that decreases along the longitudinal axis to limit movement of the retention body along the longitudinal axis of the attachment arm; and a blade that inserts into the retention aperture of the retention body to secure the blade to the attachment arm, wherein both the blade and the attachment arm are secured within the retention aperture.