Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 144/28.7
Name: Woodworking > Special-work machine > Pencil sharpening > Movable tool > Rotatable or revolvable > Planetary
Description: Machine including means to rotate the tool on its own axis and simultaneously to revolve it about another axis through the workpiece so as to maintain it in material-removing contact with the workpiece.

Sub-classes under this class:

Class Number Class Name Patents
144/28.71 Plural tools 5

Patents under this class:

Patent Number Title Of Patent Date Issued
8505596 Cutter assembly for an electric pencil sharpener Aug. 13, 2013
7726365 Electric pencil sharpener Jun. 1, 2010
7699082 Electric multi-pencil sharpener Apr. 20, 2010
6886614 Pencil sharpener May. 3, 2005
6845795 Portable handheld sharpener with loop attachment Jan. 25, 2005
4966208 Pencil sharpener Oct. 30, 1990
4961451 Sharpener for rectangular pencils Oct. 9, 1990
4054164 Pencil sharpener Oct. 18, 1977

  Recently Added Patents
Fixing apparatus
Aware manufacturing of integrated circuits
Catheter with multiple electrode assemblies for use at or near tubular regions of the heart
Apparatus for tuning a musical instrument, and a related instrument
Generating a representation of an object of interest
Methods and systems for flicker correction
Technique for effectively providing program material in a cable television system
  Randomly Featured Patents
Multi-row rolling mills, methods of operating these mills, and rolling equipment using the mills
Liquid crystal display device
Methods and apparatus for rich image capture with focused plenoptic cameras
Method to configure a communication link for a data transmission
Rocking chair
Remote detection of peroxide compounds via laser induced fluorescence
Toilet brush head
Assembly to secure engine camshaft
Agent for transdermal administration containing ergoline derivatives
Masonry block system