Non-telescoping riflescope adjustment mechanism

A non-telescoping adjustment mechanism for a sighting dice, the sighting device including a housing having an interior and an exterior, and further including an adjustable member positioned within the interior of the housing, the non-telescoping adjustment mechanism comprising:

• a core operatively associated with the adjustable member and supported on the housing for rotation about an axis of rotation, the core being mounted such that, when rotated, the core remains stationary along the axis of rotation relative to the housing;
• an adjustment knob coupled to the core for rotation therewith and extending from the housing a protrusion distance, the adjustment knob prevented from moving along the axis of rotation relative to the housing;
• an index slide slidably supported on the adjustment mechanism for movement along a slide path extending along the axis of rotation between the adjustment knob and the core, the index slide threadably coupled to the adjustment knob for movement of the index slide along the slide path in response to rotation of the adjustment knob;
• a scale including a set of indicia arranged on the adjustment mechanism;
• and
• a datum located on the adjustment mechanism, the datum and the scale moving relative to each other in response to the movement of the index slide along the slide path and cooperating to thereby indicate to a user of the riflescope the amount of adjustment of the adjustment mechanism through multiple turns of the adjustment knob without increasing the protrusion distance.

A riflescope comprising:

• an outer tube adapted to be mounted onto a firearm;
• an inner tube positioned within the outer tube and having a first end and a second end, the first end pivotally mounted within the outer tube and the second end being displaceable;
• and
• an adjustment mechanism including:
• a core having an axis of rotation and a set of drive threads centered on the axis of rotation, the core rotatably mounted to the outer tube such that, when rotated, the core remains stationary along the axis of rotation relative to the outer tube;
• an adjustment plunger threadably coupled to the set of drive threads of the core and extending within the outer tube to operatively engage the second end of the inner tube, rotation of the core about the axis of rotation causing the adjustment plunger to move along the axis of rotation and to displace the inner tube;
• an adjustment knob rigidly coupled to the core for rotation therewith, the adjustment knob restricted from moving along the axis of rotation relative to the housing;
• an index slide having a set of indicator threads centered on the axis of rotation, the index slide keyed to prevent rotation of the index slide about the axis of rotation, and the index slide threadably coupled to the adjustment knob such that rotation of the adjustment knob causes the index slide to move along the axis of rotation;
• a scale including a set of indicia arranged on the adjustment mechanism;
• and
• a datum located on the adjustment mechanism, the datum and the scale moving relative to each other in response to the movement of the index slide along the slide path and cooperating to thereby indicate to a user of the riflescope the amount of adjustment of the adjustment mechanism through multiple turns of the adjustment knob.