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:
Jan. 13, 2015
Filed:
Jan. 17, 2011
Juha Aalto, Riihimaki, FI;
Juha Aalto, Riihimaki, FI;
Sako Oy, Riihimaki, FI;
Abstract
A firearm which is modifiable by the user such that a firearm barrel is arranged replaceable by the user, wherein the firearm comprises a barrel unit, which is detachable by the user and fastenable to a receiver, which barrel unit comprises the barrel and a locking piece, wherein the locking piece has a backward narrowing rear cone, which fits a cone in the receiver and which has a forward narrowing front cone, and which fits a cone in the centering bush, wherein to the centering bush is rotatably connected a clamping bush having an outer thread which fits an inner thread in the receiver, wherein by rotating the clamping bush in the locked direction, the rear end of the locking piece is centerable by means of the rear cone and lockable to the cone in the receiver.