DE102022130463B3 - Bait station with bait bell and guide - Google Patents

Abstract

A baiting station (32) for eating bait (22) for animals (20) contains a guide means (36) which extends between a baiting area (42) and a maintenance area (44) along a longitudinal line (40) and is attached to a fixed structure (34) in a Mounting position (M) can be attached in a fixed position, with the longitudinal line (40) running in the direction of gravity (10) and the bait area (42) lying below the maintenance area (44), and a bait bell (50) with an access opening (54), and a bell-shaped airtight and watertight drying chamber (56) with drying opening (60) and holder (58) for the food bait (22), the bait bell (50) being slidably guided along the longitudinal line (40) on the guide means (36) so that in the Mounting position (M) of the drying space (56) from the drying opening (60) bell-shaped against the direction of gravity (10) arches upwards. A bait system (30) for baiting animals (20) with food baits (22) with the bait station (32) contains the fixed structure (34), the guide means (36) being fixed in place on the fixed structure (34) in the assembly position (M).

Description

The invention relates to the baiting of animals, in particular harmful rodents, using feeding bait for animals, in particular in a sewage system.

From the DE 20 2020 102 428 U1 a bait station is known, with a housing that is open at the bottom and airtight at the top in such a way that the water level in the housing is limited by the fact that an air bubble is enclosed in the upper area of the housing at correspondingly high water levels, and with one for receiving the bait specific bait holder, which is arranged within the housing, characterized in that the bait holder is designed as a buoyant bait bowl and the housing has water openings in the lower area, such that water can penetrate through the water openings into the housing and the bait bowl in the housing when the water level rises can float.

From the DE 20 2020 102 428 U1 a bait station is known, with a housing that is open at the bottom and airtight at the top in such a way that the water level in the housing is limited by the fact that an air bubble is enclosed in the upper area of the housing at correspondingly high water levels, and with one for receiving the bait specific bait holder, which is arranged within the housing, wherein the bait holder is designed as a buoyant bait bowl and the housing has water openings in the lower area, such that water can penetrate through the water openings into the housing and the bait bowl can float up in the housing when the water level rises.

From the DE 10 2014 102 034 A1 a device is known for holding a bait, in particular a bait for rodents, comprising: - a housing part that can be inserted into a duct, in particular a sewage duct or a cable duct, - at least one bait platform arranged in the housing part, which delimits at least one passage opening through which a rodent can reach a bait arranged on the bait platform and/or a bait held on at least one bait holding device arranged in the housing part, - at least one closing body which is movably mounted relative to the bait platform, the closing body being in an open position in such a way from the bait platform is moved away such that the at least one through-opening limited on the bait platform side is released, and in a closed position is moved towards the bait platform such that the at least one through-opening limited on the bait platform side is closed.

The object of the invention is to propose improvements in relation to the baiting of animals.

The object is achieved by a bait station according to patent claim 1. Preferred or advantageous embodiments of the invention and other categories of the invention result from the further claims, the following description and the attached figures.

The bait station serves or is set up to store a feeding bait for an animal. The feeding bait is in particular a poison bait for a harmful rodent such as a rat in a sewer.

The bait station includes a guide means. This extends along a longitudinal line at least from a bait area of the guide means to its maintenance area. In particular, the bait area and/or the maintenance area is a respective longitudinal end of the guide means in the longitudinal direction, ie along the longitudinal line, ie a bait end or a maintenance end. The guide means can be fixedly attached to a fixed structure so that—if attached—it is in an intended installation position on or relative to the fixed structure. The fixed structure is part of the environment of a bait location, which is to be baited by the eating bait or the bait station. For example, if the bait location is in a sewage system, e.g. in or on the edge of a sewer, the fixed structure is, for example, a ladder leading down from a street / surface of the earth into the sewer system or the wall of a vertical riser shaft, etc. The fixed structure is therefore an at least Operation of the bait station stationary structure, such as a wall of a riser shaft or a fixed ladder or the like mounted in this.

"Intended" means that the bait station is intended or intended for this assembly / fixation in the relevant assembly position, i.e. it is to be attached in accordance with the instructions for operation. Orientations (e.g. "top", "bottom" etc.) and properties (e.g. air bubble in the drying room, see below) of the (installed) bait station refer to this mounting position.

