DEVICE FOR HOLDING A BAIT, IN PARTICULAR A BAIT FOR RODENTS

Abstract

The invention relates to a device (1) for mounting a lure (2), in particular a lure for rodents, comprising: —a housing part (3) that has at least one through-opening (9), in particular an axial through-opening, through which an access into an interior of the housing part is possible; and —at least one closing element (15) which has a main part and at least one lure receiving region, in particular on the main-part side, for receiving at least one lure (2), said closing element (15) being mounted in a movable manner relative to the housing part (3). The closing element (15) is moved away from the housing part (3) in an open position such that the at least one through-opening (9) is released and is moved towards the housing part (3) in a closed position such that the at least one through-opening (9) is closed.

Claims

1. A device (1) for mounting a lure (2), in particular a lure for rodents, characterized by a housing part (3), wherein the housing part (3) has at least one in particular axial through opening (9) through which access to an interior space in the housing part is possible, at least one closing body (15) which has a one main body (15a) and at least one lure-receiving region (15d) in particular in the main body for receiving at least one lure (2), wherein the closing body (15) is supported so as to be movable relative to the housing part (3) wherein the closing body (15) in an open position is moved away from the housing part (3) in such a manner that the at least one through opening (9) is exposed, and in a shut position is moved against the housing part (3) in such a manner that the at least one through opening (9) is closed off.

2. The device as claimed in claim 1, characterized in that the closing body (15) is supported so as to be reversibly movable between the open position and the shut position, or in that the closing body (15) is supported so as to be irreversibly movable between the open position and the shut position in such a manner that said closing body (15) in the shut position is capable of being mounted, or is mounted, in particular in a releasable manner, by way of at least one closing body holding installation.

3. The device as claimed in claim 2, characterized in that the closing body holding installation on the housing part and/or closing body comprises at least one mechanical and/or magnetic holding means which is adapted for mechanically and/or magnetically mounting the closing body (15) in the shut position.

4. The device as claimed in claim 1, characterized in that the main body (15a) of the closing body (15) is configured as a float or comprises at least one float.

5. The device as claimed in claim 1, characterized by at least one drive installation that is capable of being coupled or is coupled to the closing body (15) and is adapted for moving the closing body (15) from the open position to the shut position and/or vice versa.

6. The device as claimed in claim 5, characterized in that the or a drive installation is configured as a motorized drive installation (22) or comprises at least one of the latter.

7. The device as claimed in claim 5, characterized in that the or a drive installation is configured as a magnetic drive installation (32) or comprises at least one of the latter.

8. The device as claimed in claim 7, characterized in that the magnetic drive installation (32) on the housing part (3) and on the closing body (15) comprises at least one magnetic element (33, 34) that is capable of being magnetized and/or is magnetic, in particular at least one electromagnetic and/or permanently magnetic element (33, 34).

9. The device as claimed in claim 5, characterized by a controller installation (24) that for generating items of control information that control the operation of the drive installation is assigned to the at least one drive installation, wherein the controller installation (24) is adapted for generating the items of control information depending on an item of water-level information that describes the or a water level in the environment that receives the device (1) and is supplied by a water-level detection installation (25) for detecting the water level in an environment that receives the device (1), in particular in a sewer shaft.

10. The device as claimed in claim 1, characterized by a shut-position detection installation (26) for detecting the shut position of the closing body (15) that upon detection of the shut position of the closing body (15) is adapted for generating at least one of an acoustic and/or optical item of closed-position information and for outputting the latter by way of at least one output means (27).

11. The device as claimed in claim 1, characterized by at least one bite-detection installation (29) for the detection of lure-biting, wherein the bite-detection installation (29) upon detection of a bitten lure (2) is adapted for generating at least one of an acoustic and/or optical item of bite information and for outputting the latter by way of at least one output means (27).

12. The device as claimed in claim 10, characterized in that the or an output means (27) is disposed on or in the housing part (3), wherein said output means (27) is disposed on an exposed external face of the housing part (3) or within the interior space (5) in the housing part.

