US 5,397,262 AGranted

Knife grinder

OwnerChuen-Cherng Liiinventor

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Abstract

An improved knife grinder is desinged to have a motor transmission axle which transmits one or two units of wheel axle with its angles which are facing one another and entend slightly upward and outward. A base is fixed onto the vertical bottom surface which extends from the wheel shaft in coordination with the bearing positioning wheel axle, onto the upper end of which an axle bush can be housed. One or two units of glaze wheel is fitted onto the outer edge of the axle bush. While a stripe column is housed onto the position which is corresponding to the axle bush at its interior. Extending outward from the glaze wheel, three layers made of such materials as plastic, foam and grinding cloth are formed. A stair face is set on the upper end of the plastic layer, into which a positioning cover can be housed, and its mutli-angled protrusive column will be housed into the axle bush positioning hole; while the multi-angled groove at the other end will allow the wheel axle to be tightly screwed by a scew nut. By housing onto the upper cover of the machine body outside the grinding wheel, opening grooves are set corresponding to the interior lateral side of the grinding wheel will form a knife resting face separately, and into the opening grroves the lateral surface of various kinds of knife tools can be inserted.

Claims1

Dependent claims

An improved knife grinder for a knife comprising:

a body including a base having a base face,
a motor spindle disposed in said base,
a transmission axle disposed in said base and coupled to said motor spindle,
two wheel axles coupled to said transmission axle and extending upward and outward through said base face, said two wheel axles facing each other in a 10-degree oblique angle and including an approximately 40-degree angle of elevation relative to said base face,
two axle bushes secured to said wheels axles and each including an outer peripheral surface having at least one groove formed therein,
two grinding wheels engaged on and secured to said axle bushes respectively and each including a plastic layer having at least one stripe column formed therein for engaging with said groove of said axle bushes, a foaming layer and a grinding cloth layer, said plastic layer including a stair face formed therein distal to said base face, said grinding wheels including lateral sides and each including a straight portion close to said base face and a conical portion distal to said base face,
two fixing covers engaged in said stair faces of said grinding wheels respectively and each including a multi-angled column engaged in said axle bushes respectively and having a multi-angled groove formed therein, said wheel axles including a free end extended into of said multi-angled grooves respectively,
two nuts engaged in said multi-angled grooves for engaging with said free ends of said wheel axles, and
an upper cover fixed onto said body for housing said grinding wheels, said upper cover including two opening grooves located corresponding to said lateral sides of said grinding wheels so as to form knife rests respectively for insertion of said knife.

6 more elements

Dependencies are inferred from the claim text.