In the intended assembly position, the longitudinal line runs along the direction of gravity. The longitudinal line is in particular a straight line which then runs in the direction of gravity. "Along" the direction of gravity means in particular parallelism, with deviations from the gravity direction of force are tolerable as long as the desired effect (air bubble / dryness of the bait in the drying room, see below) occurs. In the mounted position, the bait area is located “below” on the guide means in the direction of gravity, i.e. below the maintenance area (further “up” on the guide means). For example, the longitudinal line can also run diagonally along a sloping staircase from "up" to "down" as long as the drying room always retains its orientation to the enclosure of the air bubble (see below).

The bait station includes a bait bell. The bait bell surrounds an interior space. In particular, the bait bell includes a housing that encloses the interior space. In particular, the bait bell does not contain any other essential components such as fixtures, containers for bait or the like. The bait bell or its housing has an access opening. The animal can get into the interior of the bait bell through the access opening. At least part of the interior, in particular the entire interior, is a drying room. The drying room has one--in particular a single---drying opening and is otherwise bell-shaped, airtight and watertight. The animal can get into or to the drying room through the drying opening. The drying opening is accessible to the animal from the access opening. In particular, the access opening and drying opening coincide when the interior corresponds to the drying space.

The bait bell has a holder for the bait in the drying area. The bait can be attached to the holder so that it can be placed or positioned in the drying room. The holder is attached to the bait bell itself, i.e. to its basic structure, housing, etc. This is not an insert different from the bait bell or something similar within the bait bell. The feeding bait attached or held to the bait bell is therefore inside the drying room. In a given drying room, the holder is in particular as far away as possible from the drying opening or arranged in such a way that a food bait intended to be held there is as far away from it as possible.

The bait bell is - in particular exclusively translational - constrained to be displaceable on the guide means. The bait bell can be moved along the longitudinal line between the bait area (a bait position) and the maintenance area (a maintenance position) on the guide means, at least between these, but in particular also beyond the maintenance area/position, but not beyond the bait area/position. The restricted guidance is also designed in such a way that, in the installed position, the drying chamber curves upwards in a bell-shaped manner from the access opening counter to the direction of gravity. In other words, the orientation of the drying chamber is constant in relation to the direction of gravity in the assembly position due to the forced guidance—regardless of the displacement position—so that the drying opening is at the bottom and the drying chamber extends upwards from this. According to the invention, there is the advantage that in the mounted position for each shifting position of the bait bell on the guide means, the air bubble is always kept in the drying space, even if the bait bell is completely or partially immersed under a water surface or is washed by water. In other words, due to the forced guidance, the bait bell always remains aligned vertically in the direction of gravity with respect to its bell-shaped drying space in order to fulfill the bell-like drying function.

The forced guidance is in particular purely translational, but can also have other degrees of freedom as long as it is ensured that in the assembly position the orientation of the drying chamber for holding the air bubble is maintained for all displacement positions along the longitudinal line.

The drying space therefore has at least an imaginary boundary surface in the form of the drying opening, from which it extends away in a bell-shaped closed manner (upwards in the installed position). The drying room is therefore only open at the interface.

The longitudinal line is therefore in particular a straight line and in particular a central longitudinal axis of the guide means, but can also contain curves or inclined passages. The decisive factor here is that the purpose of the forced guidance is maintained in connection with the bell-shaped shape of the drying room and when flushed with water in all displacement positions along the guide means the drying opening remains "below" and the drying room extends "above" this, so that the Feeding bait in the drying room stays dry in the air bubble and does not come into contact with water.

In the assembly position, the maintenance area is therefore at the top and in particular on or in the area of a ground surface, a street, a sidewalk, a building floor, etc. It is located in particular in the upper area of a vertical pipe leading down into the sewage system or belonging to it. / Inclined shaft of a sewage system. The bait area is located in particular at the bottom of a corresponding shaft. Especially at a baiting site where there are potentially animals to be baited. The fixed attachment is in particular a permanent fixed attachment.

The "bell shape" is to be understood broadly here and includes all shapes that enable the formation of an air bubble, ie also a cup shape, a cut torus shape or other shell-like shapes.