13. The device as claimed in claim 10, characterized in that the or an output means (27) is integrated in an external mobile terminal apparatus, wherein the shut-position detection installation (26) and/or the bite-detection installation (29) are/is adapted for communicating with the external mobile terminal apparatus and for transmitting the shut-position information and/or the bite-detection information to the external mobile terminal apparatus for output by the output means on the latter.

14. The device as claimed in claim 1, characterized in that the lure-receiving region (15d) is formed by at least one depressed portion of the main body (15a) of the closing body (15).

15. The device as claimed in claim 1, characterized in that the main body (15a) of the closing body (15) has at least one closing portion (16) which in the shut position of the closing body (15) in portions bears in a sealing manner on bearing portions (17) on the housing part.

16. The device as claimed in claim 1, characterized in that the main body (15a) of the closing body (15) comprises a support portion (15c) for supporting the closing body (15) on the housing part (3), said support portion (15c) being spaced apart from said main body (15a) and connected thereto by way of at least one connection web (15b).

17. The device as claimed in claim 16, characterized in that the support portion (15c) is dimensioned such that the latter by way of tilting movements of the closing body (15) relative to the housing part (3) is movable through the through opening (9) in the housing part.

18. The device as claimed in claim 16, characterized in that the support portion (15c) is provided with at least one securing contour (35), and the housing part (3) is provided with at least one counter-securing contour (37) that is configured so as to be complementary to said securing contour (35), wherein the securing contour (35) and the counter-securing contour (37) in the shut position of the closing body (15) interact in such a manner that the closing body (15) is securely supported in relation to the radial displacement movements relative to the central axis of the housing part (3).

19. The device as claimed in claim 18, characterized in that the at least one, or at least one, securing contour (35) on the support portion is formed by an in particular dome-shaped or wedge-shaped protrusion (36) that in relation to the central axis of the closing body (15) protrudes axially from the support portion (15c), and the at least one, or at least one, counter-securing contour (37) on the housing part is formed by an in particular dome-shaped or wedge-shaped convexity or clearance (38), or the at least one, or at least one, securing contour (35) on the support portion is formed by an in particular dome-shaped or wedge-shaped convexity or clearance, and the at least one, or at least one, counter-securing contour (37) on the housing part is formed by an in particular dome-shaped or wedge-shaped protrusion that in relation to the central axis of the housing part (3) protrudes axially from the housing part (3).

20. The device as claimed in claim 1, characterized in that at least one receptacle chamber (31) is configured or disposed in the interior space (5) in the housing part, electrical and/or electronic components of the device (1), in particular controller installations and detection installations, being disposable or disposed in said receptacle chamber (31).

21. (canceled)

22. (canceled)

23. (canceled)

24. (canceled)

25. (canceled)

Description

[0070] Further advantages, features, and details of the invention are derived from the exemplary embodiment that will be described hereunder, and by means of the drawings. In the drawings:

[0071] FIGS. 1-6 show in each case an in-principle illustration of a device for mounting a lure according to one exemplary embodiment of the invention; and

[0072] FIGS. 7-10 show in each case an in-principle illustration of a device for mounting a lure according to a further exemplary embodiment of the invention.

[0073] FIG. 1 shows an in-principle illustration of a device 1 for mounting a lure 2 according to one exemplary embodiment of the invention. The lure 2 contains substances, that is to say in particular toxins and active ingredients, which lead to pests such as, in particular, rats expiring and/or prevent pests reproducing. FIG. 1 obviously shows a sectional view of the device 1.

[0074] The device 1 comprises a housing part 3. The housing part 3 is configured from a corrosion-resistant material such as, for example, a steel sheet, and is configured so as to be (substantially) a hollow-cylindrical body, that is to say that the housing part 3 delimits a (substantially) cylindrical interior space 5.

[0075] The housing part 3 is inserted into a sewerage 4, that is to say into a waste water sewer or a waste water sewer shaft, respectively, in short a sewer shaft. The fastening of the housing part 3 is performed by fastening means (not shown in more detail) on the housing part, by way of which the housing part 3 is in particular releasably fastened to a wall of the sewerage 4. The fastening means can be configured so as to be hook-shaped such that the housing part 3 can be hooked into the wall of the sewerage 4 or into corresponding climbing installations (not shown) such as step irons, for example, on the sewerage.

