Bullet containment trap with a modular backstop

Abstract

A bullet containment trap ( 1 ) with a modular backstop ( 7 ) is disclosed. The device ( 1 ) with the modular backstop ( 7 ) comprises of at least one open ended bullet receiving chamber ( 4 ), at least one electronic target assembly (not shown) configured to project at least one target placed at a rear end of the said open-ended bullet receiving chamber ( 4 ). The bullet fired compasses the said bullet receiving chamber ( 04 ) while in contact with boundary wall and enters a terminal part of said boundary wall over a throat ( 6 ) of a passageway and moves through said throat ( 6 ) to dissipate on hitting a modular backstop ( 7 ) of a deceleration chamber ( 5 ). The said modular backstop ( 7 ) with at least two impact zones are made by stacking multiple individual armored plates ( 12 ) vertically and/or horizontally in to a plurality of cassettes ( 11 ), wherein the said cassettes and/or the individual armored plates ( 12 ) within each of the said cassettes ( 11 ) are all replaceable for deformation.

I/We claim: 
     
         1 . A bullet containment trap device ( 1 ) with a modular backstop ( 7 ), wherein the device ( 1 ) comprises of:
 at least one electronic target assembly configured to project at least one target placed at a rear end of an open-ended bullet receiving chamber;   the bullet receiving chamber ( 4 ) is supported by a plurality of supporting frames ( 2 ,  3 );   the said bullet receiving chamber ( 4 ) is backed with a bullet's deceleration chamber ( 5 ) in a horizontal axis and or in a vertical axis;   the bullet fired compasses the bullet receiving chamber ( 1 ) while in contact with a plurality of boundary walls and enters a terminal part of said boundary wall over a throat ( 6 ) of a passageway and moves through said throat ( 6 ) to dissipate on hitting a modular backstop ( 7 ) of the said deceleration chamber ( 5 );   Characterized in that   the said modular backstop ( 7 ) comprises a first impact zone ( 13 ) circumferentially oriented at a first angle from the horizontal zone of bullet travel and extends to at least one successive impact zone ( 14 );   the said modular backstop ( 7 ) with at least two impact zones are made by stacking multiple individual armored plates ( 12 ) vertically and/or horizontally in to a plurality of cassettes ( 11 );   the said cassettes ( 11 ) formed by stacking multiple individual armored plates ( 12 ) are held vertically and/or horizontally to form the said modular backstop ( 7 ), wherein the said cassettes ( 11 ) are joined with long bolts ( 8   a ) making the impinging loads of the bullet hitting the said backstop ( 7 ) distributed to multiple individual plates ( 12 ) of the said cassettes ( 11 ) closely stacked; and   the said cassettes ( 11 ) and/or the individual armored plates ( 12 ) within each of the said cassettes ( 11 ) are all replaceable for deformation.   
     
     
         2 . The device ( 1 ) as claimed in  claim 1 , wherein the said device ( 1 ) is used for de-energizing and collecting the bullet fired along a substantially horizontal path of flight. 
     
     
         3 . The device ( 1 ) as claimed in  claim 1 , wherein the said bullet that enters the said deceleration chamber ( 5 ), even at a relatively low angle will move along the chamber without being shattered or damaging the walls or the modular backstop ( 7 ). 
     
     
         4 . The device ( 1 ) as claimed in  claim 1 , wherein the spent bullet ultimately falls off the modular backstop ( 7 ), and are flushed into a passageway and then into a collecting vessel ( 10 ). 
     
     
         5 . The device ( 1 ) as claimed in  claim 1 , wherein the modular backstop ( 7 ) comprises very high flexural bending strength compared to multilayered backstops. 
     
     
         6 . The device ( 1 ) as claimed in  claim 1 , wherein the said cassettes ( 11 ) vertically held with support of long bolts ( 8 ) increases the compressive force making all the stacked plates behave like a single lumped block. 
     
     
         7 . The device ( 1 ) as claimed in  claim 1 , wherein the deformation point is not constrained to single location on the modular backstop ( 7 ) of the device, but is distributed to locations which are at considerable distance. 
     
     
         8 . The device ( 1 ) as claimed in  claim 1 , wherein the said cassettes ( 11 ) have configurable armored plates ( 12 ) and each plate has a configurable size. 
     
     
         9 . The device ( 1 ) as claimed in  claim 1 , wherein the device ( 1 ) can also be rotated to be used in horizontal position by joining number of devices to form a larger device which can be used in both indoor and outdoor shooting ranges. 
     
     
         10 . A method of replacing cassettes ( 11 ) and/or the individual armored plates ( 12 ) for deformation of the modular backstop ( 7 ) of the said bullet containment trap device ( 1 ), wherein the method comprises steps of:
 a. removing a plurality of long bolts ( 8 ) that locks a plurality of cassettes ( 11 ) formed of stacking multiple individual armored plates ( 12 ) vertically and/or horizontally ( 07 );   b. removing a back plate ( 18 ) and a plurality of side plates to get access to the said cassettes ( 11 );   c. identifying a damaged cassette ( 11 ) from the lumped block to repair and replace the damaged cassette ( 11 ) and/or the individual armored plates;   d. removing a plurality of cassette locking bolts ( 8   a ) to remove damaged armored plates ( 12 ) of the said cassettes ( 11 ); and   e. the modular backstop ( 07 ) of the said bullet containment trap device ( 1 ) allows cassettes ( 11 ) and/or the individual armored plates ( 12 ) within each of the said cassettes ( 11 ) to be easily replaced and/or repaired for deformation.