In departure firing several counters

摘要

PROBLEM TO BE SOLVED: To provide a number of fired bullet counting device capable of accurately counting and displaying the number of fired bullet by utilizing firing gas pressure of bullet, and being easily mounted on and demounted from an existing rifle.;SOLUTION: This number of fired bullet counting device 7 is screwed in a adjustment element loading hole 6b of a gas cylinder 6 at a tip of a rifle barrel 3 by a lock nut 13 mounted on a detecting part 10. A firing gas introducing passage 14 communicating a gas introduction chamber 15 opened to a cylinder 5 and a gas leakage hole 4 of the rifle barrel 3, is formed on the detecting part 10. Further a distortion sensor 17 is mounted. When the bullet 27 is fired off, the distortion sensor 17 detects the distortion of the detecting part 10 on the basis of the firing gas introduced into the gas introduction chamber 15 and outputs a signal to a processing means 9 of a casing 8. The processing means 9 performs the counting on the basis of the signal, and displays the number of fired bullets by a display means 21.;COPYRIGHT: (C)2005,JPO&NCIPI