[0076] An optional lid element 6 is provided in the region of an upper end side of the housing part 3. The housing part 3 at the end side is thus closable by way of a lid element 6. Potential upper access into an interior space 5 in the housing part can be achieved by removing the lid element 6. The lid element 6 has a threaded portion (not shown), while the housing part 3 has a threaded portion (likewise not shown) that is complementary to the former, such that the lid element can be screw-fitted to the housing part 3. An optional sealing element 7 which enables sealing of the housing part 3 in the region of the upper end side is furthermore disposed between the lid element 6 and the housing part 3. As mentioned, the lid element 6 is purely optional. To the extent that no lid element 6 is available, the upper end side of the housing part 3 can be closed off by a respective wall element at the end side on the housing part.

[0077] The housing part 3 in the region of a lower end side that is opposite the upper end side has a typically circular axial through opening 9. The through opening 9 establishes potential access into the interior space 5 in the housing part. The through opening 9 thus defines an upper region 5a of the interior space 5 that is above said through opening 9, and a lower region 5b of the interior space 5 that is below said through opening 9.

[0078] The through opening 9, is delimited by wall elements 11, in particular by the free ends of the latter, that in relation to the axis of symmetry of the housing part 3 run radially inward. The wall elements 11 in relation to the axis of symmetry of the housing part 3 protrude radially inward from the external wall 10 of the housing part 3. Those regions of the wall elements 11 that face the upper end side of the housing part 3 form an annular platform 8.

[0079] The device 1 furthermore comprises a closing body 15. The closing body 15 is a rotationally symmetrical component, comprising as construction elements or construction element portions, respectively, that belong to the former a main body 15a, a connection web 15b that in relation to the axis of symmetry of the main body 15a is axially protruding, and a plate-shaped support portion 15c that is disposed at the free end of the connection web 15b and in relation to the axis of symmetry of the main body 15a extends radially. The support portion 15c is thus connected to the main body 15a by way of the connection web 15b. This connection can be releasable, that is to say that both the main body 15a as well as the support portion 15c can be releasably connected to the connection web 15b by way of clamping, latching, or plug-fitting connections. Of course, it is also conceivable for the closing body 15 to be configured in an integral or monolithic manner, respectively.

[0080] As can be seen, a lure-receiving region 15d that is formed by a depression that in portions is annular is formed in the main body 15a. The lure-receiving region 15d in terms of the dimensions thereof is adapted to the dimensions of the lure 2 that here is likewise annular, such that said lure 2 is received in a stable manner in the lure-receiving region 15d.

[0081] The connection of the closing body 15 to the housing part 3 is performed in that the free ends of the support portion 15c are inserted into the interior space 5 in the housing part in such a manner that said free ends at the upper side engage across the wall elements 11 on the housing part and thus bear on said wall elements 11 in the open position of the closing body 15. This results in a captive but, as will yet be derived hereunder, releasable arrangement of the closing body 15 on the housing part 3, or a releasable connection between the closing body 15 and the housing part 3, respectively.

[0082] As can be seen, the support portion 15c on the closing body, in terms of the (radial) dimensions thereof, is dimensioned in such a manner that said support portion 15c is movable through the through opening 9 in the housing part by tilting movements of the closing body 15 relative the housing part 3. The external diameter, or the radial dimensions, respectively, of the support portion 15c is/are thus smaller than the internal diameter of the housing part 3. In order for the support portion 15c to be moved through the through opening 9 in the housing part, the support portion 15c initially has to be lifted or moved by a specific amount further into the interior space 5 in the housing part, and then tilted relative to the housing part 3. In this manner, the connection between the housing part 3 and the closing body 15 can be cancelled on demand and, in the case of the reverse sequence, be (re)established.

[0083] It can be derived from the explanations above that the closing body 15 is supported so as to be movable relative to the housing part 3. An open position and a shut position are provided in the context of the movable support of the closing body 15. The closing body 15 is thus supported so as to be movable relative to the housing part 3 in particular between an open position and a shut position, and can be moved between an open position and a shut position, and optionally vice versa.

