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.
Patent No.:
Date of Patent:
May. 16, 1978
Filed:
Feb. 26, 1976
Applicant:
Inventor:
Bobby J Hallmark, Fort Worth, TX (US);
Assignee:
Gearhart-Owen Industries, Inc., Fort Worth, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175-46 ; 102 216 ; 102 / ; 175-455 ;
Abstract
Improved end closures for shaped charge unit chambers in borehole perforating tools have flanged peripheral portions to be clamped in the threaded joint when sidewalls of adjacent chambers are threadedly joined. Also disclosed are sealing means for conductor wires passing through the end closures, which sealing means involves means for compressing and deforming the conductor insulation so that the conductors with their insulation sealingly occupy a predetermined space between surfaces of cooperating compressing and deforming means.