Cutting blade
OwnerVictor Jay Liechty, IIinventor
Life of this patent
Estimating the term…
Abstract
Arrowhead cutting blades having a sharper cutting edge, wherein the angle between opposing grind bevels on either side of a corresponding cutting edge is narrower than that which an arrowhead cutting blade of the same thickness would of normally had. Such an arrowhead blade cutting edge is ground on a necked down thinner edge portion of the precursor blade article (blade form or blade shape) during a strip grinding process (but not limited thereto), wherein the blade has a pair of opposing side faces, an inside corner and a step disposed between each side face and the cutting edge, so as to define the narrower cutting edge angle thereof.
Claims39
An arrowhead cutting blade comprising:
- (a) a side face;
- (b) a cutting edge;
- and
- (c) an inside corner disposed between the side face and the cutting edge
- wherein a plurality of different inclined sections transition between the side face and the cutting edge, the inside corner being disposed between two of the different inclined sections.
An arrowhead cutting blade comprising:
- (a) a cutting edge;
- and
- (b) a first side face and a second side face, the first side face being configured on a first side of the cutting edge, and the second side face being configured on a second side of the cutting edge, wherein a plurality of different inclined sections transition between each side face and the cutting edge, and an inside corner is disposed between two of the different inclined sections on both sides of the cutting edge.
An arrowhead cutting blade as recited in 6, wherein the cutting edge is substantially equidistantly spaced apart from each of the side faces.
An arrowhead cutting blade comprising:
- (a) a side face;
- (b) a cutting edge;
- and
- (c) an inside corner disposed between the side face and the cutting edge
- wherein the cutting edge defines a plurality of linear segments that are not collinear with each other.
An arrowhead cutting blade comprising:
- (a) a pair of opposing side faces;
- (b) a cutting edge;
- (c) a plurality of opposing primary grind bevels and a plurality of opposing steps, wherein at least one primary grind bevel and at least one step transitions between each side face and the cutting edge, the steps adjoining corresponding side faces;
- and
- (d) a plurality of inside corners, the cutting blade being configured such that an inside corner is disposed between each primary grind bevel and each step.
An arrowhead cutting blade comprising:
- (a) a cutting edge;
- (b) a first side face disposed on a first side of the cutting edge and a second side face disposed on a second side of the cutting edge, the first side face being configured on a first side of the cutting blade, and the second side face being configured on a second side of the cutting blade;
- (c) a first angle defined between:
- (i) a first inclined section which adjoins the first side face;
- and
- (ii) the exterior surface of the second side of the cutting blade directly opposite the first inclined section;
- and
- (d) a second angle defined between:
- (i) a second inclined section on the first side of the cutting blade disposed just closer toward the cutting edge from the first inclined section;
- and
- (ii) the exterior surface of the second side of the cutting blade directly opposite the second inclined section, wherein the first angle is larger than the second angle.
An arrowhead cutting blade as recited in calm 25, wherein a primary grind bevel and a hone bevel are disposed on both sides of the cutting edge.
An arrowhead cutting blade comprising:
- (a) a side face;
- (b) a cutting edge;
- and
- (c) a plurality of at least three different sloped sections transitioning between the side face and the cutting edge.
Dependencies are inferred from the claim text.