[0084] In the open position shown in FIG. 1, the main body 15a of the closing body 15 is moved away from the housing part 3 in such a manner that the through opening 9 is exposed. In the shut position shown in FIG. 2, the main body 15a of the closing body 15 is moved against the housing part 3, that is to say against the lower portions of the wall elements 11 on the housing part that face the lower end side of the housing part 3, in such a manner that the through opening 9 is closed off. In the shut position of the closing body 15, the lure 2 that is received in the lure-receiving region 15d is thus enclosed between the main body 15a and the housing part 3. In the shut position of the closing body 15, the lure 2 that is received in the lure receiving region 15d is in particular disposed within the interior space 5 in the housing part, that is to say in particular within the lower region 5b of the interior space 5 in the housing part.

[0085] In the shut position of the closing body 15, bearing of closing portions 16 on the closing body in a sealing manner on respective lower portions of the wall elements 11 on the housing part, which are to be considered to be bearing portions 17 on the housing part, is provided. Bearing in a sealing manner results from the bearing portions 17 on the housing part being provided with a sealing element 19. A sealing element can optionally also be available on the closing portions 16 on the closing body.

[0086] The closure of the through opening 9 that is implemented in the shut position of the closing body 15 prevents undesirable ingress of water into the upper region 5a of the interior space 5 in the housing part, this being possible in the case of high water or gushing water, for example. As has been mentioned, since the lure 2 that is received in the lure-receiving region 15d in the shut position of the closing body 15 is enclosed between the main body 15a of the closing body 15 and the housing part 3, the risk of any contamination of the water that is located in the sewer shaft by the substances that are contained in the lure 2 is eliminated.

[0087] The movement of the closing body 15 from the open position to the shut position in the case of the exemplary embodiment shown in FIGS. 1, 2 is performed by a rise in the water level in the sewer shaft. This relates to the main body 15a of the closing body 15 being configured as a float. The main body 15a of the closing body 15 thus has a cavity (not shown) that is filled with air, for example. Alternatively or additionally, the main body 15a of the closing body 15 can be made from an in particular foamed plastic material of low density, which by virtue of the density differential floats on a water surface and does not sink. A movement of the closing body 15 from the open position to the shut position is thus automatically initiated by a rise in the water level in the sewer shaft. Accordingly, a movement of the closing body 15 from the shut position to the open position is initiated by a drop in the water level in the sewer shaft.

[0088] The closing body 15 can be supported so as to be movable in a reversible or irreversible manner. The movement of the closing body 15, as described, from the open position to the shut position can thus be reversible or irreversible. A support of the closing body 15 that is reversibly movable means that the closing body 15 can transfer from the open position to the shut position in a self-acting manner. A support that is irreversibly movable means that the closing body 15 in the shut position by way of a closing-body holding installation (not shown) is capable of being in particularly releasably mounted or is mounted, and can thus cannot transfer from the shut position to the open position in a self-acting manner. A respective closing body holding installation typically comprises at least one mechanical and/or magnetic holding means on the housing part and/or on the closing body, which holding means is adapted for mechanically and/or magnetically mounting the closing body 15 in the shut position. The mechanical and/or magnetic holding means on the housing part and/or on the closing body can thus interact in such a manner that the closing body 15 is securely mounted in the shut position and is not capable of being readily released from the latter.

[0089] FIG. 3 shows a device 1 according to a further exemplary embodiment of the invention. FIG. 3 herein shows the device 1 having a closing body 15 that is located in the open position. FIG. 4 shows the same exemplary embodiment having the closing body 15 located in the shut position. These again are sectional views of the device 1.

[0090] By contrast to the exemplary embodiments as shown in FIGS. 1, 2, the support portion 15c on the closing body at the upper side is provided with a securing contour 35, here in the form of an axially protruding dome-shaped protrusion 36. Accordingly, the housing part 3 in the region of the upper end side thereof is provided with a counter-securing contour 37, here in the form of a dome-shaped convexity 38, that is complementary to the securing contour 35. The counter-securing contour 37 can be integrated in a respective lid element 6, if the latter is available.

