Cross flow horizontal rotary lawn mower with airfoil blades
First Claim
Patent Images
1. A horizontal rotary lawn mower, comprising:
- (a) a horizontal rotary blade assembly having a length, a diameter, and a plurality of blades, each of said plurality of blades forming an airfoil and each of said plurality of blades comprising a cutting edge and each of the plurality of blades spanning substantially the entire length of the rotary blade assembly, the horizontal rotary blade assembly comprising a plurality of blade holding elements configured to releasably hold each of the plurality of blades in an orientation such, when the horizontal rotary blade assembly is rotated at an operational speed about an axis parallel to a surface being mowed, the airfoil aspect of the plurality of blades generates an airflow sufficient to direct grass clippings;
(b) a mower housing having a front, a back, a top surface and a bottom surface, said housing substantially surrounding at least a portion of the horizontal rotary blade assembly, said bottom surface defining an opening;
(c) a baffle for dividing said opening into an intake and an exhaust, said intake having a width, said intake width being between 50 and 75 percent of said horizontal rotary blade assembly diameter; and
wherein each of the plurality of blade holding elements comprises a retention slot configured to receive a blade cartridge comprising a spring biased locking mechanism.
1 Assignment
0 Petitions
Accused Products
Abstract
A lawnmower uses thin, replaceable blades with a hardened cutting edge and a cross-section defining an airfoil. Such blades are held by blade holding elements in a horizontally rotating mower blade assembly. The blade assembly and blade assembly housing are configured in a specialized cross-flow mower assembly to reduce grass leave tip damage, increase cut quality and overall aesthetic appeal, and create a cross-flow air current while consuming less power and providing a reduced environmental impact.
-
Citations
12 Claims
-
1. A horizontal rotary lawn mower, comprising:
-
(a) a horizontal rotary blade assembly having a length, a diameter, and a plurality of blades, each of said plurality of blades forming an airfoil and each of said plurality of blades comprising a cutting edge and each of the plurality of blades spanning substantially the entire length of the rotary blade assembly, the horizontal rotary blade assembly comprising a plurality of blade holding elements configured to releasably hold each of the plurality of blades in an orientation such, when the horizontal rotary blade assembly is rotated at an operational speed about an axis parallel to a surface being mowed, the airfoil aspect of the plurality of blades generates an airflow sufficient to direct grass clippings; (b) a mower housing having a front, a back, a top surface and a bottom surface, said housing substantially surrounding at least a portion of the horizontal rotary blade assembly, said bottom surface defining an opening; (c) a baffle for dividing said opening into an intake and an exhaust, said intake having a width, said intake width being between 50 and 75 percent of said horizontal rotary blade assembly diameter; and wherein each of the plurality of blade holding elements comprises a retention slot configured to receive a blade cartridge comprising a spring biased locking mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification