Knife sharpener

Details Knife sharpener Knife sharpener

1983-01-28

1985-12-17

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51205WG, 76 82, 76 88, B24D 1508

Patent

active

045585407

ABSTRACT:
A knife sharpener includes an elongated sharpening element held within a tray that selectively telescopes within one end of a handle to store the element. The handle has a forward surface that lies in an inclined plane and approaches the sharpening surface of the extended sharpening element at the correct angle for sharpening the cutting edge of a knife blade so as to provide a sharpening guide. The tray and handle provide a thumb-operated, bolt-action device for extending and retracting the tray and its sharpening element, for locking the tray in its extended and retracted positions, and for selectively releasing the tray from its locked positions. The sharpening element may be a block of ceramic abrasive material surfaced on one face with a diamond-studded cloth to provide a coarse abrasive sharpening surface and longitudinally grooved on an opposite face to provide a fine abrasive honing surface.

REFERENCES:
patent: 651462 (1900-06-01), Jones
patent: 882137 (1908-03-01), Brandenburg
patent: 932724 (1909-08-01), Smith
patent: 1738496 (1929-12-01), Laux
patent: 1976070 (1934-10-01), Hermann
patent: 2284168 (1942-05-01), Rickenbacher
patent: 2288407 (1942-06-01), Lada
patent: 2308624 (1943-01-01), Pouech
patent: 2988933 (1961-06-01), Buck
patent: 3719461 (1973-03-01), Topping
patent: 4094106 (1978-06-01), Harris

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