Granted Patent B2

US 12,366,424 · App. 18/202,643 · Granted Jul 22, 2025

Inventors: Andrew W. York (Portland, OR); Donald L Cramer (Hillsboro, OR); Richard Bradley Brumfield (Athens, AL); John P. Nichols (Tigard, OR); Christopher J. Boudreau (Estacada, OR); David Pierson (Tualatin, OR)

Assignee: SIG SAUER, INC.

F41A19/01F41G1/30

Abstract

Claims (23)

1. A target sight for mounting to a pistol slide of a pistol, the target sight comprising:

one or more accelerometers structured to convert an impulse force of pistol slide movement caused by firing a round of ammunition from the pistol to an impulse signal;

a timer having a time interval at least as long as a pistol slide movement time after the round of ammunition is fired; and

a counter configured to increment a round count total of the target sight only a single time during the time interval when the impulse signal exceeds a threshold.

2. The target sight of claim 1 , in which the target sight includes a user interface configured to convey the total number of rounds fired to a user.

3. The target sight of claim 1 , in which the one or more accelerometers are configured to close an electrical circuit when the firearm experiences a threshold amount of force.

4. The target sight of claim 3 , in which the one or more accelerometers comprise one or more solid state devices.

5. The target sight of claim 3 , in which the one or more accelerometers comprise one or more single-axis mechanical switches.

6. The target sight of claim 1 , in which at least one of the one or more counters is configured to be reset.

7. The target sight of claim 1 in which the time interval is greater than 55 ms.

8. The target sight of claim 7 in which the time interval is greater than 55 ms and less than 100 ms.

9. A target sight for mounting to a slide of a pistol, comprising:

a see-through optic for viewing a target; and

one or more counters, including:

one or more accelerometers configured to close an electrical circuit when the pistol slide experiences a threshold amount of force,

one or more signal filters coupled with the one or more accelerometers to create a filtered acceleration signal, and

a memory for storing a number of times the filtered acceleration signal exceeded a threshold as a round counter.

10. The target sight according to claim 9 , in which the one or more accelerometers comprise one or more solid state devices.

11. The target sight according to claim 9 , in which the one or more accelerometers comprise one or more single-axis mechanical switches.

12. The target sight according to claim 11 , further comprising a de-bouncer filter coupled to the one or more single-axis mechanical switches, the de-bouncer filter defining a time interval related to a time period of movement of the pistol slide when the pistol fires an ammunition round.

13. The target sight according to claim 9 , in which the round counter is viewable on the optic.

14. The target sight according to claim 9 , further comprising a user interface structured to accept input from a user, and in which the target sight is structured to show a display of the round counter based on inputs from the user interface.

15. The target sight according to claim 9 , in which the one or more counters include one or more indicators configured to convey to a user that a round fired has been counted.

Assignments (2)

Continuity (2)

References Cited (39)