Modular Kubotan

A modular kubotan with adjustable segments and a ceramic or metal tip enhances user fit and technique execution, addressing the monolithic limitations of existing devices by enabling personalized adaptation and improved self-defense capabilities.

DE202026000524U1Active Publication Date: 2026-03-26GERMAN SPORT GUNS GMBH
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2026-02-04
Publication Date
2026-03-26

AI Technical Summary

Technical Problem

Existing self-defense devices, such as kubotans, have a monolithic construction that does not allow for adjustment to the user's hand width, affecting proper positioning and technique execution.

Method used

A modular design with detachable segments allows for adjustable length, featuring a conically tapered front end with a rounded tip made of ceramic or metal, and segments connected via fasteners for optimal fit and leverage techniques.

Benefits of technology

Enables personalized adaptation to user's hand size, improving handling and effectiveness in emergencies, and allows for breaking glass or applying pressure points effectively.

✦ Generated by Eureka AI based on patent content.

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Abstract

Device (1) for self-defense and / or escape from a dangerous situation, comprising an elongated rod-shaped base body (2) with a maximum length of 200 mm and a maximum diameter of 25 mm, the front end region of which is conically tapered and terminates with a rounded tip (7), characterized in that the elongated rod-shaped base body (2) is formed from a segment (3) forming the front end region, one or more segments (4.1, 4.2, 4.3, 4.4, 4.5, 4.6) forming the middle section and optionally a segment (5) forming the rear end region, and the individual separately formed segments (3, 4, 5) are detachably connected to each other via fastening means (6).
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Description

[0001] The present invention relates to a device for self-defense and / or escape from a dangerous situation, in particular a kubotan and / or a glass breaker. State of the art

[0002] Such devices are known from the prior art, for example from US 2001 / 0019967 A1. These devices, commonly referred to as kubotans, are made of a robust material and have a length of 120 to 180 millimeters and a diameter of 15 to 20 millimeters. They serve as an effective amplifier for striking, pushing, and leverage techniques that can be used to defend against an attacker in dangerous situations.

[0003] For the correct execution of striking, pushing, and leverage techniques, the correct positioning in the fist is crucial. Ideally, the device should protrude slightly on both sides. This is not the case with devices known from the prior art due to their monolithic construction.

[0004] The object of the present invention is therefore to provide a device for self-defense and / or escape from a dangerous situation that is improved compared to the prior art and allows the length to be adjusted to the hand width of a user. Description of the invention

[0005] According to the invention, the problem is solved by a device having the features of claim 1.

[0006] The device for self-defense and / or escape from a dangerous situation consists, by type, of an elongated rod-shaped base body with a maximum length of 200 mm and a maximum diameter of 25 mm, wherein the rod-shaped base body includes a front end area that is conically tapered and terminates with a rounded tip.

[0007] According to the invention, the elongated rod-shaped base body is formed from a segment forming the front end region, one or more segments forming the middle part and optionally a segment forming the rear end region, and the individual separately formed segments are detachably connected to each other via fastening means.

[0008] The modular design of the device allows for individual length adjustment, which can be optimally adapted to the user's hand width. This improves handling in emergencies. Alternatively, the length can also be extended beyond the optimal limit, for example, to perform specific leverage techniques. Thus, the inventive solution provides the user with a system with which they can easily adapt their device, such as a kubotan and / or glass breaker, to their individual needs.

[0009] Further advantageous embodiments of the invention are specified in the dependent claims. The features listed individually in the dependent claims can be combined in a technologically meaningful way and can define further embodiments of the invention. Furthermore, the features specified in the claims are specified and explained in more detail in the description, which also presents further preferred embodiments of the invention.

[0010] Advantageously, the segment forming the front end of the elongated, rod-shaped body features a rounded tip made of a ceramic material. Ceramic materials offer the significant advantage of extreme hardness and density, which allows tempered safety glass, such as that used in car side windows, to shatter effortlessly with targeted pressure applied to a small point. Thus, the device can be used not only effectively as a pressure point amplifier against a potential attacker, but also to break a pane of glass in order to free oneself or others from a dangerous situation.

[0011] Particularly advantageous is the ceramic material selected from the group comprising silicon carbides, silicon nitrides, zirconium oxides, titanium oxides, aluminum oxides, boron nitrides, aluminum titanates and / or mixtures thereof.

[0012] In principle, it is also possible to manufacture the rounded tip from a metal, such as stainless steel.

