Rotary lug breeches and weapons including such rotary lug breeches

US8677883B2 · kind B2 · utility

Assignee

• HECKLER & KOCH GmbH · DE

Inventors

• Ernst Wössner · Sulz, DE
• Stefan Doll · Obermoschel, DE
• Martin Stussak · Obermoschel, DE

Key dates

• Filing date: Aug 24, 2012
• Grant date: Mar 25, 2014
• Expiry date: Aug 24, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F41A3/26
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Rotary lug breeches and weapons including such rotary lug breeches are disclosed. An example rotary lug breech includes a bolt carrier. Wherein when releasing the bolt, a cam section of a receiver converts a releasing motion into a screwing motion to release a cartridge. During the screwing motion, a first stud surface interacts with the cam section. During a locking process, the first stud surface engages the cam section to perform a pre-control process that rotates a control pin in a slot from a releasing position in which an advancement of the bolt carrier exerts substantially no torque on the bolt, to a control position in which a first slot surface of the slot interacts with the control pin. When the bolt carrier moves forward, the bolt carrier exerts a torque on the bolt to enable the bolt and the bolt carrier move relative to one another.