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:
Feb. 26, 2013
Filed:
Mar. 28, 2012
Douglas Swingley, Santa Clarita, CA (US);
Robert Wayne Spears, Ketchikan, KS (US);
Scott Miller, Lake View Terrace, CA (US);
Mehroujan Shirvanian, Glendale, CA (US);
Douglas Swingley, Santa Clarita, CA (US);
Robert Wayne Spears, Ketchikan, KS (US);
Scott Miller, Lake View Terrace, CA (US);
Mehroujan Shirvanian, Glendale, CA (US);
Spears Manufacturing Co., Sylmar, CA (US);
Abstract
A cartridge casing for rifles is made from a high strength aluminum alloy. A method for making such cartridge casing includes the steps of (a) forming a cylindrical blank from an aluminum alloy having a tensile strength greater than 80,000 psi, and (b) rotating the blank at a rate greater than 500 rpm and forcing the blank into a die, the die having a bore with progressively reduced interior diameters which are less than the external diameter of the blank. In the method, the forcing of the blank into the die results in the finished cartridge casing having a distal end with an external diameter which is less than the external diameter of its proximal end.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile