Nov 11, 2025

US12467718 - Fast zero adjusting turret for rifle scope

The invention disclosure relates to a fast zero adjusting turret for rifle scope, comprising an turret base, an adjusting knob is movably installed on the turret base, a central tube is vertically arranged through the middle of the bottom surface of the turret base, a spline screw is arranged in the central tube, a spline dial is arranged therein, a storing tube protrudes upward from the top surface of the spline dial, a limit cam is further arranged inside the turret base, a height groove is opened on the top surface of the limit cam, a turn indicator is adhered to the top surface of the limit cam, a top reset spring is movably installed on the turn indicator. The operator can intuitively know the number of turns of rotation and improve shooting calibration time by observing the rise and fall of the turn indicator.

Assignee: MIAO OPTICS CO., LTD
Inventors: Xiaolin Miu
Filing date: 2023-07-12

The patent describes a fast zero adjusting turret for rifle scopes, featuring a turret base, a movable adjusting knob, and a central tube with a spline screw and dial to facilitate quick shooting calibration. The design includes a limit cam with a spiral height groove and a turn indicator, allowing operators to easily track adjustments through visual cues.

Claim 1

1 . A fast zero adjusting turret for rifle scope, comprising: a turret base ( 4 ) fixed on the scope, a rotatable adjusting knob ( 1 ) movably installed on the turret base ( 4 ), a central tube ( 5 ) vertically penetrating the middle of the bottom surface of the turret base ( 4 ), and a spline screw ( 6 ) that can linearly move up and down the central axis of the central tube ( 5 ); wherein a spline dial ( 7 ) that can rotate with the adjusting knob ( 1 ) is arranged therein, a storing tube ( 8 ) connected to the spline screw ( 6 ) protrudes upward from the top surface of the spline dial ( 7 ), and threads connected to the spline screw ( 6 ) are arranged on the inner peripheral wall of the central tube ( 5 ); a limit cam ( 29 ) fixed relatively to the turret base ( 4 ) and located above the spline dial ( 7 ) is further arranged inside the turret base ( 4 ), a height groove ( 22 ) is opened on the top surface of the limit cam ( 29 ), the height groove ( 22 ) is in spiral shape with multiple spiral turns, and the height of the height groove ( 22 ) with multiple spiral turns is decreased by an equal amount from inside to outside; a countersunk hole ( 30 ) opened on the limit cam ( 29 ) is connected to the bottom surface at the inner end of the height groove ( 22 ), an eccentric float is adhered to the top surface of the limit cam ( 29 ), the top end of which penetrates and extends to the top surface of the adjusting knob ( 1 ), a top reset spring ( 10 ) is movably installed on the eccentric float, on the bottom surface with eccentricity of which an eccentric rod ( 11 ) extending its bottom end to the height groove ( 22 ) and arranged in the countersunk hole ( 30 ) is vertically fixed. a turret base ( 4 ) fixed on the scope, a rotatable adjusting knob ( 1 ) movably installed on the turret base ( 4 ), a central tube ( 5 ) vertically penetrating the middle of the bottom surface of the turret base ( 4 ), and a spline screw ( 6 ) that can linearly move up and down the central axis of the central tube ( 5 ); wherein a spline dial ( 7 ) that can rotate with the adjusting knob ( 1 ) is arranged therein, a storing tube ( 8 ) connected to the spline screw ( 6 ) protrudes upward from the top surface of the spline dial ( 7 ), and threads connected to the spline screw ( 6 ) are arranged on the inner peripheral wall of the central tube ( 5 ); a limit cam ( 29 ) fixed relatively to the turret base ( 4 ) and located above the spline dial ( 7 ) is further arranged inside the turret base ( 4 ), a height groove ( 22 ) is opened on the top surface of the limit cam ( 29 ), the height groove ( 22 ) is in spiral shape with multiple spiral turns, and the height of the height groove ( 22 ) with multiple spiral turns is decreased by an equal amount from inside to outside; a countersunk hole ( 30 ) opened on the limit cam ( 29 ) is connected to the bottom surface at the inner end of the height groove ( 22 ), an eccentric float is adhered to the top surface of the limit cam ( 29 ), the top end of which penetrates and extends to the top surface of the adjusting knob ( 1 ), a top reset spring ( 10 ) is movably installed on the eccentric float, on the bottom surface with eccentricity of which an eccentric rod ( 11 ) extending its bottom end to the height groove ( 22 ) and arranged in the countersunk hole ( 30 ) is vertically fixed.

Google Patents

https://patents.google.com/patent/US12467718

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12467718