The bait bell can be detached in particular from the guide means, in particular in the maintenance area, in particular only there. This is used, for example, to replace the bait bell, to clean it or to equip it with a feeding bait. Guiding the bait bell on the guide means causes the guide bell to float up along the longitudinal line or the guide means due to the air bubble in the drying room when the water level rises, so that the water pressure on the bait bell does not increase excessively even when the water level rises sharply. In particular when used in a sewage system, the bait bell rises, for example, in a vertical shaft in which there is a comparatively weak current. The bait bell is thus removed from a strong flow area in the area of the bottom of the sewage system and is thus protected. The mass and buoyancy (air bubble) of the bait bell are therefore coordinated with one another so that there is sufficient buoyancy in the surrounding water. The net mass is also sufficient to move the bait bell back to the end of the bait purely by gravity when the water level drops.

Since there is always an air bubble in the bell-shaped drying chamber, the bait stays dry and can be used to bait animals again even after the water level has dropped. The bait bell on the guide means is lowered automatically by the effect of gravity on the bait bell. The ascent automatically by flushing with water and buoyancy of the air pocket in the drying room. The bait bell can be designed as a simple cup-like capsule.

The bait station according to the invention manages with few and very simple components and is therefore particularly simple and robust and can therefore also be implemented cost-effectively.

In a preferred embodiment, the guide means is a guide tube and the bait bell is received within and constrained within the tube. The guide tube is in particular round, ie it has a circular cross-section in the longitudinal direction and is in particular a straight tube. The forced guidance is brought about in particular by sliding the bait bell on the inner wall of the guide tube (piston in a tube, axial guidance). A guide tube of this type is particularly easy to produce and protects the bait bell guided inside from damage. The tube does not have to be a tube that is completely closed on the lateral surface, but can also have openings. A tubular guide grid/guide cage, for example in the form of guide rods arranged like a tube, is also conceivable.

In a preferred embodiment, the guide pipe is formed from a commercially available drain pipe or from a plurality of such pipes joined together along the longitudinal line. In particular, these are so-called HT pipes, e.g. with a diameter of DN 100 / DN110, e.g. made of PVC, in particular straight drain pipes. If there are several pipes, they are each plugged together at the usual sockets on one end. The pipes that are plugged together result in circumferential grooves on the socket on the inner circumference, in particular when a seal (annular, sealing lip) that is commercially supplied is removed from the sockets. The grooves thus form latching elements (see below) in the form of an annular groove set back radially outwards. The socketless front end of the inserted tube then forms a stop shoulder. A detent functionality (climbing lock) on the part of the guide means can therefore be implemented particularly easily or is provided automatically without special action. This is explained in more detail below.

In a preferred embodiment, the bait bell is cylindrical in the radial direction with respect to the longitudinal line towards the guide means, in particular in the manner of a right circular cylinder. In this case, the guide means can also run inside the bait bell, ie the latter can be designed in the manner of a sleeve surrounding the guide means. The bell shape of the drying room then degenerates, for example, into a shape in the manner of a cut torus. In particular in connection with a guide tube, the bell can form a straight circular cylinder section overall. This then has, for example, conically rounded longitudinal ends that taper without kinks, i.e. similar to the shape of a standard beverage can, for example. An axial or purely translatory piston-cylinder guide thus results in particular for the positive guide. The access opening/drying opening is in particular flat and is located on the front side and is circular (at the bottom in the installed position). This results in particularly simple embodiments for the bait bell.

In a preferred embodiment, the forced guidance is thus accomplished in that the bait bell has a piston-shaped fitting section with respect to the guide means. Particularly in the case of a guide tube, the bait bell has a slightly smaller cross section than the guide tube, i.e. it is connected by a Gap spaced with a gap width of, for example, at most 1%, 5% or 10% of the pipe cross section. Such forced guidance is particularly easy to implement and robust.

In a preferred embodiment, the bait station, in particular the guide means and/or the bait bell, has a sink lock. The sink lock is set up to prevent the bait bell on the guide means from sinking below a minimum height in or along the direction of gravity in the mounted position. Thus, an end position or lowest position of the bait bell is determined. It always returns to this due to the force of gravity or remains there as long as it is not, for example, surrounded by water and is not floating along the guide means. In particular, a suitable bait position for the bait bell can be found at the minimum height so that animals can be baited particularly well.