[0091] The securing contour 35 on the support portion and the counter-securing contour 37 on the housing part are in mutual axial alignment. Accordingly, the securing contour 35 on the support portion in the shut position of the closing body 15 engages in the counter-securing contour 37 on the housing part. The securing contour 35 on the support portion and the counter-securing contour on the housing part in the shut position of the closing body 15 thus interact in such a manner that the closing body 15 is supported so as to be secured against displacement movements that are radial in relation to the central axis of the housing part 3 (cf. FIG. 4).

[0092] FIG. 5 shows a device 1 according to a further exemplary embodiment of the invention. By contrast to the exemplary embodiments as shown in FIGS. 1 to 4, the device 1 here comprises a motorized drive installation 22 in the form of an electric motor that is coupled to the closing body 15 and is adapted for moving the closing body 15 from the open position to the shut position, or vice versa. A movement of the closing body 15 from the open position to the shut position here can thus be initiated in a targeted manner by a motorized drive installation 22 that is coupled to the closing body 15. The coupling between the motorized drive installation 22 and the closing body 15 is implemented by way of a traction means 23, for example in the form of a chain. The traction means 23 engages on the support portion 15c on the closing body. Of course, the main body 15a of the closing body 15 can also be configured as a float in this exemplary embodiment.

[0093] Controlling of the operation of the motorized drive installation 22 is performed by way of a controller installation 24 that is assigned to said motorized drive installation 22 and is adapted for generating items of control information that control the operation of the motorized drive installation 22.

[0094] The controller installation 24 is furthermore adapted for generating the items of control information depending on an item of water-level information that describes the or a water level in the sewer shaft and is supplied by a water-level detection installation 25 for detecting the water level in the sewer shaft that receives the device 1. Consequently, controlling of the operation of the motorized drive installation 22 can be performed so as to depend on a water level in the sewer duct that receives the device 1, that is detected by way of a respective water-level detection installation 25 and is mirrored in a respective item of water-level information.

[0095] In the exemplary embodiment shown in FIG. 3, the water-level detection installation 25 is disposed so as to be external, this is to say so as to be spatially separated from the device 1. The controller installation 24 is adapted for communicating in a wireless-based manner with the (external) water-level detection installation 25, for example. To this end, the controller installation 24 comprises a suitable receiver installation (not shown), and the water-level detection installation 25 comprises a suitable broadcasting installation (not shown). However, in principle, the or a respective water-level detection installation 25 can also be integrated in the device 1.

[0096] FIG. 6 shows a device 1 according to a further exemplary embodiment of the invention. By contrast to the exemplary embodiment as shown in FIG. 5, not a motorized drive installation 22 but a magnetic drive installation 32 is provided here. The magnetic drive installation 32 comprises an electromagnetic element 33 that is disposed in the upper region 5a of the interior space 5, and a permanently magnetic element 34 that is disposed on the closing body, that is to say here on the support portion. The permanently magnetic element 33 on the housing part, when energized, exerts a magnetic force of attraction on the permanently magnetic element 34 on the closing body of such magnitude that the closing body 15 is moved from the open position to the shut position. The operation of the electromagnetic element 33, that is to say in particular energizing of the latter, is likewise controlled by way of the controller installation 24. The explanations made in the context of controlling the operation of the motorized drive installation 22 apply in an analogous manner hereto.

[0097] As an alternative to the configuration having respective electromagnetic elements 33 and permanently magnetic elements 34, respectively, as shown in the exemplary embodiment shown in FIG. 6, it is also possible for permanently magnetic elements 34 on the housing part and electromagnetic elements 33 on the closing body to be provided. It is also conceivable for electromagnetic or permanently magnetic elements 33, 34 to be provided both on the housing part as well as on the closing body.

[0098] As shown for reasons of improved clarity only in the exemplary embodiments as shown in FIGS. 5, 6, the device 1 can furthermore comprise a shut-position detection installation 26 for detecting the shut position of the closing body 15. The shut-position detection installation 26 upon detection of the shut position of the closing body 15 is adapted for generating at least one of an acoustic and/or optical item of shut-position information, and for outputting the latter by way of an output means 27 which can be a loudspeaker, for example, and/or an in particular multi-colored LED. The shut-position detection installation 26 comprises a sensor system 28 for detecting the shut position of the closing body 15. The sensor system 28 that here is integrated in the bearing portions 17 on the housing part and is configured or adapted, respectively, as a pressure sensor system, detects bearing of the closing portions 16 on the closing body on the bearing portions 17 on the housing part.

