Patent ID: 7172500

Claim:
A knife sharpener comprising: a housing having a case having a proximal end, a top and an outer surface, a cavity defined in the case, and a slot defined in the top of the case and communicating with the cavity a base mounted on the housing and having a base board being rectangle and having two ends, two side edges, two side walls respectively formed on the side edges of the base board, each side wall having an inner surface, a center, and an operating hole defined through the base board near the center, a sharpening device movable mounted on the base, received inside the housing and having two sharpening arms mounted on the base, each sharpening arm having a seat received inside the base and having a threaded hole defined through the seat, and an arm mounted on and inclinedly extending from the seat and having an outer surface, a top end, a bottom end, and a holding recess defined in the outer surface of the arm, and two sharpening rods respectively received inside the holding recesses in the arms, an adjusting device mounted on the sharpening device between the two arms of the sharpening device and having a threaded rod having two ends, the two ends of the threaded rod respectively mounted through the seats of the sharpening device, and an adjusting wheel mounted on the threaded rod and partially extending out the operating hole in the base.