US 12,169,106 B2
Hybrid carbon-steel firearm barrel
Tod D. Boretto, Poway, CA (US); Daniel J. Hanus, Buford, GA (US); Brady E. Sandercock, Duluth, GA (US); and Ion Racionero, Arrasate (ES)
Assigned to Blackpowder Products, Inc., Lawrenceville, GA (US)
Filed by BLACKPOWDER PRODUCTS, INC., Lawrenceville, GA (US)
Filed on Jul. 20, 2023, as Appl. No. 18/355,711.
Application 18/355,711 is a continuation of application No. 17/845,167, filed on Jun. 21, 2022, granted, now 11,732,988.
Application 17/845,167 is a continuation of application No. 17/666,830, filed on Feb. 8, 2022, granted, now 11,385,013, issued on Jul. 12, 2022.
Application 17/845,167 is a continuation of application No. 17/165,721, filed on Feb. 2, 2021.
Application 17/666,830 is a continuation in part of application No. 15/639,654, filed on Jun. 30, 2017, granted, now 10,907,942, issued on Feb. 2, 2021.
Claims priority of provisional application 63/305,797, filed on Feb. 2, 2022.
Claims priority of provisional application 63/215,753, filed on Jun. 28, 2021.
Claims priority of provisional application 63/150,212, filed on Feb. 17, 2021.
Claims priority of provisional application 63/086,017, filed on Sep. 30, 2020.
Claims priority of provisional application 62/374,508, filed on Aug. 12, 2016.
Claims priority of provisional application 62/357,778, filed on Jul. 1, 2016.
Prior Publication US 2024/0133649 A1, Apr. 25, 2024
Prior Publication US 2024/0230264 A9, Jul. 11, 2024
Int. Cl. F41A 21/04 (2006.01)
CPC F41A 21/04 (2013.01) 23 Claims
OG exemplary drawing
 
1. A firearm comprising a hybrid composite/steel barrel, the barrel further comprising:
a metal inner barrel liner; and
a composite outer barrel sleeve, the composite outer barrel sleeve comprising carbon fibers;
wherein the metal inner barrel liner has an external taper from a larger breech end dimension to a smaller muzzle end dimension, and wherein the composite outer barrel sleeve has an internal taper configured to generally match the external taper of the inner barrel liner and fit in close engagement therewith when assembled, and wherein the composite outer barrel sleeve is adhesively bonded to the metal inner barrel liner; and
wherein the metal inner barrel liner comprises a first thread profile at a muzzle end thereof, and wherein the barrel further comprises a tensioning nut having a second thread profile configured for cooperative engagement with the first thread profile, to engage the composite outer barrel sleeve onto the inner barrel liner.