US 4,122,783 AGranted

Apparatus for protecting a room against penetration thereinto of armed persons

OwnerGisberto Pretiniinventor

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Abstract

Access to the room is provided only by a movable compartment which must be entered by a person, at an entry opening, and moved along an access path, to an access opening, in order for the person to enter the room. A magnetic detector is provided either wholly within the compartment, or along the access path, or partly within the compartment and partly along the access path, to detect the presence of ferromagnetic masses, such as weapons, carried by a person within the movable compartment. Known locking device are provided so that, upon such detection of the presence of a ferromagnetic mass, movement of the compartment along the access path to the access opening can be interrupted so that the person is retained in the compartment. The compartment may comprise a box reciprocable along the access path between the entry opening and the access opening, or may be a section of a revolving door and, in either case, the compartment is formed of non-magnetic material. A television camera or the like may be provided either adjacent the entry opening or along the path to obtain a picture of a person entering the compartment.

Claims15

Dependent claims

In apparatus for protecting a room against penetration thereinto of armed persons, of the type including a locking system for access door means for the room, the improvement comprising, in combination, a movable compartment constituting said access door means and which must be entered by a person at an entry opening and moved along an access path to an access opening in order for such person to enter said room, said compartment having walls defining an enclosure open toward said entry and access openings;

at least one fixed side wall extending along said access path between said entry opening and said access opening and cooperable with said compartment walls to prevent entry into and exit from said enclosure of said movable compartment except at said entry and access openings;
and respective magnetic field producing components on a pair of spaced apart walls included in said walls of said access path and of said compartment, and between which a person must pass to proceed from said entry opening to said access opening;
said magnetic field components producing a magnetic field therebetween constituting detector means operable to detect the presence of ferromagnetic masses, such as weapons, carried by a person within said movable compartment as said compartment moves along said access path;
said movable compartment, upon such detection of the presence of a ferromagnetic mass thereinto, being arrested at a position along said access path preventing a person, in said movable compartment, entering said room.

1 more element

detector means operatively associated with at least one of said access path and said compartment and operable to detect the presence of ferromagnetic masses, such as weapons, carried by a person within said movable compartment;
said movable compartment, upon such detection of the presence of a ferromagnetic mass therein, being arrested at a position along said access path preventing a person, in said movable compartment, entering said room;
said movable compartment being formed in a rotor-door having radial walls defining respective movable compartments;
said access path being defined, in part, by outer walls at least partially enclosing said rotor-door;
said rotor-door comprising a central fixed axis;
a cylinder concentric with said central fixed axis, fixed against movement, and supported by said central fixed axis;
a non-ferromagnetic movable structure rotatable around said central fixed axis and including a series of angularly spaced radially extending rectangular panels, said panels extending outwardly from the external periphery of said cylinder and being movable relative to said cylinder;
supporting means for said movable structure including bearings on said central fixed axis;
two angularly adjacent radial panels constituting, together with said cylinder, each individual movable compartment designed to accommodate only a single person;
a peripheral wall surrounding said rotor-door and having two transit openings spaced angularly from each other by at least the angular extent of an individual movable compartment, one of said transit openings constituting said entry opening and the other of said transit openings constituting said access opening;
said detector means comprising two components, one arranged on the inner surface of said peripheral wall and the other arranged on the outer periphery of said cylinder, in radial alignment with each other.

8 more elements

Dependencies are inferred from the claim text.