MOWER BLADE
First Claim
1. A mower blade rotatably driven and centered around a vertically-oriented axis in an interior of a housing, comprising:
- a blade main body having a length-direction;
a blade portion formed on the blade main body; and
an air circulator portion formed on the blade main body and generating airflow via rotation centered around the vertically-oriented axis of the mower blade;
the blade portion is arranged in a length-direction end portion of the blade main body and extends along a predetermined area in the length-direction;
the air circulator portion is located opposite the blade portion in a width direction, has a rising upward portion, and extends along a predetermined area in the length-direction;
a boundary portion arranged between the blade main body and a rising upward portion of the air circulator portion has a portion inclined or angled with respect to the blade portion such that, beginning at the length-direction end portion, a distance between the boundary portion and the blade portion increases along the length-direction and moving toward the vertically-oriented axis; and
a height of an upper end portion of the air circulator portion measured from a surface of the blade main body is a substantially constant height.
1 Assignment
0 Petitions
Accused Products
Abstract
Mower blade utilizes a blade portion formed on the blade main body and an air circulator portion formed on the blade main body and generating airflow via rotation centered around the vertically-oriented axis of the mower blade. The blade portion is arranged in a length-direction end portion of the blade main body and extends along a predetermined area in the length-direction. The air circulator portion is located opposite the blade portion in a width direction, has a rising upward portion, and extends along a predetermined area in the length-direction. A boundary portion is arranged between the blade main body and a rising upward portion of the air circulator portion has a portion inclined or angled with respect to the blade portion such that, beginning at the length-direction end portion, a distance between the boundary portion and the blade portion increases along the length-direction and moving toward the vertically-oriented axis. A height of an upper end portion of the air circulator portion measured from a surface of the blade main body is a substantially constant height.
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Citations
12 Claims
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1. A mower blade rotatably driven and centered around a vertically-oriented axis in an interior of a housing, comprising:
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a blade main body having a length-direction; a blade portion formed on the blade main body; and an air circulator portion formed on the blade main body and generating airflow via rotation centered around the vertically-oriented axis of the mower blade; the blade portion is arranged in a length-direction end portion of the blade main body and extends along a predetermined area in the length-direction; the air circulator portion is located opposite the blade portion in a width direction, has a rising upward portion, and extends along a predetermined area in the length-direction; a boundary portion arranged between the blade main body and a rising upward portion of the air circulator portion has a portion inclined or angled with respect to the blade portion such that, beginning at the length-direction end portion, a distance between the boundary portion and the blade portion increases along the length-direction and moving toward the vertically-oriented axis; and a height of an upper end portion of the air circulator portion measured from a surface of the blade main body is a substantially constant height. - View Dependent Claims (2, 3)
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4. A mower blade, comprising:
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a blade main body having a length-direction and opposite first and second cutting ends; each of the first and second ends comprising; an air circulator portion arranged opposite a cutting portion; the cutting portion being arranged in a length-direction end portion of the blade main body and extending along a predetermined area in the length-direction; and a boundary line defined by where the air circulator portion meets a surface of the blade main body extends along the length-direction and at an angle, wherein a distance between the boundary line at an outer end of the blade main body and a tip of the cutting portion is less than a distance between the boundary line and the cutting portion at a position spaced from the outer end, and wherein a height of an upper end portion of the air circulator portion, measured from the surface of the blade main body, is a substantially constant height over a predetermined length. - View Dependent Claims (5)
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6. A mower blade, comprising:
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a blade main body a centrally disposed mounting hole, a length-direction and oppositely arranged first and second cutting ends; each of the first and second ends comprising; an air circulator portion arranged opposite a cutting portion; and a boundary line defined by where the air circulator portion meets a surface of the blade main body extends along the length-direction and at an angle that is not parallel to an imaginary centerline of the blade main body passing through a center of the mounting hole and extending along the length-direction, wherein the distance between a first portion of the boundary line and the imaginary center line changes continuously by a first amount and the distance between a second portion of the boundary line and the imaginary center line changes continuously by a second different amount. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification