Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Tools & Hardware
Class Information
Number: 451/16
Name: Abrading > Precision device or process - or with condition responsive control > With feeding of tool or work holder > Screw actuated > Ratchet and pawl drive
Description: Subject matter including use of a circular toothed wheel (i.e., ratchet wheel) which is held in position or propelled by a feather (i.e., pawl), which wheel serves to turn the screw.










Sub-classes under this class:

Class Number Class Name Patents
451/18 Cam actuated 3
451/19 Hydraulically driven 9
451/17 Sizing gauge controlled 10
451/20 Table dog actuated 3


Patents under this class:

Patent Number Title Of Patent Date Issued
8550876 Force-controlled surface finishing through the use of a passive magnetic constant-force device Oct. 8, 2013
8414789 Method and composition for chemical mechanical planarization of a metal Apr. 9, 2013
7246424 Magnetic devices having magnetic features with CMP stop layers Jul. 24, 2007
4680896 Tool unloading mechanism for automatic tool grinding machine Jul. 21, 1987
4628642 Device for sharpening circular knives Dec. 16, 1986
4213277 Method for dressing a grinding wheel Jul. 22, 1980











 
 
  Recently Added Patents
Reference circuit with curvature correction using additional complementary to temperature component
Acceleration based mode switch
Vehicle and method for controlling vehicle
Electrical event detection device and method of detecting and classifying electrical power usage
Electron beam manipulation system and method in X-ray sources
Light barrier and method for detecting objects
Apparatus and method for transferring a data signal propagated along a bidirectional communication path within a data processing apparatus
  Randomly Featured Patents
Display device in or for use in a timepiece
Coal water suspensions involving carbon black
Center-fire bow
Magnetically insulated cold-cathode electron gun
Substrate handling system for aligning and orienting substrates during a transfer operation
Holographic patterning method and tool for production environments
Electroless copper solution
Failure isolation in a communication system
Massage garment for animals
Synchronization adder circuit