Gas and manual operation assembly for semi-automatic firearms

• US 3,330,183 A
• Filed: 10/26/1965
• Issued: 07/11/1967
• Est. Priority Date: 10/29/1964
• Status: Expired due to Term

• Current Assignee: Theodor Loffler
• Original Assignee: Theodor Loffler
• Inventors: THEODOR LOFFLER
• Application Number:
  US04/505,264
• Time in Patent Office: 623 Days
• US Class Current: 89/193
• CPC Class Codes: F41A 3/72 Operating handles or levers; Mounting thereof in breech-blocks or bolts F41C7/02, F41C7/06 take precedence
• CPC Class Codes: F41A 5/18 gas-operated
• CPC Class Codes: F41A 5/26 Arrangements or systems for bleeding the gas from the barrel F41A5/20 - F41A5/24 take precedence
• CPC Class Codes: F41A 5/28 Adjustable systems

Claims

1. IN A SEMI- AUTOMATIC FIREARM HAVING A BARREL, A CASING AND A BREECH MECHANISM, A GAS AND MANUAL ACTUATION ASSEMBLY FOR EFFECTING MOVEMENT LONGITUDINALLY OF THE BARREL COMPRISING A GAS CYLINDER WITHIN THE CASING, GAS CONDUIT MEANS OPERATIVELY CONNECTING SAID GAS CYLINDER AND THE BARREL FOR ADMITTING PROJECTILE PROPELLANT GAS INTO SAID GAS CYLINDER UPON FIRING OF THE FIREARM, FORCE TRANSMITTING MEANS WITHIN THE CASING AND GUIDED THEREBY FOR MOVEMENT LONGITUDINALLY OF THE BARREL AND BEING OPERATIVELY CONNECTED TO THE BREECH MECHANISM FOR TRANSMITTING FORCE THERETO, SAID FORCE TRANSMITTING MEANS INCLUDING A REDUCED DIAMETER GAS PISTON PORTION AT THE FORWARD EXTREMITY THEREOF AND ENTERING INTO SAID GAS CYLINDER FOR RECIPROCATION THEREWITHIN, AND MANUAL ACTUATION MEANS