Patent ID: 8413851
Filing Date: 2013-04-09
Classification: B65D,Y10T

Abstract:
1. A security device for bulk storage tanks, said security device comprising: a housing configured to be positioned at a bulk storage tank, said housing defining a cavity, at least a portion of which is open toward the bulk storage tank, and said housing further defining first and second apertures for permitting access to said cavity; a first movable access door positioned at said first aperture of said housing and a second movable access door positioned at said second aperture of said housing, said first and second movable access doors each being operative to selectively cover respective ones of said first and second apertures in said housing; an elongate lock member movably coupled to said housing in said cavity, said elongate lock member having a proximal end portion disposed toward said first movable access door and a distal end portion disposed toward said second movable access door, said elongate lock member being movable to an unlocking position when said first movable access door is in an open position, and said elongate lock member being substantially fixed in a locking position when said first movable access door is in a closed position; a latch receiver at said second movable access door, said latch receiver configured to be selectively engaged by said distal end portion of said elongate lock member; and wherein said distal end portion of said elongate lock member engages said latch receiver when said elongate lock member is in its locking position and said second movable access door is in a closed position, and wherein said distal end portion of said elongate lock member is configured to disengage said latch receiver when said elongate lock member is in its unlocking position to permit said second movable access door to be moved to an open position.