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:
Mar. 01, 2022
Filed:
Jun. 30, 2020
Shell Shock Technologies Llc, Westport, CT (US);
Anthony Viggiano, Groton, CT (US);
Volodymyr Drobockyi, Hebron, CT (US);
SHELL SHOCK TECHNOLOGIES LLC, Westport, CT (US);
Abstract
A casing for use in a cartridge for a firearm comprises a sleeve portion and a base portion, where the base has cannelure comprised of curving surfaces. In a casing embodiment, a sleeve has cylindrical portion with a mouth for holding a bullet and an opposing end radially-running bulkhead. A nipple extends from the bulkhead and into a passageway of the base, thereby securing the sleeve to the base. The sleeve bulkhead preferably has at least one circumferential wave and contacts a distal end surface of the base, which may be planar or conical. The cannelure is characterized by a continuously curving groove bottom, a maximum groove depth diameter that is 60 to 80 percent of the base outside diameter, and a volume that is 20 to 43 percent of the volume of a like base which has no cannelure.