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:
Jan. 09, 2001
Filed:
Jul. 02, 1998
Rheinmetall W & M GmbH, Unterluss, DE;
Abstract
A rifled weapon tube (,), from which spin-stabilized projectiles (,) with driving bands (,) are fired. In order to reduce manifestations of wear on a driving band (,), it is known to stabilize a spin angle (&dgr;) occurring during the firing or to cut deeper rifling grooves (,) into an inside wall (,) of the weapon tube (,). Both options can be realized only within limits as the compatibility between weapon tube (,) and projectile (,) must be ensured. The invention provides for another option of reducing the wear on the driving band (,). Increasing the number of rifling grooves (,) on the tube inside wall (,) reduces the frictional stress that occurs on the driving band (,). This new type of design for the rifling groove flanks (,), formed between a groove bottom (,) of rifling groove (,) and a lands (,) between the rifling grooves (,), reduces the total wear volume on the driving band (,). In this case, the rifling flanks (,) extend nearly perpendicular to the rifling groove bottom (,).