Rifle scope turret with spiral cam mechanism

摘要

Rifle scope turrets with spiral cam mechanisms include a scope body, a movable optical element defining an optical axis enclosed by the scope body, and a turret having a screw operably connected to the optical element for adjusting the optical axis in response to rotation of the screw. The turret has a spiral cam mechanism engaged thereto. The turret defines first and second stop surfaces positioned for engagement by the spiral cam to limit rotation of the turret. The first stop surface defines a zero position of the screw and the movable optical element. The second stop surface defines a maximum point of displacement of the screw and the moveable optical element. The stop surfaces may be defined by a spiral cam groove in the indexing portion of the turret. The groove may overlap itself at least partially. The turret may be an elevation turret or a windage turret.

主权项

1. A rifle scope comprising:
a scope body; a movable optical element defining an optical axis connected to the scope body; a turret having a screw defining a screw axis and operably connected to the optical element for adjusting the optical axis in response to rotation of the screw; a stop element connected to the screw; the stop element defining a guide surface wrapping about the screw axis and terminating at first and second ends; a cam follower element connected to the scope body and operable to engage the guide surface, and to engage the first and second ends, the engagement of the first and second ends defining rotational limits of the turret; wherein each of the first and second ends are at different radial distances from the screw axis; and a rotation indicator connected to the stop element, wherein the rotation indicator moves outwards from the turret each time the turret is rotated between the first and second ends of the guide surface.