Clamping Apparatus for Firearm Rail Mount

Abstract

A mounting component for engagement of a scope or other component to a firearm mounting rail. A base of the mounting component features first and second translating halves which can be drawn toward each other by rotation of a lever operating a cam to translate a cross member communicating between the two halves of the base. An adjustment is provided to change the length of the cross member extension between the base halves to allow adjustment of the compressive force caused by lever rotation.

1 . A mounting apparatus for engagement of a firearm component to a firearm mounting rail having a narrow base and two parallel opposing edges projecting over the base, comprising:
 a base, said base having a first body half and a second body half;   said base having means to engage to said firearm component;   at least one cross member engaged at a first end with said first body half and at a second end with a cam center;   a gap formed between said first body half and second body half;   a lever engaged to said second body half, said lever rotatable from a first position to a second position;   said lever rotating from said first position to said second position contacting said cam center and causing a translation of said first end of said cross member toward said second body half; and   said translation narrowing said gap and providing means to exert a compressive frictional engagement of said base to said rail, thereby holding said base in a mounted position.   
     
     
         2 . The apparatus of  claim 1  additionally comprising:
 said second end of said cross member configured for translation into an aperture in said cam center; 
 said translation providing means to adjust a diameter of said gap; and 
 adjusting said diameter providing means to adjust a force of said compressive frictional engagement to said rail. 
 
     
     
         3 . The apparatus of  claim 1  additionally comprising:
 means to prevent said lever in said second position from rotating toward said first position thereby placing said lever in a locked position; and 
 a release, said release activatable to allow rotation of said lever toward said first position from said second position. 
 
     
     
         4 . The apparatus of  claim 2  additionally comprising:
 means to prevent said lever in said second position from rotating toward said first position thereby placing said lever in a locked position; and 
 a release, said release activatable to allow rotation of said lever toward said first position from said second position. 
 
     
     
         5 . The apparatus of  claim 1  additionally comprising:
 said first body portion having a first projecting edge; 
 said second body portion having a second projecting edge positioned across said gap opposite said first projecting edge; and 
 said first projecting edge and said second projecting edge engaging said rail under said two parallel opposing edges projecting over the base when said base is in said mounted position. 
 
     
     
         6 . The apparatus of  claim 2  additionally comprising:
 said first body portion having a first projecting edge; 
 said second body portion having a second projecting edge positioned across said gap opposite said first projecting edge; and 
 said first projecting edge and said second projecting edge engaging said rail under said two parallel opposing edges projecting over the base when said base is in said mounted position. 
 
     
     
         7 . The apparatus of  claim 3  additionally comprising:
 said first body portion having a first projecting edge; 
 said second body portion having a second projecting edge positioned across said gap opposite said first projecting edge; and 
 said first projecting edge and said second projecting edge engaging said rail under said two parallel opposing edges projecting over the base when said base is in said mounted position. 
 
     
     
         8 . The apparatus of  claim 4  additionally comprising:
 said first body portion having a first projecting edge; 
 said second body portion having a second projecting edge positioned across said gap opposite said first projecting edge; and 
 said first projecting edge and said second projecting edge engaging said rail under said two parallel opposing edges projecting over the base when said base is in said mounted position.