M4A1 Helically fluted gun barrel

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Description

FIG. 1 is a muzzle end isometric view of the M4A1 helically fluted gun barrel.

FIG. 2 is a plan view of the M4A1 helically fluted gun barrel (top and front are identical to this plan view, whereas bottom and back are a mirror image of this plan view); and,

FIG. 3 is a right side elevation view (muzzle end) of the M4A1 helically fluted gun barrel.

Views are orthogonal projections unless otherwise noted. The various views are not necessarily to scale in order to better illustrate the design.

Claims

The ornamental design for a M4A1 helically fluted gun barrel, as shown and described.

Referenced Cited
U.S. Patent Documents
D559923 January 15, 2008 Broersma
D593631 June 2, 2009 Salva
D666269 August 28, 2012 Heath
8307575 November 13, 2012 Battaglia
D693422 November 12, 2013 Vera
D697995 January 21, 2014 Kera
D748218 January 26, 2016 Kera
10001337 June 19, 2018 Curliss
D829843 October 2, 2018 Oglesby
D829845 October 2, 2018 Oglesby
D842415 March 5, 2019 Oglesby
10401110 September 3, 2019 Aldophsen
20170038172 February 9, 2017 Palu
Other references
  • “F-1 Firearms 16″ .223 Wylde 416SS Barrel—Black Nitride” [online]. f-1firearms.com. [Retrieved on Dec. 30, 2019]. Retrieved from the Internet: <https://f-1firearms.com/f-1-firearms-16-223-wylde-416ss-barrel-black-nitride/>.
  • “EMG / F1 Firearms CNC Aluminum Airsoft AEG Outer Barrel (Model: Spiral Fluted / Nickel)” [online]. evike.com. [Retrieved on Dec. 30, 2019]. Retrieved from the Internet: <https://www.evike.com/products/89449/>.
Patent History
Patent number: D889583
Type: Grant
Filed: Dec 7, 2018
Date of Patent: Jul 7, 2020
Assignee: The United States of America as Represented by the Secretary of the Army (Washington, DC)
Inventors: Thomas C. Grego (Chester, NJ), Adam Foltz (Long Valley, NJ)
Primary Examiner: Khawaja Anwar
Assistant Examiner: Mojtaba Tehrani
Application Number: 29/672,642
Classifications
Current U.S. Class: Firearm Element Or Attachment (D22/108)