Recoil brake with hydropneumatic recuperator and forward movement damping

US4485722A · kind A · utility

Assignee

• Rheinmetall GmbH · DE

Inventors

• Josef Metz · Neuss, DE
• Gert Winkler · Meerbusch, DE

Key dates

• Filing date: Apr 20, 1981
• Grant date: Dec 4, 1984
• Expiry date: Apr 20, 2001

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F41A25/20
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A combination recuperator and gun barrel recoil brake form a single constructional unit assembly. This assembly includes a storage cylinder in which a recoil (brake) cylinder is mounted by means of a separating piston which forms part of the recoil cylinder and which is slidably disposed in the storage cylinder. A recoil piston is slidably disposed in the recoil cylinder and is operatively connected via a piston rod to the gun barrel. A guide bushing is mounted in the rear end wall of the storage cylinder and forms an axial guide for the piston rod of the recoil piston. The outer surface of the guide bushing forms together with the inner wall surface of the recoil cylinder and the internal bore of the separating piston a first passage for permitting a controlled flow of the pressurized liquid between the pressurized liquid chamber in the storage cylinder and the interior of the recoil cylinder. The outer contour of the guide bushing, the inner contours of the recoil cylinder and internal bore of the separating piston are so constructed and arranged that the pressurized liquid is acting on the recoil piston during recoil to firstly, until shortly after the projectile has exited from…