Ceramic blades and production methodology therefor
OwnerJoseph A. Warner, Leo A. Kennedyinventors
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Abstract
A ceramic cutting blade includes a cutter portion having first and second side edges which converge at a distal acute angle to form a distal cutting tip and a cutting edge formed by first and second cutting faces oriented at a bevel angle. At least one of the cutting faces includes striations having a grain direction substantially perpendicular to the cutting edge, and these striations have a width of between 20 and 40 microns. The distal acute angle is preferably less than forty degrees, and the cutting tip is truncated along a straight line at an angle of truncation of at least forty degrees with respect to the cutting edge. The blade may be received by a handle or may be integrally molded with a handle portion.
Claims14
A blade adapted to be held by a handle for use in performing cutting operations comprising a blade body having a mounting portion adapted to be received and retained by said handle and a cutter portion extends from said mounting portion, said cutter portion having first and second side edges at least one of said first and second side edges defining a cutting edge said first and second side edges converge at a distal acute angle with respect to one another of less than 40.degree. to from a distal cutting tip that is truncated along a straight line at an angle of truncation with respect to said cutting edge, said cutting edge of at least 40.degree. being formed by first and second cutting faces oriented at an acute bevel angle "b" with respect to one another, said mounting portion and said cutter portion fabricated out of an integral piece of ceramic material wherein said bevel angle "b" is within a range of 16.degree. to 34.degree., inclusively.
A blade adapted to be held by a handle for use in performing cutting operations comprising a blade body having a mounting portion adapted to be received and retained by said handle and a cutter portion attached to said mounting portion, said cutter portion having first and second side edges which converge to form a distal cutting tip and having a pair of side surfaces extending between said first and second side edges on either side of said cutter portion with at least one of said first and second side edges defining a cutting edge, said cutting edge being formed by first and second cutting faces oriented at an acute bevel angle with respect to one another said mounting portion and said cutter portion fabricated out of an integral piece of ceramic material with at least one of said cutting faces having striations having a grain direction that is substantially perpendicular to said cutting edge.
Dependencies are inferred from the claim text.