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Class Information
Number: 30/457
Name: Cutlery > Static pencil sharpener > Having conical or cylindrical work guide
Description: Device wherein the work holder or guide is cylindrical or conical in shape or the section adjacent the end of the workpiece to the shaped.










Sub-classes under this class:

Class Number Class Name Patents
30/461 Adjustable or resilient cutter structure 12
30/458 And mounting base or handle 8
30/460 Open-ended for point protection during writing 2


Patents under this class:

Patent Number Title Of Patent Date Issued
7908749 Sharpener for stick-shaped cosmetic material Mar. 22, 2011
7654179 Crayon sharpener Feb. 2, 2010
7523557 Carpenter's pencil sharpener Apr. 28, 2009
7363714 Pencil sharpener Apr. 29, 2008
7225547 Pencil sharpener Jun. 5, 2007
7036231 Sharpener for an oval pencil May. 2, 2006
6976314 Sharpener for soft-core pencils Dec. 20, 2005
6966117 Carpenters pencil sharpener Nov. 22, 2005
6948251 Pivoting sharpening device for pencil with non-circular cross section Sep. 27, 2005
6938345 Combination utility knife Sep. 6, 2005
6883697 Office tool assembly Apr. 26, 2005
6732437 Soft lead sharpener with pivotable profile knife May. 11, 2004
6676500 Drill bit sharpener Jan. 13, 2004
6634108 Sharpener for sharpening a soft-core pencil Oct. 21, 2003
6571480 Pencil sharpener for carpenter's pencil Jun. 3, 2003
6568090 Cosmetic pencil sharpener May. 27, 2003
6494638 Power drive adapter device Dec. 17, 2002
6427343 Pencil sharpener having a pencil limiting device Aug. 6, 2002
6397480 Mechanism for sharpening a writing instrument Jun. 4, 2002
6397479 Sharpener, in particular for soft-core pencils Jun. 4, 2002
6393705 Cosmetic pencil sharpener May. 28, 2002
6381856 Hand-held sharpener as a container-type sharpener May. 7, 2002
6309088 Combined pencil sharpener and ink stamp with illumination device Oct. 30, 2001
6279237 Sharpener Aug. 28, 2001
6249981 Structure of a pencil sharpener Jun. 26, 2001
6237656 Pencil sharpener bit May. 29, 2001
6092293 Pencil sharpener Jul. 25, 2000
5894669 Sharpener for soft core pencils Apr. 20, 1999
5875555 Crayon sharpener assembly Mar. 2, 1999
5774995 Candle sharpening system Jul. 7, 1998
5647138 Cap sharpener for clutch-type pencil Jul. 15, 1997
5379817 Sharpener for a soft element pencil Jan. 10, 1995
5205664 Lead-auto-sharpened propelling pencil and the making process thereof Apr. 27, 1993
5167071 Cosmetic pencil sharpener Dec. 1, 1992
5161587 Pencil sharpener with acoustical and lamplight indicating effect Nov. 10, 1992
5046876 Safety tipped pencil and sharpener therefor Sep. 10, 1991
4934057 Multi-blade pencil-core sharpener Jun. 19, 1990
4761885 Sharpener for compass leads and pencil leads Aug. 9, 1988
4598478 Sharpener press-button Jul. 8, 1986
4506716 Pencil sharpener Mar. 26, 1985
4497354 Low noise planing machine, particularly hand planer Feb. 5, 1985
4231405 Pencil driven mechanical pencil sharpener Nov. 4, 1980
4066109 Pencil sharpener with replaceable blades Jan. 3, 1978
3980114 Combined pencil clip and sharpener Sep. 14, 1976











 
 
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