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.

Date of Patent:
Jan. 24, 2023

Filed:

Dec. 13, 2019
Applicant:

The United States of America, As Represented BY the Secretary of the Navy, Crane, IN (US);

Inventor:

Lucas Allison, Bloomington, IN (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F42B 12/62 (2006.01); F42B 12/58 (2006.01); F42B 12/32 (2006.01); F42C 9/10 (2006.01); F42C 19/08 (2006.01);
U.S. Cl.
CPC ...
F42B 12/62 (2013.01); F42B 12/32 (2013.01); F42B 12/58 (2013.01); F42C 9/10 (2013.01); F42C 19/0838 (2013.01);
Abstract

The present invention relates to a firearm projectile capable of releasing a secondary payload mid-flight through a pyrotechnic timing mechanism. Once the firearm is fired, the powder in the casing pushes out the projectile as a typical round. In addition, the powder ignites the delay column. The formulation and amount of delay pyrotechnics determines the delay time. When the delay column is burned, the final portion ignites an expelling charge. The expelling charge builds pressure in the projectile casing and separates the base plug from the main projectile housing. The expelling assembly pushes out the secondary payload out the rear of the projectile. Although the payload exits the rear of the projectile at minimum velocity, the net velocity of the payload is still in the forward direction.


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