Blast protected unit and system

Abstract

A blast protected unit ( 100 ) for blast protection comprises: a protecting panel ( 14 ) having a first side ( 7 ) and a second side ( 8 ); a sub-frame ( 16 ) adapted to circumscribe said protecting panel ( 14 ); and a plurality of energy absorption units ( 30 ). The absorption units ( 30 ) are adapted to connect the sub-frame ( 16 ) to the protecting panel ( 14 ). Each of the energy absorption units ( 30 ) is connectable to the protecting panel ( 14 ) and the sub-frame ( 16 ), such that the aforementioned blast protected unit ( 100 ) is formed. The energy absorption units ( 30 ) are configured to deform under a blast force applied against the first side ( 7 ) of the protecting panel ( 14 ), allowing the protecting panel ( 14 ) to move away from and remain in proximity to the sub-frame ( 16 ). The blast protected unit ( 100 ) is adapted to be connected to a building structure, such that a protection from blasts is provided to the internal portion of said building structure, the internal portion being located at the second side ( 8 ) of the protecting panel ( 14 ).

1 .- 177 . (canceled) 
     
     
         178 . A blast protected unit for blast protection, said blast protected unit comprising:
 a. a protecting panel having a first side and a second side;   b. a sub-frame adapted to circumscribe said protecting panel; and   c. a plurality of energy absorption units adapted to connect said sub-frame to said protecting panel, each of said energy absorption units having a first end and a second end, said first end of each of said energy absorption units being connectable to said protecting panel, and said second end of each of said energy absorption units being connectable to said sub-frame, such that said blast protected unit is formed; said energy absorption units are configured to deform under a blast force applied against said first side of said protecting panel, allowing said protecting panel to move away from and remain in proximity to said sub-frame;   
       said blast protected unit is adapted to be connected to a building structure, such that a protection from blasts is provided to the internal portion of said building structure, said internal portion is located at said second side of said protecting panel; 
       wherein said protecting panel is multi-layer and comprises at least one ballistic layer adapted to provide ballistic protection within said protected unit and at least one anti spall layer adapted to prevent spalls from being projected into said protected unit in case of a blast. 
     
     
         179 . The blast protected unit of  claim 178 , wherein said building structure is a framework having a plurality of shafts mechanically connected to each other such that at least one opening is formed, said blast protected unit is adapted to be fitted, placed and connected to said at least one opening. 
     
     
         180 . The blast protected unit of  claim 178 , wherein said blast protected unit is adapted to replace a wall, a ceiling, or a floor of said building structure or said framework. 
     
     
         181 . The blast protected unit of  claim 179 , wherein said framework is configurable into two configurations: (i) a folded configuration in which said framework is transportable; and (ii) an unfolded configuration in which said framework is arranged in an operative position. 
     
     
         182 . The blast protected unit of  claim 178 , wherein said blast protected unit with said energy absorption units in a deformed state after a blast is replaceable so as to provide protection to the internal portion of said building structure from additional blasts. 
     
     
         183 . The blast protected unit of  claim 178 , wherein said blast protected unit is adapted to provide protection from blasts at any preselected location in which said building structure is located. 
     
     
         184 . The blast protected unit of  claim 178 , wherein said energy absorption units are adapted to be positioned between said panel and said sub-frame in a hidden manner so as to provide an appearance of a regular non-protected blast protected unit. 
     
     
         185 . The blast protected unit of  claim 184 , wherein said hidden manner is adapted to hide from external observers the capabilities of said blast protected unit to provide protection from blasts. 
     
     
         186 . The blast protected unit of  claim 178 , wherein said blast protected unit is configurable into at least two configurations: (i) a disassembled configuration in which said blast protected unit is transportable; and, (ii) an assembled configuration in which said blast protected unit is connected to said building structure. 
     
     
         187 . The blast protected unit of  claim 178 , wherein said building structure is adapted to be protected with a plurality of said blast protected units. 
     
     
         188 . The blast protected unit of  claim 178 , wherein said sub-frame is adapted to hold said anti spall layer or said ballistic layer. 
     
     
         189 . The blast protected unit of  claims 178 , wherein said sub-frame is connectable to said building structure via a screw means or any fastening means. 
     
     
         190 . The blast protected unit of  claim 178 , wherein said blast protected unit is connectable to the wall, the ceiling, or the floor of said building structure. 
     
     
         191 . The blast protected unit of  claim 178 , wherein said blast protected unit is connectable to at least one another blast protected unit so as to provide a frameless structure, the connection between said blast protected units is provided by mechanical connection of the sub-frames of said blast protected units to each other. 
     
     
         192 . The blast protected unit of  claim 178 , wherein said blast protected unit is stable to a blast impulse of between about 50 psi.msec to about 600 psi.msec. and blast pressures in excess of 1500 psi. 
     
     
         193 . The blast protected unit of  claim 178 , wherein said energy absorption units are configured to withstand multiple numbers of blasts. 
     
     
         194 . The blast protected unit of  claim 178 , wherein said blast protected unit is adapted to be used as a pre-detonating unit adapted to at least partially mitigate impact of a ballistic attack on said building structure, said blast protected unit is connectable to said building structure via at least one connecting shaft at a predetermined distance from said building structure. 
     
     
         195 . The blast protected unit of  claim 178 , wherein said panel is adapted to be disconnected from said sub-frame when a predetermined level of blast occurs, so as to prevent collapse or damage of said building structure. 
     
     
         196 . The blast protected unit of  claim 178 , wherein said building construction further comprises at least blast protecting system connected to the same. 
     
     
         197 . The blast protected unit of  claim 178 , wherein said blast protected unit is adapted to be connected to an external portion or an opening of the building structure.