[0099] As again shown for the sake of improved clarity only in the exemplary embodiments as shown in FIGS. 5, 6, the device 1 can also comprise a bite-detection installation 29 for detecting lure-biting. The bite-detection installation 29 upon detection of a bitten lure 2 is adapted for generating at least one of an acoustic and/or optical item of biting information and for outputting the latter by way of the output means 27. Consequently, the bite-detection installation 29 comprises a sensor system 30 for detecting lure-biting. The sensor system 30 can detect the weight of the lure 2, for example, wherein variations in the weight of the lure 2 due to biting can permit conclusions to be drawn in terms of lure-biting. The sensor system 30 can likewise detect forces that act on the lure 2 due to biting, in particular tensile forces, which likewise permit conclusions to be drawn in terms of lure-biting.

[0100] The bite-detection installation 29, depending on the biting information, can generate different acoustic and/or optical signals. With a view to outputting respective items of biting information in the form of optical signals it is conceivable for the weight of a new not bitten lure 2 to be potentially signaled by way of optical signals of green color and/or by way of optical signals that are permanently and constantly output, for example. The weight of a partially bitten lure 2 can be signaled by way of optical signals of yellow color and/or by way of optical signals that are output at a first flashing frequency, for example. Should the lure 2 be completely devoured, this can be signaled by way of optical signals of red color and/or by way of optical signals that in comparison to the first flashing frequency are output at a higher second flashing frequency, for example. Of course, the same applies to the output of acoustic signals, wherein the frequency and/or the rhythm of a tone or of a sequence of tones, respectively, are/is in particular variable so as to depend on the weight of the lure 2 or on the forces that act on the lure 2, respectively.

[0101] As opposed to the arrangement of the output means 27 on the housing part 3 as shown in the exemplary embodiments shown in the figures, it is also possible for the or an output means 27 to be integrated in an external mobile terminal apparatus (not shown) such as a smartphone, for example. In this case, the shut-position detection installation 26 and/or the bite-detection installation 29 are/is adapted for communication with the external mobile terminal apparatus and for transmitting the shut-position information and/or the bite-information to the external mobile terminal apparatus for output by the output means of the latter. The communication is implemented in particular so as to be wireless-based, that is to say by way of Bluetooth, WLAN, etc., for example, the shut-position detection installation 26 and/or the bite-detection installation 29 for this reason comprising respective wireless-based broadcasting installations.

[0102] As can be seen, an optional receptacle chamber 31 in which electrical and/or electronic components of the device 1, that is to say in particular the controller installation 24 and respective detection installations 26, 29 and optionally installations for supplying the latter with electrical power, such as electric power accumulators, for example, are disposed is configured in the interior space 5 in the housing part. The receptacle chamber 31 offers these components protection against external, that is to say in particular climatic and mechanical influences.

[0103] FIGS. 7 to 10 show in each case an in-principle illustration of a device 1 for mounting a lure 2 according to a further exemplary embodiment of the invention. As can be seen, FIG. 7 is a perspective partial view of the device 1 without the closing body 15; FIG. 8 is a longitudinal section through the device 1 as shown in FIG. 7; FIG. 9 is a plan view of the device 1; and FIG. 10 is an enlarged view of the detail X shown in FIG. 8.

[0104] The closing body 15 is therefore not shown in FIGS. 7 to 10, since technical aspects of the device 1 in particular in the context of a particular embodiment of a receptacle chamber 31 are to be visualized by means of these figures.

[0105] As can be derived from the exemplary embodiment shown in FIGS. 7 to 10, the housing part 3 that belongs to the device 1 can also be embodied in multiple parts. The housing part 3 here is embodied from an upper housing-part segment 3a and from a lower housing-part segment 3b. The housing-part segments 3a, 3b here are mutually fastened by way of holding clamps (not referred to in more detail here). Of course, other fastening principles for the mutual fastening of the housing-part segments 3a, 3b are also possible.

