Can opener blade
OwnerNeale Belcourtinventor
Life of this patent
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Abstract
This invention provides a can opener blade wherein the two primary sides forming the bevelled cutting edge have a certain angular relationship with the centerline of said blade; the blade of this invention has certain advantages over known can opener blades.
Claims2
A circular can opener blade comprising a bevelled edge formed by a slanted straight side and a slanted index side, said index side being extended by an outwardly curved portion which leads into a recessed portion, said straight side being terminated by a flat support region;
- all penetrated by an annular hole;
- wherein the index angle formed by the centerline of said blade and by said index side is 43-47 degrees, the side angle formed by said centerline and said slanted straight side is 22-30 degrees, said outwardly curved portion has a radius of 0.4-0.65 inch, and said annular hole has a diameter of 0.26-0.31 inch allowing a degree of freedom expressed by the angle formed by the centerline of a can opener shaft and by the centerline of said blade of 90 degrees plus/minus 10-20 degrees.
A can opener having attached to a shaft thereof a circular can opener blade comprising a bevelled edge formed by a slanted straight side and a slanted index side, said index side being extended by an outwardly curved portion which leads into a recessed portion, said straight side being terminated by a flat support region;
- all penetrated by an annular hole;
- wherein the index angle formed by the centerline of said blade and by said index side is 43-47 degrees;
- the side angle formed by said centerline and by said straight side is 22-30 degrees;
- wherein the degree of freedom expressed by the angle formed by the centerline of said shaft and by the centerline of said blade is 90 degrees plus/minus 8-25 degrees.
Dependencies are inferred from the claim text.