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:
Jun. 14, 1988
Filed:
Jan. 05, 1987
Ellsworth D Townsend, Wausaukee, WI (US);
Gerald L Townsend, Wausaukee, WI (US);
Other;
Abstract
A device for sighting-in firearms is disclosed. The device comprises a telescope connected to a mandrel. The mandrel is sized to fit within a variety of calibers of gun bores. The mandrel has a tapered sleeve with a conical shape which centers the outside end of the sleeve in the outside end of the firearm bore. The inside end of the sleeve has a circumferentially expandable structure which allows the sleeve to be secured in the center of the bore when flared by the head of a slideable mandrel core. The telescope is connected to the mandrel with an optical arrangement through which the line of sight of the telescope is observable. The mandrel is constructed so that when the device is inserted in the bore of a firearm, the line of sight of the telescope is centered with and parallel to the axis of the mandrel, which is also the axis of the firearm bore.