Patent ID: 7775026
Filing Date: 2010-08-17
Classification: A01D

Abstract:
1. A lawn mower blade assembly for a rotatable driveshaft comprising: a blade mount to be secured to the rotatable driveshaft and having an elongate rectangular shape with a medial opening therein to receive a fastener for securing the blade mount to the rotatable driveshaft; a cutting blade removably coupled to said blade mount and defining therewith a blade base unit having first and second wedge surfaces thereon; said cutting blade comprising an elongate rectangular member having first and second opposing ends and first and second opposing sides, a length of the first and second sides being greater than a length of the first and second ends; said elongate rectangular member having a medial opening therein aligned with the medial opening of the blade mount, and first and second release notches on respective portions of said elongate rectangular member opposite the medial opening; said elongate rectangular member also having a first cutting edge on the first side and adjacent the first end, and a second cutting edge on the second side and adjacent the second end; and a pair of sliding retainers on respective portions of said blade mount opposite the medial opening and removably coupling said cutting blade to said blade mount and being slidably movable, with respect to the cutting blade and the blade mount, between a locked position and a released position, said pair of sliding retainers, when in the released position, being aligned with the pair of release notches to permit removal of said cutting blade from said blade mount; each sliding retainer having at least one wedge surface thereon cooperating with a respective one of the first and second wedge surfaces of said blade base unit to securely couple said cutting blade to said blade mount when in the locked position.