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:
Jun. 03, 2003
Filed:
Mar. 11, 2002
Stephen E. Bennett, Tucson, AZ (US);
Chris E. Geswender, Tucson, AZ (US);
Kevin R. Greenwood, Tucson, AZ (US);
Raytheon Company, Lexington, MA (US);
Abstract
A projectile ( ) with extensible fins ( ) is designed to be lightweight by removing material unnecessary to structural strength and filling the resulting voids with a non-metallic filler material ( ). Although particularly suited where the extensible fins ( ) are mounted behind the obturator ( ) and that are therefore subjected to turbulent, destructive shock waves when the projectile is accelerated down the gun barrel, the method and apparatus can be used elsewhere as well. The filler material ( ) may be high temperature grease, an epoxy, a silicone or other similar materials. The filler material ( ) may be designed to fall away as soon as the projectile ( ) exits the gun barrel, or it may be permanently adhered to the material of the projectile. The filler may be surrounded by a frangible boot ( ′) to protect the filler during storage, shipment and loading into the gun.