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:
Mar. 14, 1995
Filed:
Nov. 01, 1993
Mark J Whitley, Stratford, NJ (US);
Other;
Abstract
A self-centering bore arbor device is disclosed which is self-aligning when inserted into the barrel of a shotgun and to which can be mounted a bore scope in a parallax relation with the central axis of the gun barrel. The self-centering property of this device is produced by a single source of pressure transmitted by a helical spring, inside a cylindrical bore collet tube, pressing against a circular 60 degree conical wedge inside the collet tube. This conical wedge distributes this pressure equally outward to the posterior free ends of three spring leaves displaced from each other about the posterior outer circumference of the collet tube by 120 degrees. Under this pressure the free ends of these spring leaves press outward against the inner wall of the gun barrel holding the collet tube in a proper concentric alignment with the gun barrel when the tapered muzzle plug forming the front end of the bore arbor is seated firmly against the inside of the gun barrel muzzle. The adaptable self-centering feature of the bore arbor provides the facility for use with the tapering barrel bore of a shotgun.