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
Sterilizable film for aseptic packaging
Rule-based stimulation program search
Method of modified facies proportions upon history matching of a geological model
Grounding fitting
Detecting patterns of abuse in a virtual environment
Bi-directional pattern dependent noise prediction
Liquid crystal shutter glasses
  Randomly Featured Patents
Exhaust gas purifying apparatus of internal combustion engine
Double safety thermostat having movable contacts disposed in both ends of a resilient plate
Water drainage system
Venting constant velocity joint
High efficiency mode-matched solid-state laser with transverse pumping and cascaded amplifier stages
Authentication system for PC cards
Heat-shrinkable polyester film, process for production thereof, and package
Wireless communications device with network cache function
Heatable windshield
Precision light exposure timing and shutter mechanism for a wide range of exposure durations