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:
Nov. 29, 2016
Filed:
Oct. 28, 2015
Sturm, Ruger & Company, Inc., Southport, CT (US);
Jonathan Philip Mather, Grafton, NH (US);
David B. Kangas, Claremont, NH (US);
Abstract
A firearm with tubular handguard mounting system is provided. The firearm includes receiver, a barrel having a breech threadably engaging the receiver, and a handguard. A primary barrel nut threadably engages the breech end of the barrel and is moveable into abutting contact with the receiver to form a tightened barrel to receiver connection. A secondary barrel nut threadably engages the primary barrel nut and is tightened thereto to trap an external annular barrel flange between the primary barrel nut and an annular abutment surface on the secondary barrel nut. The secondary barrel nut provides a free float tubular handguard, such as an AR-15 type handguard. Additionally, the primary barrel nut and secondary barrel nut provide a dual locking feature which resists loosening of the barrel connection.