Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/419
Name: Boring or penetrating the earth > Bit or bit element > Impact or percussion type > With internal-fluid passage > Cruciform
Description: Apparatus comprising a plurality of cutting edges which lie in perpendicular planes intersecting at a line coinciding with the longitudinal axis of the bit.










Patents under this class:

Patent Number Title Of Patent Date Issued
8127863 Drill bit having enhanced stabilization features and method of use thereof Mar. 6, 2012
7882908 Drill Feb. 8, 2011
7540341 Drill bit Jun. 2, 2009
7296641 Rock drill bit having outer and inner rock-crushing buttons Nov. 20, 2007
6845827 Rock drill head Jan. 25, 2005
5836408 Rotary percussion blow assisted drill Nov. 17, 1998
4722402 Electromagnetic drilling apparatus and method Feb. 2, 1988
4716976 Rotary percussion drill bit Jan. 5, 1988
4265325 Percussion rock bit May. 5, 1981
4185708 Bit for drilling holes in rocks Jan. 29, 1980
4026372 Drill bits May. 31, 1977











 
 
  Recently Added Patents
Coordinate measuring device and method for measuring with a coordinate measuring device
High damage threshold frequency conversion system
Group of amino substituted benzoyl derivatives and their preparation and their use
Sub-resolution assist feature repair
Systems and methods for adaptive blind mode equalization
Systems and methods for providing television signals using a network interface device
Stowable pet leash and collar
  Randomly Featured Patents
Chlorinated, alumina-based, bimetallic catalyst and its use in the isomerization of C.sub.4 -C.sub.6 paraffins
Gate lock
Multiprocessor node controller circuit and method
Maximum-likelihood decoding method and device
Acoustic signal processing apparatus, acoustic signal processing method and computer readable medium
Method of expanding hepatic precursor cells
Sensorially active substance embedded in plastic
23S rRNA nucleic acid probes to mycobacterium kansasii
Softproofing via modeling print engine rendering characteristics
Cosmetics vessel