In connection with the guide tube, the sink lock also prevents, for example, the bait bell from escaping or falling out of the guide tube at its lower end. In the simplest case, the sinking lock can also be brought about by the bait bell touching down on a substrate below the guide means in the intended installation position. This is achieved by selecting the intended installation position in relation to the subsurface that is assumed to be known.

In particular, however, the bait station/bait bell guide means has a corresponding sink lock. In the event that the sink lock is achieved by the bait bell resting on a floor, the access opening can be provided on the side of the bait bell, particularly in the installed position, so that animals can always get into the bait bell in this case. If a corresponding guide tube also extends to a floor, for example, the guide tube can also have a corresponding opening so that animals can also reach the access opening in the bait bell through the guide tube.

In a preferred embodiment, the bait station, in particular the guide means and/or the bait bell, has a climb lock. The climbing lock is set up to prevent the bait bell from rising above a maximum height along the guide means or counter to the direction of gravity in the mounted position. Where applicable, the above statements on the sink lock apply accordingly to the climb lock. Deviating from the above, however, an excessive rising, floating or flushing out of the bait bell upwards from the guide means is to be prevented here, for example for particularly high water levels in a sewage system.

In a preferred variant of this embodiment, the climbing lock can be deactivated in such a way that the bait bell can be moved further upwards beyond the maximum height in the installed position, in particular to detach the bait bell from the guide means, for example for maintenance, repair or replacement purposes. In other words, for example, the bait bell can be removed from the tube opening of a guide tube in a maintenance area or a maintenance end of the guide means.

In a preferred variant of this embodiment, the climbing lock contains latching elements which are attached to the bait bell and to the guide means. The latching elements are directed to engage one another at least when the bait bell reaches the maximum height toward the service area. In the opposite direction, the latching elements can, for example, slide down beyond the relevant maximum height. Although it is possible to lower the guide bell on the guide means from above the maximum height downwards, it cannot be removed/flushed out upwards.

The latching element is in particular a latching element on the bait bell which is prestressed radially (inwardly or outwardly) towards the guide means with respect to the longitudinal line and which abuts slidingly on a surface (inner wall, outer surface) of the guide means. The guide means then has, as a latching element, a corresponding latching pocket which is set back radially inwards or outwards and which interacts with the other latching element. When the latching pocket is reached, the latching element latches there and forms a form fit that acts at least in the upward direction towards the maintenance area and prevents the bait bell from rising further. Such locking elements are particularly easy to implement.

In a preferred variant of this embodiment, the latching means attached to the bait bell has a pivot arm which can be pivoted about a pivot axis transversely to the longitudinal line and which in a ready position (e.g. extends obliquely away from the bait bell) slides with its free end on the guide means. The latching element attached to the guide means then has a radially set-back groove with a stop shoulder for the swivel arm acting in the direction of the maintenance area. The corresponding embodiment can be implemented in a particularly simple and cost-effective manner. Grooves in the guide means result, for example, from the nesting of tube segments on the ent speaking connection points automatically and therefore do not have to be provided separately.

In a preferred embodiment, the bait bell has a lid opening, which is different from the drying opening and allows access to the drying space. The bait bell also has a lid. The cover opening can be closed airtight and watertight by the cover. The lid is in particular a screw lid. In particular, the holder for the bait is attached to the lid. Replacing a feeding bait is particularly easy by opening the lid via the lid opening, in particular if the holder for the feeding bait is fastened or arranged on the lid itself. However, the functionality of the air bell in the drying room is retained by the sealing cover.

In a preferred variant of this embodiment, the cover opening is arranged on a side of the drying chamber opposite the drying opening. In the mounted position, the lid opening is located in particular at the top of the bait bell. In particular in the case of a cylindrical or piston-like bait bell, the cover or cover opening and drying opening/access opening are located on the respective end faces of the cylinder/piston. Drying and/or lid openings are in particular planar openings, in particular circular and in particular parallel to one another. Corresponding embodiments can be implemented in a particularly simple and cost-effective manner.

