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Class Information
Number: 175/4.53
Name: Boring or penetrating the earth > Boring with explosion in inaccessible hole > Firing chamber movable in bore relative to carrier or another firing chamber
Description: Subject matter directed to (1) a chamber for an explosive charge which is movable while it is in the hole relative to a body or frame which supports the chamber in the hole or (2) plural chambers which are connected together so as to permit relative movement between the chambers while they are in the hole.

Patents under this class:

Patent Number Title Of Patent Date Issued
8684083 Perforating gun with rotatable charge tube Apr. 1, 2014
8443886 Perforating gun with rotatable charge tube May. 21, 2013
7997353 Through tubing perforating gun Aug. 16, 2011
7721820 Buffer for explosive device May. 25, 2010
6978848 Method and apparatus for penetrating subsurface formations Dec. 27, 2005
6805056 Method and apparatus for removing abandoned tubular members Oct. 19, 2004
6378625 Perforating gun Apr. 30, 2002
6371219 Oilwell perforator having metal loaded polymer matrix molded liner and case Apr. 16, 2002
6148916 Apparatus for releasing, then firing perforating guns Nov. 21, 2000
6125946 Perforating gun Oct. 3, 2000
5662178 Wave strip perforating system Sep. 2, 1997
5224556 Downhole activated process and apparatus for deep perforation of the formation in a wellbore Jul. 6, 1993
5095801 Pivot gun having charges which slidingly engage a stationary detonating cord and apparatus for deploying the charges Mar. 17, 1992
4961365 Perforating gun with rotating charges including a mechanical link retaining mechanism Oct. 9, 1990
4844167 Through-tubing perforating apparatus Jul. 4, 1989

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