[0013] According to a further advantageous embodiment, the rounded tip has a radius of curvature in the range of 2.5 to 7.5 mm, preferably in the range of 4.5 to 5.5 mm. The rounded tip can, for example, be in the shape of a sphere, which is then fixedly connected, for example by an adhesive bond, to the segment forming the front end. If the segment forming the front end is made of a metal, such as aluminum, brass, titanium, or steel, the spherical tip can also be recessed in a depression, forming a clamping connection. Of course, a spherical shape is not absolutely necessary; it is sufficient that the rounded tip has a radius of curvature in the aforementioned range to enable the required compressive force.Therefore, the element forming the rounded tip can, for example, also have the shape of a hemisphere.

[0014] The at least one or more segments forming the central part of the elongated, rod-shaped base preferably have a cylindrical shape. This shape has proven particularly easy to handle in such devices. To further improve the grip and handling of the device, the surface – in this case, the outer surface of the respective segment forming the central part – can be provided with grip recesses and / or ridges.

[0015] Advantageously, the segments forming the central part have the same length, which is preferably 20 mm. Of course, the length of the segments forming the central part can also vary and be, for example, 10 mm or 25 mm. A uniform length for the segments forming the central part is more advantageous from a manufacturing perspective and is therefore preferred.

[0016] In principle, any fasteners known to a person skilled in the art at the time of filing can be used to securely connect the individual segments, provided they allow for a detachable connection. The use of a threaded stud, which can be made of stainless steel, for example, has proven particularly advantageous with regard to the required stability and the rapid assembly of the device. Therefore, threaded studs are preferably provided as the fasteners, by which the individual segments of the elongated, rod-shaped base body are screwed firmly together. Each segment can have a threaded stud as an integral part of the segment and / or a threaded bore, so that any two adjacent segments can be screwed together.

[0017] Preferably, each segment of the elongated, rod-shaped base body consists of a solid metallic material. Preferred metals include, for example, steel, aluminum, brass, titanium, or other metals or metal alloys. However, with appropriate design, the segments can also be made of a dimensionally stable plastic or a possibly fiber-reinforced composite material.

[0018] To further improve the handling of the device according to the invention, in a further advantageous embodiment the segment forming the rear end region can have a transverse bore for a cord. Character description

[0019] The invention and its technical context are explained in more detail below with reference to the figures. It should be noted that the invention is not intended to be limited by the exemplary embodiments shown. Unless explicitly stated otherwise, it is also possible, in particular, to extract partial aspects of the situations explained in the figures and combine them with other elements and findings from the present description and / or the figures. Furthermore, it should be noted that the figures, and especially the depicted proportions, are only schematic. The same reference numerals denote the same objects, so that explanations from other figures can be consulted as needed. The figures show: Fig. 1 a first embodiment of the device according to the invention in an exploded view, Fig. 2 the in Fig. 1. The embodiment shown is in its assembled state, and Fig. 3 a further embodiment of the device according to the invention in the assembled state.

[0020] First, attention will be drawn to the Fig. 1 Reference is made to the device 1 according to the invention for self-defense and / or escape from a dangerous situation in a first embodiment variant.

[0021] The device 1 consists of an elongated, rod-shaped base body 2, which is formed from a segment 3 forming the front end region, several segments 4 forming the middle section, and a segment 5 forming the rear end region. As can be seen from the illustration, all segments 3, 4, and 5 are formed separately and detachably connected to each other by means of fasteners 6, so that the length of the device 1 can be individually adjusted.

[0022] The segment 3 forming the front end region tapers conically towards its tip and, in this embodiment, is made entirely of aluminum. At its front end, the segment 3 has a rounded tip 7 made of a ceramic material, which in this case is a sphere made of silicon nitride (Si3N4) with a diameter of 5 mm. Alternatively, the rounded tip 7 can also be made of zirconium oxide (ZrO2) or another ceramic or metallic material. This tip is inserted into a recess in the segment 3 and bonded to it. At its end axially opposite the tip 7, the segment 3 has a fastening element 6 in the form of a threaded stud 6.1, which in this embodiment forms an integral component of the segment 3 and is therefore also made of aluminum. The threaded stud 6.1 can alternatively be designed as a separate component, which can then be screwed into a corresponding threaded hole (not shown) or materially bonded to segment 3.