The object of the invention is also achieved by a bait system according to patent claim 13. The bait system contains the bait station according to the invention and the fixed structure. In the assembly position, the guide means is stationarily attached to the fixed structure.

The bait system and at least some of its possible embodiments and the respective advantages have already been explained in connection with the bait station according to the invention.

In a preferred embodiment, the bait station includes a lifting means. In particular, the bait station already contains the lifting means independently of the bait system, which then represents a preferred embodiment of the bait station.

The lifting means is set up at least to move the bait bell along the guide means towards the maintenance area when it is actuated. The lifting means is in particular also set up as a lowering means in order to lower the bait bell along the guide means to the bait area when it is actuated against. In particular, the lifting means interacts with the climbing lock and its actuation causes its deactivation. The climbing lock can therefore be deactivated in particular by actuating the lifting means, that is to say the bait bell can be raised above the maximum height by the lifting means without further measures.

The lifting means can be actuated by an operator in particular in a grip area around the maintenance area of the guide means. In particular, there is an actuating element for a mechanical or electrical system, a crank, an operating knob/lever, etc. In the simplest case, the end of a traction cable is fixed there. "In the grip area" means in particular in a grip area, i.e. at a distance of less than 1.50 m, 1 m, 50 cm or 25 cm from the maintenance area, in particular directly on the guide means. By accessing the maintenance area/the upper end of the guide means, an operator can therefore not only insert or remove the bait bell there, but also find or operate the lifting means there. Maintenance work on the bait station is particularly easy to carry out.

In a preferred variant of this embodiment, the lifting means is a pull rope that can be fastened or is fastened to the bait bell. Here, "rope" is to be understood broadly and can include, for example, materials such as textile, plastic, metal, etc. The pull rope is attached in particular to the bait bell, in particular to the cover, in particular to the swivel arm. The latter can be designed in such a way that when the pull rope is pulled, the swivel arm also lifts off the guide means and the bait bell can be pulled up without the swivel arm being able to engage in a locking element of the guide means. For example, there is an eyelet for the pull rope on the lid.

• 1 ein Kanalisationssystem mit Köderanlage in einer schematischen Prinzipskizze,
• 2 eine alternative Köderstation mit Köderglocke auf Minimalhöhe
• 3 die Köderstation aus 2 mit Köderglocke auf Maximalhöhe.

Further features, effects and advantages of the invention result from the following description of a preferred exemplary embodiment of the invention and the attached figures. Show, each in a schematic principle sketch:

• 1 a sewage system with a bait system in a schematic outline sketch,
• 2 an alternative bait station with bait bell at minimum height
• 3 the bait station off 2 with bait bell at maximum height.

1 shows a highly simplified section of a public sewage system 2. This is located below a street 4 or the earth's surface. There is an opening 12 in the street 4. A riser shaft 8 extends vertically downwards from the street 4 or the opening 12 in the direction of gravity 10. The opening 12 is normally closed by a manhole cover 6, which can be removed for maintenance purposes, so that a person can climb down through the riser shaft 8, ie in the direction of gravity 10, into the sewage system 2. The riser shaft 8 is several meters deep and ends at its lower end at a floor 14 of the sewage system 2.

At the level of the floor 14 there is a sewage pipe 16 which runs essentially horizontally below the road 4 at a depth of several meters and is used to conduct waste water 18 . There are potentially animals 20 in the sewer pipe 16 or on the floor 14, here rodents in the form of rats, which are to be combated as harmful rodents. In the present case, this is to be done by baiting with a feeding bait 22, here a poisoned bait that kills the animal 20 when eaten.

The feeding bait 22 is to be placed in the sewage system 2 in such a way that it can be reached by the animal 20, i.e. in particular in the vicinity of the floor 14. The problem is that the sewage pipe 16 is massively flushed with water in certain cases, for example in heavy rain, a water level 24 of the waste water 18 thus rises against the direction of gravity 10 and in this way a part of the sewer pipe 16 or even part of the riser shaft 8 or even the entire sewerage system 2 up to the manhole cover 6 is washed over. Different variants are symbolized in the figure by three dashed water levels 24 . Without special measures, the feeding bait 22 would at least get wet and thereby be destroyed or simply washed away.

