Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 175/4.59
Name: Boring or penetrating the earth > Boring with explosion in inaccessible hole > Projectile forms bore > With means to prevent preliminary bore fluid contact
Description: Subject matter directed to means which are provided to prevent ambient fluid in the hole from coming in contact with the missile until propulsion of the missile commences.

Patents under this class:

Patent Number Title Of Patent Date Issued
6557650 Method and apparatus for protecting explosives May. 6, 2003
6386296 Method and apparatus of protecting explosives May. 14, 2002
4467878 Shaped charge and carrier assembly therefor Aug. 28, 1984
4063509 Device for stimulation of geothermal wells Dec. 20, 1977
3939927 Combined gravel packing and perforating method and apparatus for use in well bores Feb. 24, 1976

  Recently Added Patents
System for thermally controlling displays
Drug delivery system
Digital broadcasting system and method of processing data
String changing tool with a quick connector assembly and worm gear string cutter
System for targeted delivery of therapeutic agents
Method and system for cooling of integrated circuits
Nucleotide sequence coding for variable regions of .beta. chains of human T lymphocyte receptors, corresponding peptide segments and the diagnostic and therapeutic uses
  Randomly Featured Patents
Control circuit with a level shifter for switching an electronic switch
Scrap stacking apparatus and sheet processing apparatus
Method of loading a bulk cargo
Quick-release switch with forced opening with improved mounting tolerance
Actuating system for changing a fishing reel from a retrieve state into a cast state
Method of immunosuppression
Heddle frame endbrace assembly
System employing data verification operations of differing computational costs
Automatic flush device