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:
Jan. 07, 2003

Filed:

Nov. 21, 2000
Applicant:
Inventors:

Meinrad Zeh, Isny, DE;

Gerhard Blenk, Wertach, DE;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F41A 1/700 ;
U.S. Cl.
CPC ...
F41A 1/700 ;
Abstract

In order to secure firearms against unauthorized use, an insert is inserted into a portion of the barrel, which insert has an expandable sleeve. A first expanding device is releasably inserted into one end of the expandable sleeve to thus press lockingly against the inside wall of the barrel. A second expanding device is inserted into the other end of the expandable sleeve. When an axial pressure is applied to the second expanding device, the expandable sleeve engages the inside wall of the barrel. The one end of the expandable sleeve is covered with a protective plate which can only be destroyed by spark erosion when the expandable sleeve is removed from the barrel.


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