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
Integrated touch screen
Magnetic levitation motor used in lens module
Device and method for generating soft tissue contrast images
Sense-amplifier monotizer
Portable hand-held multi-function device for storing, managing and combining rewards
Method, apparatus and article for detection of transponder tagged objects, for example during surgery
  Randomly Featured Patents
Car controlling unit using a multitasking system
Pharmaceutical combination of MEK inhibitor and B-RAF inhibitors
Method and apparatus for a numerically controlled tapping machine
Conveying apparatus for paper products, in particular in stream form
Information processing apparatus, storage medium, and methodology for calculating an output value based on a tilt angle of an input device
Data communication apparatus and method for transmitting predetermined address for opening communication ports
Pressure regulating diaphragm
Gas switching section including valves having different flow coefficients for gas distribution system
Electrochemical cell anode and high discharge rate electrochemical cell employing same
Dual stage cyclone vacuum cleaner