Mowing blades having an impact energy absorbing structure
First Claim
Patent Images
1. A cutting blade comprising:
- a one-piece member having;
(a) a drive mechanism coupling section having a width, a beginning point and an ending point, the drive mechanism coupling section extending from said beginning point radially outwardly to said ending point;
(b) a deformation section; and
(c) a cutting section having a width, a beginning point and an ending point, the cutting section extending from said beginning point radially outwardly to said ending point, the deformation section being positioned between the ending point of the drive mechanism coupling section and the beginning point of the cutting section, a portion of the deformation section having a width that is;
(i) less than the width of the drive mechanism coupling section; and
(ii) less than the width of the cutting section, the deformation section positioning the drive coupling section and the cutting section in different planes.
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Accused Products
Abstract
Mowing blades which include a one-piece member having a drive mechanism coupling section, a deformation section and a cutting section. When the mowing blades receive a particular load from an obstructing object, the deformation section deforms, dissipates energy and reduces damage to drive mechanisms of mowing machines.
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Citations
22 Claims
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1. A cutting blade comprising:
a one-piece member having;
(a) a drive mechanism coupling section having a width, a beginning point and an ending point, the drive mechanism coupling section extending from said beginning point radially outwardly to said ending point;
(b) a deformation section; and
(c) a cutting section having a width, a beginning point and an ending point, the cutting section extending from said beginning point radially outwardly to said ending point, the deformation section being positioned between the ending point of the drive mechanism coupling section and the beginning point of the cutting section, a portion of the deformation section having a width that is;
(i) less than the width of the drive mechanism coupling section; and
(ii) less than the width of the cutting section, the deformation section positioning the drive coupling section and the cutting section in different planes.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A cutting blade connectable to a drive mechanism of a machine, the cutting blade having at least one end, the cutting blade comprising:
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a drive mechanism coupling section having a width, a beginning point and an ending point, the drive mechanism coupling section extending from said beginning point, toward the end of the cutting blade, to said ending point;
a cutting section having a width, a beginning point and an ending point, the cutting section extending from said beginning point, toward the end of the cutting blade, to said ending point; and
at least one intermediate section positioned between the ending point of the drive mechanism coupling section and the beginning point of the cutting section, the intermediate section having a maximum width which is;
(a) less than the width of the drive mechanism coupling section; and
(b) less than the width of the cutting section, the intermediate section positioning the drive mechanism coupling section and the cutting section in different planes, the intermediate section operable to facilitate deformation of the cutting blade in response to a force received by the cutting section, thereby reducing damage to the drive mechanism of the machine. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A cutting blade connectable to a drive mechanism of a machine, the cutting blade having at least one end, the cutting blade comprising:
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a drive mechanism coupling section having a beginning point and an ending point, the drive mechanism coupling section extending from said beginning point, toward the end of the cutting blade, to said ending point;
a cutting section having a beginning point and an ending point, the cutting section extending from said beginning point, toward the end of the cutting blade, to said ending point; and
at least one intermediate section extending from the ending point of the drive mechanism coupling section to the beginning point of the cutting section, the intermediate section having an upper surface, a lower surface and a plurality of side walls, each of the side walls defining a notch, each of the notches having a length extending from one end to another end, the intermediate section operable to position;
(a) the drive mechanism coupling section in a first plane; and
(b) the cutting section in a second plane located below the first plane, wherein, for each of the notches, one end of the notch is substantially positioned in the first plane and the other end of the notch is substantially positioned in the second plane, the intermediate section facilitating deformation of the cutting blade in response to a force received by the cutting section, thereby reducing damage to the drive mechanism of the machine. - View Dependent Claims (22)
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Specification