Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 144/28.72
Name: Woodworking > Special-work machine > Pencil sharpening > Movable tool > Rotatable or revolvable > Including orbital or electric motor drive
Description: Machine including means for rotating the tool, which means either (a) includes a pair of rotatable elements having peripheral surfaces in continuous engagement with, and movable relative to, one another for transfer of motive force between said elements or (b) is powered by electrical energy.










Patents under this class:

Patent Number Title Of Patent Date Issued
8505596 Cutter assembly for an electric pencil sharpener Aug. 13, 2013
8353323 Sharpener with autostop feature Jan. 15, 2013
8225827 Sharpener with noise reducing features Jul. 24, 2012
8205648 Electronic pencil sharpener Jun. 26, 2012
8205649 Cutter assembly and electric pencil sharpener Jun. 26, 2012
8196624 Pencil sharpener Jun. 12, 2012
7913731 Pencil sharpener Mar. 29, 2011
7726365 Electric pencil sharpener Jun. 1, 2010
7699082 Electric multi-pencil sharpener Apr. 20, 2010
7669619 Electric pencil sharpener Mar. 2, 2010
7581573 Electric pencil sharpener Sep. 1, 2009
7546858 Pencil sharpener Jun. 16, 2009
7472728 Electrically powered rapid sharpening cosmetic pencil sharpener Jan. 6, 2009
7455087 Electric sharpener for writing instruments Nov. 25, 2008
7360566 Structure of automatic pencil sharpener Apr. 22, 2008
7273079 Electric pencil sharpener Sep. 25, 2007
7240703 Automatic pencil sharpener Jul. 10, 2007
7134461 Pencil sharpener Nov. 14, 2006
6886614 Pencil sharpener May. 3, 2005
6845795 Portable handheld sharpener with loop attachment Jan. 25, 2005
6688197 Notch sawing apparatus for dove-tail joints Feb. 10, 2004
6637481 Apparatus for sharpening a writing instrument Oct. 28, 2003
6470929 Pencil sharpener Oct. 29, 2002
6457498 Cosmetic eye and lip pencil sharpener Oct. 1, 2002
5052453 Structure of pencil sharpener Oct. 1, 1991
4966208 Pencil sharpener Oct. 30, 1990
4601316 Electric pencil sharpener Jul. 22, 1986











 
 
  Recently Added Patents
High density vertical structure nitride flash memory
Method and system for generating and displaying an interactive dynamic graph view of multiply connected objects
Soybean cultivar CL1013663
Variants of a family 44 xyloglucanase
System and method of improving audio signals for the hearing impaired
Disk-based storage device having read channel memory that is selectively accessible to disk controller
Method for editing a media clip in a mobile terminal device, a terminal device utilizing the method and program means for implementing the method
  Randomly Featured Patents
Combination dice, card and roulette gambling game
Two piece casting wheel
Protective grounding electrical receptacle with repositional plug acceptors
Hydraulic actuator-control arrangement for concrete pump
Shielding device
Object classification using image segmentation
Detecting the presence of an installation on a data processing system based on the relative storage locations of one or more files
Process for the double-sided exposure of a semiconductor or substrate plates, especially wafers, as well as apparatus for the purpose of parallel and rotational alignment of such a plate
Implementation of a DV video decoder with a VLIW processor and a variable length decoding unit
Internally generated rotor set for low viscosity and abrasive metering applications