Electronic ammunition counter

• US 5,406,730 A
• Filed: 07/29/1994
• Issued: 04/18/1995
• Est. Priority Date: 07/29/1994
• Status: Expired due to Fees

• Current Assignee: Cotter W. Sayre
• Original Assignee: Cotter W. Sayre
• Inventors: Sayre, Cotter W.
• Primary Examiner(s): Brown, David
• Application Number:
  US08/282,815
• Time in Patent Office: 263 Days
• Field of Search: 42/1.02, 42/1.03, 42/70.01, 42/70.11, 42/84
• US Class Current: 42/1.02
• CPC Class Codes: F41A 19/01 Counting means indicating the number of shots fired
• CPC Class Codes: F41A 9/62 having means for indicating the number of cartridges left in the magazine, e.g. last-round indicators last-round safeties F41A17/40

Abstract

A method and apparatus for counting the rounds expended from a firearm. When a non sound-suppressed firearm is discharged, two things occur: A strong sound wave is produced due to the quick expansion of the gases produced by the ignition of the powder in the case; and a rearward motion of the firearm occurs, usually referred to as recoil, due to the projectile moving in the forward direction, as Newton'"'"'s law states. The integration of both recoil and sound transducers guarantees that in order for the device to increment or decrement both the recoil and the gunshot must occur in the same time frame, thus guaranteeing an accurate count with an easy to install and compact device comprised of an acoustic and dynamic switch, whose outputs are fed into the input of a NAND gate, with the output of the NAND gate fed into a digital counter, then fed into a decoder/driver for output into the output display. The device is able to be reset just before or just after reloading of the firearm by the push of a button.

Claims

1. An ammunition counting device comprising an acoustic sensing transducer and a recoil sensing transducer electrically connected to the inputs of a logic gate, with the output of said logic gate connected to an electronic counting means, with the output of said electronic counting means connected to a display means, whereby the user is capable of quickly and reliably viewing the amount of rounds fired from any firearm.