Securing device for preventing an attempted theft and unlocking device

A securing device for preventing theft of an article held by said securing device comprising:

• a housing for holding an article;
• a closing element movable relative to said housing between a locking position and a release position;
• a latch element which engages said closing element when said closing element is in said locking position;
• a piston chamber connected to said latch element, said piston chamber including an aperture;
• and
• a differential pressure source for changing a pressure in said piston chamber through sid aperture and thereby cause movement of said latch member.

A securing device for preventing theft of an article held by said securing device comprising:

• a housing for holding an article;
• a closing element movable relative to said housing between a locking position and a release position;
• a latch element which engages said closing element when said closing element is in said locking position;
• a first spring biasing said closing element toward said release portion;
• wherein said latch element is movable between a first position at which said latch element engages said closing element in said locking position, and a second position at which said latch element does not engage said closing element such that said closing element is allowed to move to said release position, the securing device further including a second spring biasing said latch element toward said first position;
• and
• wherein said latch element is connected to a piston chamber having an aperture therein for connection to a vaccum source, such that upon application of a vacuum to said piston camber, said latch element is moved from said first position to said second position to thereby release said closing element.

A securing device comprising:

• a housing for holding an article;
• a latch element movable between first and second positions, wherein said article is locked in said housing in said first position and removable from said housing in said second position;
• a piston chamber connected to said latch element, wherein said latch element is movable relative to said piston chamber upon application of a differential pressure to said piston chamber such that a pressure in said piston chamber is different from ambient pressure;
• and
• a differential pressure source for supplying a differential pressure to said piston chamber.

An unlocking device for unlocking a securing device comprising:

• a mouthpiece for connecting said unlocking device to a securing device;
• a chamber;
• a piston mounted within said chamber and movable within said chamber to thereby create a pressure differential within said chamber;
• a duct separate from said piston, said duct including a passage connecting said mouthpiece with said chamber such that said pressure differential is transmitted to said mouthpiece.