DE20013747U1 - Collapsible hydrant key for attachment to the fire hatchet - Google Patents

Description

Description

Foldable hydrant key for attachment to the fire brigade axe (DlN 14 924).

Conventional above-ground hydrant keys with the DIN numbers 3223 and 3222 are rigid tools that combine both the key and the lever required to open hydrants (Handbook for firefighters/Hamilton. Founded by Walter Hamilton. New edition by Dipl.-Ing. Ulrich Krott, Dipl.- Ing. Rolf Schmid, Dipl.- Ing. Hermann Schröder; 18th edition; Stuttgart, Munich, Hanover, Berlin, Dresden; Boorberg Verlag, 1995; page 440). No comparable applications could be found in German and international patent applications under the number E 03 b 9/ 02.

The invention specified in claim 1 is based on the problem of creating an above-ground hydrant key that is as compact as possible and that can be carried by a firefighter as part of his personal equipment.

This problem is solved with the features listed in claims 1 and 2.

This results in the following advantages:

Due to its small dimensions, the newly developed hydrant key can be carried in a small bag attached to the firefighter's safety belt, for example. Furthermore, a fire engine or tank fire engine usually only contains a conventional hydrant key. In some cases, the location of the hydrant is not known (especially in buildings and facilities located outside of built-up areas). If several firefighters are equipped with the new hydrant key, they can search for a hydrant separately and put it into operation immediately. This saves valuable time in an emergency.

The key is also suitable for opening fire department access roads, which are secured against unauthorized access with a post with a triangular lock. A member of the crew of a fire engine can remove the barrier with the newly invented hydrant key that they carry with them without first having to get the standard hydrant key, which is usually located in the rear of the vehicle. This can also potentially save vital seconds here.

Occasionally, when setting up a hose line, it is very difficult to connect two couplings together. Reasons for this could be damaged or dirty couplings, for example. In this case too, the attachable hydrant wrench is an advantage, as the foldable bracket can also be used to couple hoses with coupling sizes C (DIN 14 332- C 42 or DIN 14 302- C) and B (DIN 14 303- B). This can save several minutes, as you don't have to fetch or search for another hydrant wrench.

An embodiment of the invention is explained with reference to Figures 1 to 3. They show:

Fig. 1 the hydrant key as an exploded view,

Fig. 2 the hydrant key attached to the axe, the large triangular key, the bracket folded in,

Fig. 3 the hydrant key attached to the axe with the bracket folded out to open the hydrant valve and the small triangular key folded into the base body (1).

The small triangular key (8) is designed so that it can be folded out at a right angle to the head of the axe or folded into the recess in the base body (1). Part 9 serves as a fastening and at the same time as a hinge axis. To ensure safe handling, the triangular key locks into both positions. In the example, a ball lock (10-12) was chosen for illustration purposes.

This makes it possible to operate the key even when wearing gloves. Figures 1 and 2 show the large triangular key for opening the hydrant outlets. This key is integrated directly into the base body (1).

The bracket for opening hydrants consists of two individual components (13, 14) which are connected to one another with a joint (17). The two parts (13, 14) are secured in both the folded and unfolded positions. In the exemplary embodiment, a spring (18 - 21) prevents the above-mentioned parts from folding in or out by themselves. The pin (15), which is pushed into the holes provided for this purpose on the hydrant during use, is integrated into the bracket part (14). The entire bracket is movably connected to the base body (1). The joint (16) provided for this purpose is designed in such a way that it is possible to fold the bracket open sufficiently far to be able to grip the valve of the hydrant. In the exemplary embodiment, the bracket is secured in the folded position against unintentional unfolding. For illustration purposes, a ball lock (22 - 25) was also chosen, which enables easy handling. The bracket is shown in the folded state in Fig. 2 and in the unfolded state in Fig. 3.

One possible way of fastening is shown in Figures 1, 2 and 3. In the example, the hydrant key is pushed onto the side of the axe with the lever blade. The teeth (2) on one side and the barb lock (3) on the opposite side prevent the hydrant key from slipping off the axe. To ensure a secure hold, the tips of parts 2 and 3 are hardened. The barb lock is secured with a sufficiently strong spring (4). In the example shown, the locking elements (2, 3) are attached to the base body (1) using parts 5 - 7.

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Claims (2)

1. Hydrant key, which has the same options for opening a hydrant as the conventional above-ground hydrant key A DIN 3223. However, this hydrant key is characterized by - that it is foldable. 2. Hydrant key according to claim 1, characterized in that - that it can be attached to the fire brigade axe (DIN 14924) and - that the fireman's axe (DIN 14924) serves as a lever.