Blast valve utilizing an aerodynamically configured blade
AssigneeBeth-El Zikhron Yaaqov Industries Ltd.
InventorsSamuel KOEGER, Jonathan SCHNEIDER
Life of this patent
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Abstract
A louver type blast valve making use of an aerodynamically configured blade, independently activated by air flow to block a blast shock wave and a subsequent return suction wave. The blast valve (FIG. 6) including a frame and at least one aerodynamically configured blade, independently activated by air flow to block a blast shock and a potentially following return wave. The aerodynamically configured blade having an elongated shape, including at least a steep convex surface and a flat or shallow concave surface, forming a leading edge and a trailing edge at the intersection of the surfaces. The blade being hinged to the frame about a longitudinal axis passing between the steep convex surface and the flat or shallow concave surface.
Claims17
A blast valve comprising a frame and at least one aerodynamically configured blade, independently activated by air flow to block a blast shock and a potentially following return wave, said aerodynamically configured blade comprising:
- an elongated shape, including at
- least a steep convex surface and a flat or shallow concave surface, forming a leading edge and a trailing edge at the intersection of said surfaces, said blade being hinged to said frame about a longitudinal axis passing between said steep convex surface and said flat or shallow concave surface.
A blast valve comprising a frame and at least a first aerodynamically configured half-blade and a second aerodynamically configured half-blade, each of said half-blades being hinged to said frame about its own axis, independently activated by air flow to block a blast shock and a potentially following return wave, each of said aerodynamically configured first and second half-blades comprising:
- a semi circular rounded face at a first side, centric with said axis, and at least a steep-convex surface and a flat or shallow-concave surface at a second side, the intersection of said steep-convex and flat or shallow-concave surfaces forming a leading edge on said second half-blade and a trailing edge on said first half-blade, and wherein said semi circular rounded faces of said first half-blade and said second half-blade are facing each other, positioned in close proximity.
Dependencies are inferred from the claim text.