Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/259
Name: Boring or penetrating the earth > Tool removable or insertable through or around driving or driven shaft or casing > Laterally shiftable cutter element movable through shaft > Plural cutter elements longitudinally relatively movable into transverse alignment
Description: Apparatus in which a plurality of cutter elements are movable through the shaft, said cutter elements being movable relative to each other in the direction of the longitudinal axis of the shaft to an operative position in which the cutting edges of the cutter elements lie in the same transverse plane perpendicular to the longitudinal axis of the shaft.










Patents under this class:

Patent Number Title Of Patent Date Issued
8668031 Drill bit and method for inserting, expanding, collapsing, and retrieving drill bit Mar. 11, 2014
6695074 Method and apparatus for enlarging well bores Feb. 24, 2004
6691803 Drill bit assembly having pivotal cutter blades Feb. 17, 2004
6454024 Replaceable drill bit assembly Sep. 24, 2002
6206114 Tool for transporting cutting means to and from a ground drill Mar. 27, 2001
6059053 Retraction system for a latching mechanism of a tool May. 9, 2000
5957224 Double bit assembly and method of using the same Sep. 28, 1999
5881827 Extendable bit Mar. 16, 1999
5813481 System for in situ replacement of cutting means for a ground drill Sep. 29, 1998
5743344 System for in situ replacement of cutting means for a ground drill Apr. 28, 1998
5472057 Drilling with casing and retrievable bit-motor assembly Dec. 5, 1995
5197553 Drilling with casing and retrievable drill bit Mar. 30, 1993
5148875 Method and apparatus for horizontal drilling Sep. 22, 1992
5074366 Method and apparatus for horizontal drilling Dec. 24, 1991
4760888 Drill bit for core boring Aug. 2, 1988











 
 
  Recently Added Patents
Correcting color plate data for mis-registration in a sub-scanning direction by performing a pixel transition at the transition point aligned in the main-scanning direction
Method and system for generating and displaying an interactive dynamic selective view of multiply connected objects
Controlling generation of debug exceptions
Disk drive increasing capacity by adjusting a servo gate during write operations
Droplet generation and detection device, and droplet control device
Storing a location within metadata of visual media
Chain link
  Randomly Featured Patents
Ceramic oxide circuit board
Speech-driven selection of an audio file
Method for dissolving delta-phase plutonium
Optoelectric angle-measuring device
Editing control system for recording and/or reproducing apparatus for video tape and so forth with high efficiency pre-view operation
De-emulsifier for breaking petroleum emulsions
Nestable flat bed cart
Container for cosmetic products
Method for fixing semiconductor bodies on a substrate using wires
Seal for turbine engine