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:
Jul. 24, 1979
Filed:
Nov. 15, 1977
Hisao Hayashi, Tokyo, JP;
Abstract
A breechblock assembly and operating mechanism for a gas operating automatic loading fire-arm has a breechblock slider adapted to be retracted by utilization of a gas pressure at the firing of the shotshell, a link is pivoted at the rear end of the slider so as to be swingable up and down and provided with swinging-movement limiting means, a breechblock is adapted to be locked so as to tightly close the breech face of the barrel and is mounted on the breechblock slider so as to be forwardly movable for a predetermined length, and a propelling force recoil spring mechanism engages the rear end of the link and is located in the stock of the gun for energizing the link to guide the tilting backward movement thereof, and the actuating mechanism is so constructed that it releases the limitation of the swinging-movement of the link when the breechblock slider and the breechblock are relatively moved by a predetermined length from their initial positions.