IP Library › Granted Patent US 11,931,912
Granted Patent B2
US 11,931,912 · App. 17/450,001 · Granted Mar 19, 2024

Kitchen knife

Inventors: Iranpour Khormaei (Vancouver, WA); Eytan Zias (Portland, OR); Patrick Scranton (Vancouver, WA)
Assignee: STEELPORT KITCHENWARE, INC.
B26B3/02B21D53/64B21D53/70
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Quick Facts
Patent No.
US 11,931,912
App. No.
17/450,001
Granted
Mar 19, 2024
Kind
B2
Abstract

Knives, handles for knives, and a method for making a knife are disclosed. In one example, a knife comprises a handle that includes a flat top surface, two upper chamfers, a flat bottom surface, and two curving sides. The top surface, the two chamfers, bottom surface, and two sides form a six-sided cross section shape. The width of the handle further varies along its length. A blade fastened to the handle comprises a tip at a distal end and a pinch radius configured to accommodate a user's finger. A spine is continuous with the handle's top surface and tapers from the handle to the tip. A cutting edge tapers along the length of the blade from the pinch radius to the tip. A bolster is between the handle and the blade and comprises a six-sided cross section shape that substantially matches the shape of the handle.

Claims (28)

1. A knife, comprising:

a handle comprising,

a substantially flat top surface,

two upper chamfers each adjacent to a separate edge of the substantially flat top surface,

a substantially flat bottom surface, and

two sides that each curve between one of the two upper chamfers and the substantially flat bottom surface,

wherein the substantially flat top surface, the two upper chamfers, the substantially flat bottom surface, and the two sides form a six-sided cross section shape,

wherein the handle further comprises a width that varies along a length of the handle;

a blade fastened to the handle, the blade comprising,

a tip at a distal end of the blade opposite the handle,

a pinch radius opposite the tip, wherein the pinch radius is configured to accommodate a finger of the holder,

a spine that tapers along a length of the blade from the handle to the tip, and

a cutting edge that tapers along the length of the blade from the pinch radius to the tip; and

a bolster positioned between the handle and the blade, the bolster comprising the six-sided cross section shape.

2. The knife of claim 1 , wherein the varying width of the handle creates a bulge feature between an extended tang of the blade and the bolster.

3. The knife of claim 2 , wherein the varying width of the handle comprises a first width at a narrowest part of the handle and a second width wider than the first width at a widest part of the handle that is between the narrowest part and the bolster.

4. The knife of claim 1 , wherein the spine is continuous with the substantially flat top surface of the handle.

5. The knife of claim 1 , wherein the six-sided cross section shape of the bolster has a first cross-sectional area that is less than a second cross-sectional area of the six-sided cross section shape of the handle.

6. The knife of claim 1 , wherein a width of the blade tapers from 2.0 inches at a heel of the blade to 1.0 inch adjacent to the tip where the spine curves downwardly to the tip.

7. A wooden handle for a knife, the handle configured to guide a user to hold the knife in a functional grip and support comfortable use of the knife, the handle comprising:

a substantially flat top surface;

two upper chamfers each adjacent to a separate edge of the substantially flat top surface;

a substantially flat bottom surface; and

two sides that each curve between one of the two upper chamfers and the substantially flat bottom surface;

wherein the substantially flat top surface, the two upper chamfers, the substantially flat bottom surface, and the two sides form a six-sided cross section shape;

wherein the handle further comprises a width that varies along a length of the handle to create a bulge feature between an extended tang of a blade of the knife and a bolster of the knife; and

wherein the width of the handle is configured to conform to a hand of a holder.

8. The wooden handle of claim 7 , wherein the varying width of the handle comprises a first width at a narrowest part of the handle and a second width wider than the first width and spaced from the narrowest part.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 5, 2021
From: KHORMAEI, IRANPOUR; SCRANTON, PATRICK; ZIAS, EYTAN
To: STEELPORT KITCHENWARE, INC.
Reel/Frame 057705/0195 →
Continuity (2)
Provisional Application 63087729 · Oct 5, 2020
Related Publication 20220105646A1 · Apr 7, 2022