Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 175/295
Name: Boring or penetrating the earth > Below-ground (1) hammer, or (2) impact members > With noncutting portion forwardly of sleeve impact member having a cutting portion (e.g., reamer)
Description: Apparatus in which the hammer or impact device comprises an outer sleeve provided with cutting edges and mounted for longitudinal sliding movement on a shaft, said shaft having a portion extending forwardly of said sleeve which has a noncutting function.










Patents under this class:

Patent Number Title Of Patent Date Issued
8657038 Expandable reamer apparatus including stabilizers Feb. 25, 2014
8439135 Down-the-hole drill hammer having an extendable drill bit assembly May. 14, 2013
8381843 Well bore reamer Feb. 26, 2013
8297381 Stabilizer subs for use with expandable reamer apparatus, expandable reamer apparatus including stabilizer subs and related methods Oct. 30, 2012
7168509 Percussive reamer and method of use thereof Jan. 30, 2007
6283229 Impact device for directional boring Sep. 4, 2001
5339909 Apparatus for making earth bores Aug. 23, 1994
5127481 Percussion boring machine for destructive replacement of buried pipelines Jul. 7, 1992
4858703 Self-propelled subsoil penetrating tool system Aug. 22, 1989
4732222 Ram boring machine with impact blade piston Mar. 22, 1988











 
 
  Recently Added Patents
Management of computer-file sharing between at least two devices
Process for preparation of Efavirenz
Process for recovering and recycling an acid catalyst
Stable liquid VEGF antagonist formulations
Hand mixer
Thermochromic microparticles, dispersions thereof, and manufacturing method thereof, as well as light-modulating coatings, light-modulating films and light-modulating inks
Thermal conductivity and phase transition heat transfer mechanism including optical element to be cooled by heat transfer of the mechanism
  Randomly Featured Patents
Seedling growing container
Bi-directional system for mass spectrometry
Method of vulcanizing bromobutyl rubber with amino acids
Single electron MOSFET memory device and method
Wall-mounted sliding door system and method
Library manager for automated programming of industrial controls
Ship for transporting coal slurry
Non-explosive linear release device
Combined rearview mirror and nine pixel signalling indicator
Data structure supporting random delete and timer function