[0023] The central part of the elongated, rod-shaped base body 2 is formed by several segments 4, which are essentially cylindrical and also made of solid aluminum, like segment 3. Each of these six segments 4.1, 4.2, 4.3, 4.4, 4.5, 4.6 has axially extending threaded bores 8 on both of its end faces, into which the fastening elements 6, designed as threaded studs 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7 can be screwed to connect the respective segments 3, 4, 5 to one another. Due to the perspective view, the Fig. Figure 1 shows only the threaded holes 8 of the left end face of each segment 4.1, 4.2, 4.3, 4.4, 4.5, 4.6. The threaded studs 6.2, 6.3, 6.4, 6.5, 6.6, which serve to connect the segments 4.1, 4.2, 4.3, 4.4, 4.5, 4.6 forming the central part, are in this case M6 threaded studs made of stainless steel. Furthermore, it can be seen from the Fig. 1 and Fig. 2 can be seen that segments 4.1, 4.3, 4.5 have a grooved surface 9, whereas segments 4.2, 4.4, 4.6 are only provided with a circumferential groove 10.

[0024] The rear end of the elongated rod-shaped base body 2 is formed by the segment 5, which is provided with a transverse bore 11 for installing a cord (not shown). Analogous to segment 3, this segment 5 is also made of solid aluminum and has a fastening element 6 in the form of a threaded stud 6.7, which forms an integral component of this segment 5.

[0025] This threaded pin 6.7, like all the others, can also be designed as a separate component, which can then be screwed into a corresponding threaded bore 8 or be materially connected to the respective segment 3, 4, 5.

[0026] In the present embodiment, the length of segment 3 forming the front end region is approximately 25 mm, the length of each of the segments 4.1, 4.2, 4.3, 4.4, 4.5, 4.6 forming the middle section is approximately 20 mm, and the length of segment 5 forming the rear end region is approximately 10 mm, so that the in Fig. 2 Device 1 shown in the assembled state has a total length of approximately 155 mm.

[0027] In Fig.Figure 3 shows a further embodiment of the device 1 according to the invention in its assembled state, which in this case comprises only two segments 4.1, 4.2 forming the central part. The total length of this device 1 is therefore approximately 75 mm. Reference symbol list 1 Device 2 rod-shaped base bodies 3 segment forming the front end area 4. Middle section forming segment 5 segment forming the rear end area 6 Fasteners / Threaded studs 7 top 8 threaded holes 9 grooved surface 10 11 Circumferential groove Transverse bore QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 2001 / 0019967 A1

[0002]

Claims

[1] Device (1) for self-defense and / or escape from a dangerous situation, consisting of an elongated rod-shaped base body (2) with a maximum length of 200 mm and a maximum diameter of 25 mm, the front end of which is tapered and terminates with a rounded tip (7), characterized by , that the elongated rod-shaped base body (2) is formed from a segment (3) forming the front end region, one or more segments (4.1, 4.2, 4.3, 4.4, 4.5, 4.6) forming the middle part and, if applicable, a segment (5) forming the rear end region, and that the individual separately formed segments (3, 4, 5) are detachably connected to each other via fastening means (6). [2] Device (1) according to claim 1, characterized by , that the segment (3) forming the front end region of the elongated rod-shaped base body (2) has a rounded tip (7) made of a ceramic material. [3] Device (1) according to claim 2, characterized by that the ceramic material is selected from the group comprising silicon carbides, silicon nitrides, zirconium oxides, titanium oxides, aluminum oxides, boron nitrides, aluminum titanates and / or mixtures thereof. [4] Device (1) according to any one of the preceding claims, characterized by , that the rounded tip (7) has a radius of curvature in the range of 2.5 to 7.5 mm, preferably in the range of 4.5 to 5.5 mm. [5] Device (1) according to any one of the preceding claims, characterized by , that the segment(s) forming the middle part (4.1, 4.2, 4.3, 4.4, 4.5, 4.6) of the elongated rod-shaped base body (2) have a cylindrical shape. [6] Device (1) according to any one of the preceding claims, characterized by, that the segments (4.1, 4.2, 4.3, 4.4, 4.5, 4.6) forming the central part of the elongated rod-shaped base body (2) have the same length, which is preferably 20 mm. [7] Device (1) according to any one of the preceding claims, characterized by , that threaded studs (6) are provided as fastening means. [8] Device (1) according to claim 7, characterized by , that each of the segments (3, 4, 5) has an integrated threaded pin (6) and / or a threaded bore (8) so that any two adjacent segments (3, 4, 5) can be screwed together. [9] Device (1) according to any one of the preceding claims, characterized by , that each of the segments (3, 4, 5) of the elongated rod-shaped base body (2) consists of a solid metallic material. [10] Device (1) according to any of the preceding claims, characterized by , that the segment (5) forming the rear end area has a transverse bore (11) for a cord.

Citation Information

Patent Citations

  • Defensive device

    US20010019967A1