Patent ID: 11938646
Assignee: CRICUT, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 19:
20. A cutting tool comprising a longitudinal axis and a blade portion forming a distal end of the cutting tool, the blade portion comprising:
a first grind surface;
a second grind surface, wherein the first grind surface and the second together define
a knife edge;
a first chamfer surface that intersects the first grind surface;
a second chamfer surface that intersects the second grind surface;
a first spine section disposed on a back side of the blade portion between at least a portion of the first chamfer surface and at least a portion of the second chamfer surface; and
a second spine section disposed on the back side of the blade portion between the first spine section and a tip of the blade portion;
wherein the first spine section comprises a curved exterior surface.