[0106] Moreover, a fastening installation 39 on the housing part, by way of which the housing part 3 is capable of being in particular releasably fastened or is fastened to a wall of the sewerage 4 is disposed on the external circumference of the lower housing-part segment 3b in the region of that end that faces away from the upper housing-part segment 3a.

[0107] The fastening installation 39 here comprises an external annular element 40 that is formed from steel, for example. The annular element 40 by way of a profile-type mounting 41, shown in FIG. 7, can be fastened to the wall of a sewer shaft. A holding web 42 in the shape of an annular disk emanates from the annular element 40 in the radial direction. The holding web 42 supports an optional securing element 43 that is fastened to the external wall 10 of the housing part 3, that is to say to the external wall 10 of the lower housing-part segment 3b. The securing element 43 that is likewise embodied in an annular manner here is fastened to the housing part 3, that is to say to the external wall 10 on the housing part, by means of a latching mechanism. The latching mechanism is implemented by the interaction of latching elements in the form of latching protrusions (not shown in more detail here) on the external housing wall and of counter-latching elements in the form of latching clearances (not shown in more detail here) on the securing element, the latching elements on the external housing wall being able to latch into said counter-latching elements. Of course, a reversed arrangement, that is to say latching elements in the form of latching clearances on the external housing wall and latching elements in the form of latching protrusions on the securing element, is also conceivable.

[0108] A cylindrical receptacle chamber 31 is disposed in that region that forms an upper side or end side, respectively, of the housing part 3, that is to say of the upper housing-part segment 3a. The receptacle chamber 31 has a cylindrical receptacle chamber main body 45 that delimits a receptacle chamber volume 44 for receiving electrical and/or electronic components of the device 1. As can be seen, the receptacle chamber main body 45 in portions protrudes into the receptacle space 5 in the housing part.

[0109] A lure-holding installation (not shown) for mounting a further lure 2 can be disposed on a lower portion of the receptacle chamber main body 45 that protrudes into the receptacle space 5 in the housing part.

[0110] The receptacle chamber 31 is releasably fastenable to the housing part 3, that is to say to the upper housing part 3a, here. The releasable fastening of the receptacle chamber 31 to the housing part 3 is capable of being configured or is configured by a form-fitting interaction of fastening portions 46 on the housing part with fastening portions 47 on the receptacle chamber main body. The receptacle chamber 31 and the housing part 3 are thus each equipped with fastening portions 46, 47, a stable or captive, respectively, but releasable fastening of the receptacle chamber 31 to the housing part 3 being implementable by way of the interaction of said fastening portions 46, 47. As can be derived in particular from FIG. 10, a form-fitting interaction of respective fastening portions 46, 47 is understood to be in particular a mutual engagement of respective fastening portions 46, 47 in one another or across one another, at least in portions.

[0111] The receptacle chamber 31 is disposed on the housing part 3 so as to be supported in a rotatable manner between a fastening position and a releasing position. In the fastening position, the fastening portions 46 on the housing part and the fastening portions 47 on the receptacle chamber main body interact in a form-fitting manner such that the receptacle chamber 31 is releasably fastened to the housing part 3. In the releasing position, the fastening portions 46 on the housing part and the fastening positions 47 on the receptacle chamber main body do not interact, such that the receptacle chamber 31 is releasable from the housing part 3. The fastening of the receptacle chamber 31 to the housing part 3 can thus be established and cancelled again by rotating movements of the receptacle chamber 31 relative to the housing part 3 about a rotation axis which is typically congruent with the central axis of the receptacle chamber 31. The receptacle chamber 31 can thus be transferred from the fastening position to the releasing position and vice versa by rotating movements relative to the housing part 3.

[0112] As can be derived from FIG. 10, the fastening portions 46 on the housing part are configured as an annular disk segment element 49 that radially protrudes inward from an axially aligned cylindrical portion 48 of the housing part 3, having at least one shoulder-type fastening protrusion 50 that axially protrudes from said annular disk segment element 49. The fastening portions 47 on the receptacle chamber main body are configured as an annular disk segment element 52 that radially protrudes outward from a cylindrical appendage of the receptacle chamber main body 45, having a corresponding axially protruding shoulder-type fastening protrusion 53, that is to say is in particular configured or aligned so as to be complementary, respectively, to the fastening protrusion 50 that is formed on the fastening portion 46 on the housing part.

