Partially-chamberable laser boresight for small-bore firearms

Abstract

The present invention provides a partially-chamberable laser bore sight primarily for small caliber rimfire handguns and rifles of 0.17 and 0.22 caliber. The partially-chamberable laser bore sight has a chamberable generally cylindrical laser housing, which contains the laser diode and lens. A battery housing that is perpendicular to and rigidly joined to the cylindrical laser housing contains the electro-chemical cells that power the laser diode. For a preferred embodiment of the invention, the cylindrical laser housing, which is preferably made of brass, is inserted into a mold and the battery housing is injection molded around the cylindrical laser housing. An ON/OFF switch is also mounted on the battery housing. The chamberable cylindrical laser housing is inserted within the breech, or chamber, of the firearm. The battery housing, with its ON/OFF switch, protrudes from the breech opening.

What is claimed is: 
     
         1 . A partially-chamberable laser bore sight for rimfire handguns and rifles comprising:
 a chamberable, generally cylindrical laser housing containing a laser diode and at least one laser-focusing lens; and   a non-chamberable battery housing that is generally perpendicular to and rigidly joined to said generally cylindrical housing, said battery housing containing electro-chemical cells that power the laser diode;   wherein said laser diode and said at least one laser-focusing lens produce a laser beam that is concentric with a barrel of the handgun or rifle in which said generally cylindrical laser housing is chambered.   
     
     
         2 . The partially-chamberable laser bore sight of  claim 1 , wherein said generally cylindrical laser housing is made of a structural metal. 
     
     
         3 . The partially-chamberable laser bore sight of  claim 2 , wherein said structural metal is brass. 
     
     
         4 . The partially-chamberable laser bore sight of  claim 2 , wherein said structural metal is selected from the group consisting of copper, aluminum, magnesium, zinc, tin and alloys thereof. 
     
     
         5 . The partially-chamberable laser bore sight of  claim 2 , wherein said battery housing is made of polymer resin and is fused to said laser housing. 
     
     
         6 . The partially-chamberable laser bore sight of  claim 1 , wherein said battery housing incorporates an ON-OFF switch. 
     
     
         7 . The partially-chamberable laser bore sight of  claim 1 , wherein said battery housing incorporates a removable cover that facilitates installation and replacement of electro-chemical cells within said battery housing. 
     
     
         8 . The partially chamberable laser bore sight of  claim 1 , wherein said chamberable, generally cylindrical laser housing is sized for handguns and rifles having a bore of at least 0.17 caliber and no greater than 0.22 caliber. 
     
     
         9 . A laser bore sight for handguns and rifles comprising:
 a chamberable, generally cylindrical laser housing containing a laser diode and at least one laser-focusing lens;   a non-chamberable battery housing that is generally perpendicular to and rigidly joined to said generally cylindrical housing, said battery housing containing electro-chemical cells that power the laser diode.   
     
     
         10 . The partially-chamberable laser bore sight of  claim 9 , wherein said generally cylindrical laser housing is made of a structural metal. 
     
     
         11 . The partially-chamberable laser bore sight of  claim 10 , wherein said structural metal is brass. 
     
     
         12 . The partially-chamberable laser bore sight of  claim 10 , wherein said structural metal is selected from the group consisting of copper, aluminum, magnesium, zinc, tin and alloys thereof. 
     
     
         13 . The partially-chamberable laser bore sight of  claim 10 , wherein said battery housing is made of polymer resin and is fused to said laser housing. 
     
     
         14 . The partially-chamberable laser bore sight of  claim 9 , wherein said battery housing incorporates an ON-OFF switch. 
     
     
         15 . The partially-chamberable laser bore sight of  claim 9 , wherein said battery housing incorporates a removable cover that facilitates installation and replacement of electro-chemical cells within said battery housing. 
     
     
         16 . The partially chamberable laser bore sight of  claim 9 , wherein said chamberable, generally cylindrical laser housing is sized for handguns and rifles having a bore of at least 0.17 caliber and no greater than 0.22 caliber. 
     
     
         17 . A laser bore sight for handguns and rifles comprising:
 a chamberable, generally cylindrical, brass laser housing containing a laser diode and at least one laser-focusing lens;   a non-chamberable battery housing that is generally perpendicular to and rigidly joined to said generally cylindrical housing, said battery housing containing electro-chemical cells that power the laser diode.   
     
     
         18 . The partially-chamberable laser bore sight of  claim 17 , wherein said battery housing is made of polymer resin and is fused to said laser housing. 
     
     
         19 . The partially-chamberable laser bore sight of  claim 17 , wherein said battery housing incorporates an ON-OFF switch. 
     
     
         20 . The partially-chamberable laser bore sight of  claim 17 , wherein said battery housing incorporates a removable cover that facilitates installation and replacement of electro-chemical cells within said battery housing.