Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 175/392
Name: Boring or penetrating the earth > Bit or bit element > Bit with leading portion (e.g., pilot) forming smaller diameter initial bore > Leading portion is forked rotary type
Description: Apparatus comprising a rotary bit in which the leading or pilot portion is provided with two or more axially extending branches terminating in cutting edges.

Patents under this class:

Patent Number Title Of Patent Date Issued
7513319 Reamer bit Apr. 7, 2009
6502649 Ice auger cutting head Jan. 7, 2003
6202768 Rock drilling tool and reamer for percussive drilling Mar. 20, 2001
4550791 Two-prong rotary bit, especially for use with roof drills, and insert therefor Nov. 5, 1985
4074780 Earth auger Feb. 21, 1978
3995706 Earth auger drill Dec. 7, 1976

  Recently Added Patents
Method and apparatus for triggering expiration of a data tag device
Audio/video program-related hyperlink printer
High order continuous time filter
Compression molding method and reinforced thermoplastic parts molded thereby
Gas sensor with a porous layer that detectably affects a surface lattice resonant condition of a nanoparticle array
Wireless communication system, associated methods and data structures
Information display device and program storing medium
  Randomly Featured Patents
Couplings for molten metal devices
Vehicle roof device
Driving device and driving method of organic thin film EL display
Coated tantalum feedthrough pin
Overshoe for use while finishing concrete
Polarization-resolving infrared imager
Mail sorting and sequencing system
Tough, long-lasting dental composites
Reset circuit with transient detection function
Centrifugal impeller