[0113] In order for respective rotating movements of the receptacle chamber 31 relative to the housing part 3 to be implemented, the receptacle chamber 31 in the region of an upper exposed cover portion 54, shown in FIG. 9, has a tool-engagement region 55 in which a presently T-shaped tool 56 having an engagement portion 58 can engage in a form-fitting manner. By way of the tool 56 that engages in the tool-engagement region 55, as shown in FIG. 9, the rotating movements can be transmitted to the receptacle chamber 31 in order for the receptacle chamber 31 to be transferred from the fastening position to the releasing position and vice versa. As can be seen, the tool-engagement region 55 here is configured having tool receptacles 59 in the shape of annular segments here, in which the engagement portion 58 on the tool, that is designed with a rounded cross section, can engage such that counter-clockwise rotating movements of the tool 56 lead to counter-clockwise movements of the receptacle chamber 31.

[0114] A detent portion 60 is configured so as to be disposed opposite the engagement portion 58 in terms of the circumference of the latter. A gap space 61 that extends on the circumference and by way of which the tool 56 can be introduced into the tool-engagement region 55, so as to interact with the latter in a corresponding manner, is formed between the engagement portion 59 and the detent portion 60.

[0115] By disposing or configuring, respectively, the tool-engagement region 55 in the region of an upper exposed cover portion 54 of the receptacle chamber 31, the tool-engagement region 55 is at all times accessible (from above). The geometric design of the tool-engagement region 55 is adapted to the design of the tool 56. The geometric design of the tool-engagement region 55 is presently of such a type that a T-shaped tool 56 can engage on the former in a form-fitting manner such that by way of rotating movements of the tool 56 that are indicated by the double arrow 57, rotating movements can be transmitted to the receptacle chamber 31.

[0116] Accordingly the tool-engagement region 55 in a state in which the device 1 is inserted in an orderly manner into a sewer shaft is readily accessible, that is to say in particular from above. By way of suitable shaping and dimensioning of a respective tool 56 it is not mandatory for a user to climb down into the sewer shaft in order for the receptacle chamber 31 to be transferred from the fastening position to the releasing position, or vice versa, by way of corresponding rotating movements. The receptacle chamber 31 can thus be released from the housing part 3 from outside the sewer shaft and be optionally removed from the sewer shaft. This can be of practical value for example for checking purposes, for example as to whether lure-biting has occurred, such that checks can be carried out in a significantly simpler and more rapid manner. The receptacle chamber 31 can thus be removed from the sewer shaft and be introduced into the sewer shaft again without climbing into the sewer shaft.

[0117] Notwithstanding the housing part 3 in the exemplary embodiments as shown in the figures being inserted into a sewerage 4, that is to say into a waste-water sewer or a waste-water sewer shaft, respectively, in short a sewer shaft, it is generally possible for the housing part 3 to be disposed on or in an environment in which the latter can come into contact with water, in particular rain water, but also industrial waste water, combined water, surface water, etc. and/or other liquid media. In principle, the housing part 3 is disposable or is disposed in such locations where the possibility of a contamination of water and/or other liquid media by the substances that are contained in the lure 2 is conceivable. This applies in particular to locations where water or liquid media are present in principle, or where water or liquid media, respectively, can accumulate.

[0118] The housing part 3 can thus be disposable or be disposed at or in specific structures or parts of structures, respectively, or buildings or parts of buildings, respectively, in civil engineering sectors above and below ground such as, for example, overpasses or underpasses, garages, basements, tank farms, silos, etc. Of course, the housing part 3 can also be disposable or be disposed at any other dispositions which can come into contact with water, in particular rain water, such as, for example, waste containers, cultivation projects, that is to say trees, for example, stockades, in particular walls or fences, stops for public or private transportation means, phone boxes, street lighting, distribution or utility boxes, respectively.

[0119] The device 1 or the housing part 3, respectively, can also be disposable or be disposed on or in transportation or transit means, respectively, such as ships, for example.