Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 175/416
Name: Boring or penetrating the earth > Bit or bit element > Impact or percussion type > Noncircular bore cutter
Description: Apparatus in which the bit is formed so as to normally cut a hole which is noncircular in cross section.

Patents under this class:

Patent Number Title Of Patent Date Issued
8272458 Drill bit with replaceable blade members Sep. 25, 2012
7120565 Method and apparatus for determining figure Oct. 10, 2006
6213232 Drilling tool helical shank formed from a polygonal profile bar Apr. 10, 2001
5743345 Drill bit for reverse drilling Apr. 28, 1998
4844186 Replaceable well drill bit Jul. 4, 1989
4074778 Square hole drill Feb. 21, 1978
4071100 Method of making holes of selected external configuration in preferably rock or ground formation, and a drilling machine for carrying out the method Jan. 31, 1978
4056154 Squaring off and reaming tool for deep elongated trench excavations Nov. 1, 1977

  Recently Added Patents
TPO compositions, articles, and methods of making the same
Surface emitting laser device, surface emitting laser array, optical scanning device, and image forming apparatus
Use of cocoa extract
Gate timing for short servo wedge in disk memory systems
Acoustic echo cancellation
Calibration of quadrature imbalances using wideband signals
Crystal structure of human JAK3 kinase domain complex and binding pockets thereof
  Randomly Featured Patents
Monitoring host apparatus, image forming apparatus, and access control method for access to their web pages
Aspirator pump device for use in semiconductor processing
Multiblock copolymer, method of preparing the same, polymer electrolyte membrane prepared from the multiblock copolymer, method of preparing the polymer electrolyte membrane, and fuel cell emp
Plate inking device
Active geophysical prospecting system
Negative-working image recording material
Valve including a step-up piston for controlling fluids
Pre-patterned circuit board device-attach adhesive transfer system
Production of combustible products from waste materials
Method of manufacture of compliant plate seals