Patent ID: 8448374
Filing Date: 2013-05-28
Classification: F41G

Abstract:
1. An adjustable base assembly for an electronic optic to be mounted on a firearm, comprising: a base attachable to a firearm; an adjustable bridge having a bore formed on a bottom portion, a front end pivotally mounted to said base thereby allowing a rear end with a rearwardly directed indexing hook to move up and down, said rear end being biased upwardly by a spring, the spring having an upper portion that is received within said bore and a lower portion supported on said base so that said spring is positioned between said bridge rear end and said base; an optic mounting platform mounted to or integral with said bridge and configured to secure an electronic optic and prevent movement thereof relative to said platform; and an adjustment cam assembly mounted to said base and having an elevation cam operatively coupled to said rearwardly directed indexing hook on the rear end of said bridge, said adjustment cam assembly including an element manipulated by a user rotatable in both clockwise and counter-clockwise directions to adjust an angle of said bridge to change an elevation of said optic mounted on said optic mounting platform, movement in a first of said directions causing said elevation cam to increase downward pressure on said rear end indexing hook to compress the spring and lower the rear end of the bridge, movement of the element in a second opposite direction decreasing the pressure applied by the elevation cam to allow the rear end to move upwardly by the biasing force of the spring, wherein said element manipulated by the user is a knob.