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:
Aug. 24, 2004
Filed:
Feb. 04, 2003
Ulf Hellman, Karlskoga, SE;
Bofors Defence AB, , SE;
Abstract
The present invention relates to a long-range artillery shell ( ) that is fin-stabilised in its trajectory and which is designed to be fired in a rifled gun barrel and thus has a slipping driving band ( ) as main contact surface with the inside of the barrel, and has a so-called base-bleed unit ( ) with a number of stabilization fins ( ) that are deployable after the shell has left the barrel. A special feature of the shell ( ) as claimed in the present invention is that the fins ( ), when activated, are radially displaceable to project outside the external periphery of the shell through slots or through-holes ( ) in the wall of the shell, but are initially radially retracted inside the propellant motor section or propellant chamber ( ) of the base-bleed unit ( ) between dedicated protective walls ( ) that isolate the fins from the surrounding propelling charges ( ) of the propellant motor and also divide the inside of the propellant motor ( ) into sectors ( ) that are separated from each other.