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
Automatic actuator for breakers or switches
Mobile communication device
Erasing a non-volatile memory (NVM) system having error correction code (ECC)
Semiconductor devices having multi-width isolation layer structures
Wrench head
Newly identified human rhinovirus of HRV-C and methods and kits for detecting HRV-Cs
Flexure with insulating layer isolating a portion of a metal substrate
  Randomly Featured Patents
Electrochromic display device and its manufacturing method
Cover for pneumatic tool
Easily feedable envelope construction
Vector quantization of a time sequential signal by quantizing an error between subframe and interpolated feature vectors
Method, system, and device for configuring operation, administration and maintenance properties
Knee disarticulation/low-profile prosthetic knee-joint assembly including adjustable distal coupling
Method and apparatus for intelligent attitude and orbit control onboard a satellite
Audio distortion eliminator
Coextrusion method and apparatus
Printing system and method for handling unfixed pages in such a printing system