Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/380
Name: Boring or penetrating the earth > Bit or bit element > Unsupported abrading particle type (e.g., shot)
Description: Apparatus in which the bit is particularly adapted to receive and restrain unsupported abrasive particles between its outer end and the bore bottom, said particles forming the cutting edge of the bit.










Patents under this class:

Patent Number Title Of Patent Date Issued
8342265 Shot blocking using drilling mud Jan. 1, 2013
8113300 Impact excavation system and method using a drill bit with junk slots Feb. 14, 2012
8087480 Device and method for feeding particles into a stream Jan. 3, 2012
6454028 Wear resistant drill bit Sep. 24, 2002
4042048 Drilling technique Aug. 16, 1977











 
 
  Recently Added Patents
Gas flow indicator
Memory device program window adjustment
Handbag
Case for electronic device
Output queued switch with a parallel shared memory, and method of operating same
Generating and using checkpoints in a virtual computer system
Position pointer, variable capacitor and inputting apparatus
  Randomly Featured Patents
Inflatable pads with adjustable static hold downs
Semiconductor device with capacitor electrodes
Dryer section of a paper or board machine including an arrangement for cutting a leader of the web
Mobile terminal and screen display method thereof
Apparatus for holding a large surface area thin work piece when shaping the work piece
Golf ball dispensing machine
Rod-shaped tool for machining a workpiece
Vertical lift door for gypsum board dryer or veneer dryer
Method of and apparatus for producing power using steam
System and method for measuring code segment performance