The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 26, 2015

Filed:

May. 29, 2014
Applicants:

William T. Bell, Huntsville, TX (US);

James G. Rairigh, Houston, TX (US);

Inventors:

William T. Bell, Huntsville, TX (US);

James G. Rairigh, Houston, TX (US);

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 29/02 (2006.01); E21B 43/117 (2006.01); F42B 3/08 (2006.01); F42B 1/02 (2006.01);
U.S. Cl.
CPC ...
E21B 29/02 (2013.01); E21B 43/117 (2013.01); F42B 3/08 (2013.01); F42B 1/02 (2013.01);
Abstract

A shaped charge casing cutter is constructed with the cutter explosive formed into radial section modules aligned in a toroidal cavity between a pair of housing plates. The center sections of the plates are contiguously aligned with opposite parallel surfaces of a center disc. The plate rims are offset from respective center disc planes in opposite directions from each other to form a toroidal cavity. The toroidal cavity is enclosed by a circumferential belt secured to said plate rims. V-grooved shaped charge explosive in the form of multiple pi sections is distributed about the cavity to intimately contact a pair of frusto-conical liners.


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