SAFETY ACCESS TO A ROOM

Abstract

A safety access to a room in particular a class room with a safety lock, an entry from outside and an exit to the room, comprising a first door in the exit and a locking door which renders the locking chamber lockable.

Claims

1. A safety access to a room, the safety access comprising: a safety lock, including a locking chamber, an entrance from an outside, and an exit to the room; a first door in the exit; and a locking door which renders the locking chamber lockable.

2. The safety access according to claim 1, wherein the locking chamber is arranged opposite to the entrance and the exit is at one side of the safety lock with respect to the locking chamber and the entrance.

3. The safety access according to claim 1, wherein the first door forms the locking door.

4. The safety access according to claim 1, wherein the locking chamber is transparent towards the room.

5. The safety access according to claim 1, wherein the locking chamber includes a dummy door which is not openable or at least not openable from the locking chamber.

6. The safety access according to claim 1, wherein the first door is not openable by hand from the safety lock.

7. The safety access according to claim 1, wherein the locking door includes a quick drive for locking the locking chamber.

8. The safety access according to claim 1, wherein the locking door locks the locking chamber self-acting when a person enters the locking chamber.

9. The safety access according to claim 1, wherein the locking chamber includes a restraining device for fixating a person in the locked locking chamber.

10. The safety access according to claim 1, wherein the room is a class room.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The invention is subsequently described in more detail based on an embodiment described in more detail with reference to drawing figures, wherein:

[0017] FIG. 1 illustrates a class room with a safety access according to the invention; and

[0018] FIG. 2 illustrates the safety access according to the invention with a locked locking chamber.

DETAILED DESCRIPTION OF THE INVENTION

[0019] The class room 1 illustrated in FIG. 1 which generally represents a chamber or a room in a building includes a safety access 2 according to the invention with a safety lock 3 which protects students and teachers in the class room or generally people in the room against a homicidal attacker 4. The safety lock 3 is a short hall way or a small ante chamber in the class room 1 through which the class room 1 is entered or exited. The safety lock 3 connects to a wail opening 5 like a door opening in a wall 6 of the class room 1. The wall opening 5 is also designated as an entrance 7 of the safety lock 3 through which the safety lock 3 can be entered from an outside and exited towards the outside, Viewed from above the safety lock 3 in the embodiment is U-shaped with a flat side wall 8 and a semi cylindrical face wall 9 which is arranged opposite to the entrance 7. The side wall 8 and the face wall 9 in the embodiment are made from bullet resistant glass or bullet resistant plastic material so that a homicidal attacker which runs quickly and nervously and therefore with low attention for his environment through the entrance 7 into the safety lock has the impression that he can walk straight into the class room 1 since he sees people in the room through the transparent wall 8 and the face wall 9 of the safety lock 3.

[0020] The safety lock includes an opening opposite to the flat wall 8 wherein the opening is designated as an exit 10 and through which the class room 1 is entered from the safety lock 3 or vice versa. The class room 1 is exited through the safety lock 3. In the exit 10 the safety lock 3 includes a first door 11 which is closed in FIG. 1, this means it closes the exit 10. The first door 11 can be opened by hand by depressing a door handle 12 only from the class room 1, however not from the safety lock 3. The first door 11 can be opened from the safety lock 3 with a key or for example by typing in a code. Also a remotely controlled opening of the first door 11 can be possible, however, as stated supra there is no option to open the first door 11 by hand from the safety lock 3. To a person like the homicidal attacker 4 who runs into the safety lock 3 quickly and with a low level of attention for his environment the first closed door 11 on its one side looks like an open door of the entrance 7 through which the safety lock 3 can be entered from an outside. The safety lock 3 is closed on all sides and covered on top so that there is no option to enter the class room 1 when the first door 11 is closed like illustrated in FIG. 1, this means it closes the exit 10 of the safety lock 3 which leads into the class room 1. Therefore the homicidal attacker 4 runs through the entrance 7 straight into and through the safety lock 3 until he hits the transparent face wail 9 that is semi cylindrical in the embodiment which would typically subdue him already. As soon as the homicidal attacker 4 or another unauthorized person is in the semi cylindrical face wail 9 of the safety lock 3 the first door 11 which is simultaneously a locking door 13 is opened, wherein the first door 11 is pivoted into the safety lock 3. The first door 11 is pivoted by 90 into the safety lock 3 so that it locks the attacker 4 in the semi cylindrical face wall 9 of the safety lock 3 whose interior forms a locking chamber 14. In this locking position in which the first door 11 locks the homicidal attacker 4 in the locking chamber 14 the first door 11 which simultaneously forms the locking door 13 cannot be opened from the locking chamber 14. The homicidal attacker is caught in the locking chamber 14 until security opens the locking door 13 and arrests the attacker.

[0021] Opening the first door 11 which simultaneously forms the locking door 13 and pivoting it by 90 into the locking position in which the first door and thus the locking door 13 locks the locking chamber 14 is performed self-acting with a non illustrated quick drive which includes for example a spring for example a spiral spring or pneumatically. The quick drive can be triggered by remote control from the class room 1 and/or automatically for example by a light switch or a motion detector which determines when the locking chamber 9 is entered by the attacker 4.

[0022] In the entrance 7 a conventional room door can be provided which opens in outward direction or away from the first door 11 In the embodiment no door is provided in the entrance 7. The safety lock 3 can have another shape than the drawn shape and the described shape and transparent bullet resistant walls 8 and 9 are not mandatory but are advantageous.

[0023] Two gas tight bags 15 are arranged at inner corners between the locking door 13 and the semi cylindrical face wall 9 wherein the bags are inflatable like air bags with compressed gas or pyrotechnically, however, differently from an air bag they maintain an interior pressure until the interior pressure is released, In the embodiment the bags 15 inflate into cylinders as illustrated in FIG. 2 which illustrates the inflated bags 15. The bags 15 form a constriction device 16 which fixates the homicidal attacker 4 in the locking chamber 14 or at least significantly reduce his mobility.

[0024] Since the first door 11 which simultaneously forms the locking door 13 is opened when locking the locking chamber 14, this means the first door 11 opens the exit 10, an escape path 17 opens when the locking chamber 14 is locked wherein the escape path leads from the class room 1 through the exit 10 and the safety lock 3 in outward direction.