Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 144/28.3
Name: Woodworking > Special-work machine > Pencil sharpening > Movable tool
Description: Machine including means to move, or to guide the movement of, the tool relative to the workpiece and to the tool-retaining means, for the material-removing operation.










Sub-classes under this class:

Class Number Class Name Patents
144/28.9 Rotary work holder or guide 5
144/28.6 Rotatable or revolvable 17
144/28.4 Work actuated tool drive 9
144/28.5 Work controlled switch for tool drive 22


Patents under this class:

Patent Number Title Of Patent Date Issued
8205648 Electronic pencil sharpener Jun. 26, 2012
6237656 Pencil sharpener bit May. 29, 2001











 
 
  Recently Added Patents
High gradient lens for charged particle beam
Magnetic levitation motor used in lens module
Imaging lens with three lens elements, and electronic apparatus having the same
Method and system for generating and displaying an interactive dynamic selective view of multiply connected objects
Assembly for providing an aligned stack of two or more modules and a lithography system or a microscopy system comprising such an assembly
Duty cycle adjustment of remote illumination source to maintain illumination output
Method for detecting directions of regularity in a two-dimensional image
  Randomly Featured Patents
Automatic erasing device for erasing chalk marks on a writing board
Internally mounted bicycle transmission
Method and apparatus for reduced oil consumption and oil deterioration in reciprocating engines
Chain of trust processing
Method of treating HIV infection by combined use of a cytotoxic agent and a non-nucleoside reverse transcriptase inhibitor
Method for making reinforced ion exchange membranes
Travel sleeping pillow
Transmission apparatus, transmission method, and program
Interference checking device
Method of storing volatile substances, container for storing said substances, and flow-control method for surface flow of superfluid helium