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:
Dec. 01, 1987
Filed:
Jan. 30, 1985
Rolf Bartolles, Korschenbroich, DE;
Rheinmetall GmbH, Duesseldorf, DE;
Abstract
An obturator ring for location between a sliding wedge-type breech block and a base ring in the barrel of a cannon to provide a seal and allow satisfactory closing movement of the obturator ring. The ring comprises an angle section with a radial flank having a disc lining on the external side facing the breech, the flank which is parallel to the axis of the bore of the barrel having on the external side a cylindrical lining. The linings are deformable, incompressible and capable of being forced over their widths against the base ring or the wedge insert by the flanks which deform under gas pressure. The linings are interconnected in the corner cross section of the obturator ring via a number of connecting rod-like members disposed in bores through the obturator ring; the flanks are joined through a rounded corner portion which allows flexure to effect through the tips of the flanks. The linings provide a large sealing surface of which the minimum width is greater than one-half of the length.