To remedy this, a bait system 30 is installed in the sewage system 2, which serves or is set up to bait the animals 20 with the feeding bait 22. The bait system 30 includes a bait station 32 and a fixed structure 34. The fixed structure 34 is formed here by a part of the sewage system 2, namely a vertical wall of the riser shaft 8. The bait station 32 includes a guide means 36 which is attached to the fixed structure 34 in a stationary manner. In the present case, this is accomplished in that the guide means 36 is fixed firmly and permanently in a mounting position M on the wall of the riser shaft 8, ie the fixed structure 34, with the aid of fixing means 38, which are not explained in any more detail. The guide means 36 is fixed in this way in the mounting position M or is fixed in this mounting position M on the fixed structure 34 .

The bait station 32 serves or is set up for storing the food bait 22 for the animal 20. The guide means 36 is part of the bait station 32 and extends along a longitudinal line 40, here a straight line. The mounting position M is characterized in that the guide means 36 is aligned in such a way that its longitudinal line 40 runs along, here in or parallel to, the direction of gravity 10 . In other words, the guide means 36 is mounted vertically in the riser shaft 8 on the wall thereof with respect to its longitudinal line 40 .

The guide means has a bait area 42, here the lower end of the guide means 36 in the assembly position M. It also has a maintenance area 44, here the other opposite end of the guide means 36, which is the upper end in the assembly position. The mounting position M is also characterized in that the bait area 42 is located at the bottom in the direction of gravity 10 and the maintenance area 44 is at the top.

The guide means 36 can therefore be fixedly attached to the fixed structure 34 in the installation position M and is actually attached here in such a way that the longitudinal line 40 runs along, here parallel to, the direction of gravity 10 and the bait area 42 is located below the maintenance area 44 in the direction of gravity 10.

The bait station 32 further includes a bait bell 50. The bait bell 50 surrounds an interior space 52 of the bait bell. The bait bell 50 has an access opening 54 therein. The animal 20 can enter the interior space 52 of the bait bell 50 through the access opening 54 . The interior space 52 contains a drying space 56 which is identical to or coincides with this space here. Drying room 56 includes a drying port 60 which also coincides with access port 54 here. The entire drying space 56 is designed to be airtight and watertight in the shape of a bell. The drying opening 60 and thus also the drying room 56 can be reached by the animal 20 through the access opening 54 . In other words, the animal 20 can at least partially enter the interior space 52 through the access opening 54 and the drying space 56 through the drying opening 60, for example by stretching its front body/head into it. The bell shape here is an inverted cup shape with the cup opening as a drying opening 60 in the direction of gravity 10 below. Except for the cup opening, the cup is completely air and watertight.

The bait bell 50 itself, ie its basic structure or housing, has a holder 58 which is arranged in the interior space 52 or in the drying space 56 . The holder 58 is used to hold the bait 22 and is designed here as a holding eyelet 59 or ring eyelet. So the holder 58 is the Feeding bait 22 can be attached in the drying room 56, attached here. In the present case, this is represented by threading in and knotting a fastening cord belonging to the feeding bait 22, which is not explained further.

The bait bell 50 is forcibly guided on the guide means 36 in such a way that it is mounted here on the guide means 36 so that it can be displaced purely translationally along the longitudinal line 40 . The restricted guidance is designed in such a way that the bait bell 50 can be displaced between the bait area 42 and the maintenance area 44 . The restricted guidance is also designed such that in the assembly position M of the bait station 32, in particular the guide means 36 and the bait bell 50, the drying chamber 56 curves upwards in a bell-shaped manner from the drying opening 60 counter to the direction of gravity 10 in every displacement position. In other words, the drying opening 60 in the form of the opening of the cup or the bell (drying space 56) is always at the bottom in the direction of gravity 10. The drying chamber 56 therefore curves upwards in a bell-shaped manner from the drying opening 60 against the force of gravity in each displacement position as long as the bait station 32 is in the mounting position M.

