Mower blade assembly
First Claim
1. A mower blade assembly comprising:
- a blade bar having two oppositely disposed generally planar cutting ends lying in a generally horizontal plane and having a leading edge with respect to said blade bar direction of operational movement within said horizontal plane, each said cutting end having an elongated notch extending along said cutting end leading edge and extending in the longitudinal direction of said blade bar and within said horizontal plane;
a pair of bottom cutting blades removably mounted to said blade bar and having an elongated cutting edge, each bottom cutting blade being mounted to one said cutting end of said blade bar with said bottom cutting blade elongated cutting edge being positioned below one said cutting end notch and also being a leading edge with respect to the bottom cutting blade direction of operational movement; and
a pair of top cutting blades removably mounted to said blade bar and having an elongated cutting edge, each top cutting blade being mounted to one said cutting end of said blade bar and having said top cutting blade elongated cutting edge being positioned above one said cutting end notch and being aligned generally parallel with said bottom cutting blade elongated cutting edge.
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Accused Products
Abstract
A mower blade assembly (10) includes an elongated blade bar (11) having two oppositely disposed cutting ends (13). A pair of removable bottom blades (22) and a pair of removable top blades (23) are removably mounted to the blade bar. The bottom blade has two oppositely disposed serrated cutting edges (27) so that either of the two cutting edges may be utilized for cutting purposes. Each top blade has a forward portion (31) which includes a series of blade segments (32) with serrated cutting edges (33) and a series of mulching blades (34) with serrated cutting edges (35). The top blade also has an elongated rear portion (37) that is oriented at an angle with respect to the cutting blades and blade bar. The angle of the rear portion creates or defines an airfoil deflector which increases the vacuum effect of the rotating blades.
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Citations
20 Claims
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1. A mower blade assembly comprising:
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a blade bar having two oppositely disposed generally planar cutting ends lying in a generally horizontal plane and having a leading edge with respect to said blade bar direction of operational movement within said horizontal plane, each said cutting end having an elongated notch extending along said cutting end leading edge and extending in the longitudinal direction of said blade bar and within said horizontal plane; a pair of bottom cutting blades removably mounted to said blade bar and having an elongated cutting edge, each bottom cutting blade being mounted to one said cutting end of said blade bar with said bottom cutting blade elongated cutting edge being positioned below one said cutting end notch and also being a leading edge with respect to the bottom cutting blade direction of operational movement; and a pair of top cutting blades removably mounted to said blade bar and having an elongated cutting edge, each top cutting blade being mounted to one said cutting end of said blade bar and having said top cutting blade elongated cutting edge being positioned above one said cutting end notch and being aligned generally parallel with said bottom cutting blade elongated cutting edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A mower blade assembly comprising:
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a blade bar having two oppositely disposed generally planar cutting ends lying in a generally horizontal plane and having a leading edge, each said cutting end having an elongated notch extending along said cutting end leading edge and extending in the longitudinal direction of said blade bar and within said horizontal plane; a pair of bottom cutting blades extending from said blade bar and having an elongated cutting edge, each bottom cutting blade being removably mounted to one said cutting end of said blade bar and said bottom cutting blade elongated cutting edge being positioned below one said cutting end notch; and a pair of top cutting blades removably mounted to said blade bar and having an elongated cutting edge, each top cutting blade being mounted to one said cutting end of said blade bar and having said top cutting blade elongated cutting edge being positioned above one said cutting end notch. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification