Blade Sharpener

a blade and blade technology, applied in the field of blade sharpeners, can solve the problems of grinding dust from the blade clogging the pores of the abrasive wheel, the device has problems, and the blade is dulled, so as to prevent variations in the force of pressing the cutting edge and grind the blade further evenly and smoothly

US20130295823A1Inactive Publication Date: 2013-11-07HASEGAWA TOM HIROSHI +1
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Publication Date
2013-11-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

A blade sharpener including a frame casing body having a grip and a grinding chamber and a grinder assembly detachably installed in the grinding chamber in which the grinder assembly is formed by a grinder casing body having a pair of vertical walls facing each other, a supporting window provided in each of the vertical walls, a rotary shaft provided between the vertical end walls with both end thereof in the supporting windows of the vertical walls, an abrasive wheel provided on the rotary shaft at the axial center, and a pair of lateral coil springs each provided on either side of the abrasive wheel. The rotary shaft can be supported by a pair of longitudinal coil springs installed in the vertical walls.
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Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a blade sharpener that sharpens blades such as kitchen knives and table knives with an abrasive wheel and more particularly to a manual blade sharpener having an abrasive wheel therein.

[0003] 2. Background Art

[0004] Japanese Patent Application Laid-Open (Kokai) No. S62-181860 discloses a table knife sharpener that is comprised of a frame casing body, a adhesive wheel rotatably installed in this frame casing body and equipped with grinding surfaces that are of a truncated cone shape and forming an angle to each other, a guide part that guides the blade so that the blade being sharpened is pressed against both grinding surfaces, and a liquid vessel installed in the frame casing body so as to surround the bottom part of the abrasive wheel.

[0005] In this device, two sides of the blade of a knife is pressed against the two sides of the grindstone and the knife is moved back and forth at a bias r...

Examples

Embodiment Construction

[0041]Preferred embodiments of a blade sharpener according to the present invention will be described in detail below with reference to the accompanying drawings.

[0042]FIGS. 1 and 2 illustrate an example of a frame casing body 1 of the blade sharpener according to the present invention. The frame casing body 1 is made of, for instance, synthetic resin and includes a grip 2 and a grinding chamber 3 which is connected to the end of the grip 2 and is substantially in a rectangular box shape having a size of for instance 2.5 inches (W)×4 inches (L)×2.5 inches (H). The grinding chamber 3 is provided with a removable cover, casing 4 covering the upper opening of the grinding chamber 3, and this removable cover casing 4 is formed with two blade guide slits 5 which extend in the width direction W of the grinding chamber 3 so as to open continuously to the above and to both sides of the cover casing 4.

[0043]On the rectangular bottom 3a of the grinding chamber 3, one pair of (or two) holding ...