The bait system 30 now has the following effect due to its structural design: In the normal case (water level 24 shown in solid lines), potentially occurring animals 20 can get in the direction of arrow 62 through the access opening 54 or drying opening 60 into the interior 52 and drying space 56 and from the feeding bait 22 eat, whereby the animals 20 are successfully fought. In case the water level 24 rises, the bait bell 50 is surrounded by water. Due to the mounting position M, an air bell forms in the bell-shaped drying chamber 56 . Penetration of water into the drying space 56 through the drying opening 60 is prevented or only minimally possible (low compression of the air in the interior 52 due to increasing water pressure). The feeding bait 22 located in the drying space 56 bis also remains dry. The bait bell 50 experiences buoyancy in the surrounding water as a result of the air/air bubble enclosed in an airtight and watertight manner in the drying space 56 and as a result moves as part of its forced guidance along the guide means 36 against the direction of gravity 10 along the longitudinal line 40 on the guide means 36 upwards. On the one hand, this prevents the water pressure on the bait bell 50 from increasing since it floats on the water at the height of the water level 24 . The water also penetrates into the guide means 36 in the form of the tube and thus raises the bait bell 50 further and further.

On the other hand, when the water level 24 rises massively, the bait bell 50 is removed from the strong flow area along the sewer pipe 16 and enters the riser shaft 8, in which there is usually a comparatively low flow. On the one hand, this protects the bait bell 50 from damage and mechanical stress and, on the other hand, the feeding bait 22 is additionally protected: With less current attack on the bait bell 50 and thus on the drying opening 60, less water splashes get into the drying space 56 and the The risk of the feeding bait 22 being hit by water splashes decreases.

When the water level 24 drops, the bait bell 50 sinks back down with it in the direction of gravity 10 due to the attack of gravity and finally gets back into the in 1 shown location. Animals 20 appearing again can thus, as described above, reach the still dry food bait 22 through the access opening 24 or drying opening 60 and be fought.

In the present case, the guide means 36 is a straight guide tube 64 with a circular cross-section and the bait bell 50 is designed approximately in the manner of a right circular cylinder and is accommodated within the guide tube 64 and (translationally in the manner of piston and cylinder) is positively guided in the guide tube 64. In order to achieve forced guidance, the bait bell 50 is designed here in the outward radial direction, that is to say with respect to the longitudinal line 40 towards the guide means 36, in a cylindrical shape. In other words, the outer shape of the bait bell 50 is cylindrical and slides along the cylindrical inner wall of the guide tube. In other words, the bait bell 50 has a piston-shaped mating portion 70 with respect to the guide means 36 . The fitting section 70 is the straight, circular-cylindrical lateral surface of the bait bell 50.

The bait station 32 has a sink dam 72 . This is set up to prevent the bait bell 50 from descending or lowering on the guide means 32 in the direction of gravity 10 below the in 1 shown minimum height HMIN to prevent. In the example, the sinking barrier 72 is formed in that an attachment sleeve 74 tapering conically away from the guide tube 64 is attached to the bait area 42 or the lower bait end of the guide tube 64 . When the minimum height HMIN in the direction of gravity 10 is reached, the bait bell 50 sits on the tapering attachment sleeve 74 . In the present case, the attachment sleeve 74 is also attached in such a way that it sits on the floor 14 and in the process supports the guide means 36 in the direction of gravity 10 so that it does not move can move further down. In order to allow the animal 20 access to the access opening 54 or drying opening 60, the attachment sleeve 74 itself has sleeve openings 76, which are not explained in detail.

Here the bait station 32 also has a climb lock 78 . This serves or is set up to prevent the bait bell 50 from rising above a maximum height HMAX in the guide tube 64 or on the guide means 36, for example if water also floods the entire riser shaft 8 (top water level 24 in 1 ). This prevents the bait bell 50 from being flushed out of the top of the guide means 36; so this cannot be lost. In the example, the climbing lock 78 is designed as a plug pin 80 which protrudes through the wall of the guide tube 64 into its interior and thus forms a mechanical lock for the bait bell 50 to rise. The plug pin 80 can be removed from the guide tube 64 in order to be able to detach the bait bell 50 from the guide means 36 at the maintenance area 44 or the maintenance end if desired, ie to be able to remove it from the guide tube 64 here. Climbing lock 78 can thus be deactivated by pulling plug pin 80 . Thus, the bait bell 50 can also be moved further upwards in the assembly position M beyond the maximum height HMAX and serviced or exchanged.

