Security closure

Claim 1

A security gate for releaseably securing an access opening to prohibit unauthorized entry and which can be readily opened for rapid exit comprising, a rigid frame structure formed of rectangularly disposed structural frame members, said frame members defining opposed top and bottom members and opposed interconnected side members, said frame members defining the periphery of the opening to be secured, said top and bottom frame members, each having a rear flange disposed in the plane of said opening along the interior side of the opening and a front flange spaced therefrom and disposed in the plane of said opening on the exterior side thereof, a closure hingedly connected to one of said side members for swinging inwardly between an open and closed position, said front flanges defining a stop for said closure in the closed position; and a securing means extending transversely of said closure between said top and bottom frame members, said securing means including a rigid bar extending between said top and bottom frame members, said bar having its opposed ends inserted between the closure and the rear flange of said top and bottom frame members, and a lock means connected to said bar, said lock means including a dead bolt arranged to extend between a latching and unlatching position, and a means connected to said dead bolt for locking said bar in position between said top and bottom frame members in the latching position; said dead bolt defining a movable extension of said bar.