US 12,138,727 B2
Jig for firearm lower receiver manufacture
Tilden Alan Smith, Westminster, CA (US)
Assigned to BlackHawk Manufacturing Group Inc., Fort Worth, TX (US)
Filed by BlackHawk Manufacturing Group Inc., Garden Grove, CA (US)
Filed on Mar. 8, 2023, as Appl. No. 18/180,586.
Application 18/180,586 is a continuation of application No. 17/131,476, filed on Dec. 22, 2020, granted, now 11,623,313.
Application 17/131,476 is a continuation of application No. 16/116,266, filed on Aug. 29, 2018, granted, now 10,875,135, issued on Dec. 29, 2020.
Application 16/116,266 is a continuation of application No. 15/954,935, filed on Apr. 17, 2018, granted, now 10,099,329, issued on Oct. 16, 2018.
Claims priority of provisional application 62/486,898, filed on Apr. 18, 2017.
Prior Publication US 2023/0294226 A1, Sep. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B23P 19/00 (2006.01); B23B 47/28 (2006.01); B23B 49/02 (2006.01); B23C 9/00 (2006.01); B23Q 3/06 (2006.01); B23B 51/00 (2006.01); B23C 3/00 (2006.01)
CPC B23Q 3/062 (2013.01) [B23B 47/28 (2013.01); B23B 49/023 (2013.01); B23C 9/00 (2013.01); B23B 51/0054 (2013.01); B23B 2215/28 (2013.01); B23B 2247/12 (2013.01); B23C 3/00 (2013.01); B23C 2255/00 (2013.01); B23Q 2703/10 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A jig assembly for machining portions of a blank of an unfinished firearm lower receiver, the blank having a buffer tube and a rear takedown aperture, the jig assembly comprising:
a template plate having a machining aperture and a pin aperture, the pin aperture configured to couple the blank with the template plate by the rear takedown aperture;
a centering mechanism configured to removably attach to the template plate and laterally center the template plate relative to the blank, the centering mechanism including an opening configured to align with a laterally centered void on the blank; and
at least one side plate extending from the template plate, the at least one side plate configured to support the template plate and the blank on a surface and including alignment features.