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US 2003/0171083 A1Published application
Width adjustable sharpener
OwnerSheng Cheng Liinventor
Life of this patent
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Abstract
A knife sharpener includes a handle and an operation portion in which two grinding members are respectively and pivotably received. An aperture is defined through a top of the operation portion and communicates with the grinding members. Each of the two grinding members has a rod extending radially therefrom so as to be engaged with one of two respective spiral grooves of a shaft rotatably received below the grinding members. A positioning member is removably engaged with the shaft. A width between the two grinding members can be adjusted by rotating the shaft.
Claims7
A knife sharpener comprising:
- a handle and an operation portion in which a chamber is defined, an aperture defined through a top of the operation portion and communicating with the chamber;
- two grinding members respectively received in the chamber and each of the two grinding members having a grinding surface, an angle defined between the two respective grinding surfaces and communicating with the aperture, each of the two grinding members having a rod extending radially therefrom;
- a passage defined in the operation portion and a shaft rotatably received in the passage, two spiral grooves defined in an outer surface of the shaft and the two respective rods engaged with the two spiral grooves, and
- a positioning member engaged with the shaft.
1 more element
Dependencies are inferred from the claim text.