US 10,500,748 B2Granted

Chemically sharpened blades

AssigneeHutchinson Technology Incorporated

InventorsPaul V. Pesavento, Peter F. Ladwig, Michael W. Davis, John A. Theget, Kurt C. Swanson, Joel B. Michaletz, Philip W. Anderson, Timothy A. McDaniel

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Abstract

A chemically etched cutting tool includes a metal base having a first side and a second side, and a chemically etched blade on at least one side of the metal base, the chemically etched blade forming a cutting edge at the intersection of the first side of the chemically etched blade and the second side of the chemically etched blade. The first side of the chemically etched blade includes one or more concave portions and one or more convex portions with at least one inflection point between the concave portions and one or more convex portions. The second side of the chemically etched blade includes one or more concave portions and one or more convex portions with at least one inflection point between the concave portions and one or more convex portions.

Claims15

Dependent claims

A chemically etched cutting tool comprising:

a metal base having a centerline dividing a first side and a second side;
and
a chemically etched blade on the metal base, the chemically etched blade forming a cutting edge at an intersection of a first side of the chemically etched blade that corresponds to the first side of the metal base and a second side of the chemically etched blade that corresponds to the second side of the metal base,
wherein the first side of the chemically etched blade includes at least two repeating profiles, each profile includes a proximal convex portion and a distal concave portion, with an inflection point between the cutting edge and the proximal convex portion and between the proximal convex portion and the distal concave portion, and
wherein the second side of the chemically etched blade includes at least two repeating profiles so that the first side of the chemically etched blade and the second side of the chemically etched blade are symmetric at the centerline of the metal base.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/057,674Filed 1 Mar 2016 · us provisional application
Priority: 2 Mar 2015
Published: US 2016/0257006 A18 Sep 2016
Granted: 10 Dec 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

B26D 1/0006
Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus…:…
B26B 9/00
Blades for hand knives
B26B 9/02
Blades for hand knives: characterised by the shape of the cutting edge, e.g. wavy
C23F 1/04
Local etching: chemical milling

Family

Application62/127,083Us provisional application · filed 2 Mar 2015
US 2016/0257006 A1Pre-grant publication · published 8 Sep 2016
US 10,500,748 B2This patent

From the US filing history. Foreign family members aren’t listed.

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