The bait system 30, here in particular the bait station 32, contains a lifting means 82. This serves or is set up to move the bait bell 50 along the guide means 36 against the direction of gravity 10 to the maintenance area 44 when it is actuated. In the present case, the lifting means 82 is a pull rope 84. Pulling on the pull rope 84 causes the lifting of the bait bell 50. In the present case, the pull rope 84 can also be used to lower the bait bell 50 in the direction of gravity 10 in a controlled manner along the guide means 36 downwards in the direction of gravity 10, in particular up to to the minimum height HMIN. The pull rope 84 is attachable to the bait bell 50 and is permanently attached there. It is fastened to a fastening means 86, here a fastening eyelet 88. The other end of the pull rope is fastened in the area of the manhole cover 6 in a gripping area of the opening 12, so that a maintenance technician can grip and operate the pull rope 84 from the road 4.

The bait bell 50 also has a cover opening 90 (here only indicated by dashed lines) which differs from the access opening 54 and the drying opening 60 . This permits access to the interior 52 or drying space 56 since the cover opening 90 is located entirely on the drying space 56 . The cover opening 90 can be closed airtight and watertight by a cover 92, which is also part of the bait bell 50. It is thus achieved that the drying space 56 continues to be airtight and watertight in the shape of a bell, with the exception of the drying opening 60, as soon as the cover 92 is placed on the cover opening 90 in an airtight and watertight manner.

In the present case, the holder 58 for the feeding bait 22 and also the fastening means 86 for the lifting means 82 are arranged or fastened on the cover 92 . In the present case, this is accomplished in a particularly simple manner in that a pin, not explained in any more detail, penetrates the cover 92 in an airtight and watertight manner, the pin having the fastening eyelet 88 and retaining eyelet 59 on its two opposite ends. The lid opening 90 is located on the opposite side of the access opening 54 with respect to the interior space 52 and on the opposite side of the drying opening 60 with respect to the drying chamber 56.

2 shows an alternative embodiment of a guide means 36 in the form of a guide pipe 64. This is composed here of several commercially available straight drain pipes (e.g. PVC-HT pipe, DN100), which are lined up or plugged into one another along the longitudinal line 40 and from which in 2 only the bottom two drain pipes 94a, b are shown as an example. The plugging into one another takes place with the aid of the sockets 96 or socket ends belonging to the drain pipes 94a,b. In 2 the sinking lock 72 is designed alternatively, namely analogously to the climbing lock 78 with plug pin 80 1 . Here, however, the plug pins 80 are alternatively firmly anchored in the drain pipe 94a and cannot be removed. An attachment sleeve 74 is not provided in this embodiment. Instead, the guide tube 64 is simply left open at the bottom in the assembly position M and is spaced far enough from the floor 14 that animals 20 can crawl under the guide tube 64 and reach the feeding bait 22 in the direction of the arrow 62 . The Bait Bell 50 is here compared to 1 designed somewhat differently in the upper area (in the mounting position M), namely with a larger cover opening 90 and a larger cover 92, so that it extends over the entire diameter of the bait bell 50.

Climbing lock 78 is also designed differently here: A first latching element 98 is provided on bait bell 50, and a second latching element 100 is provided on guide means 36. Latching elements 98, 100 are designed to engage with one another when bait bell 50 has reached the maximum height HMAX in Direction towards the maintenance area 44, ie against the direction of gravity 10, is reached. This is accomplished as follows: The latching element 98 on the bait bell 50 has two swivel arms 102 on, which are mounted on the bait bell 50, here on the cover 92, pivotable about a pivot axis 104 (running horizontally in the mounting position M). The pivot axis 104 thus runs transversely to the longitudinal line 40. In FIG 2 In the ready position SB shown, the pivoting arms 102 extend obliquely away from the bait bell 50, here obliquely upwards, and have their free ends 106 sliding on the guide means 36, here the inner wall of the guide tube 64.

The locking element 100 on the guide means 36 is a radially outwardly extending annular groove 108 with a stop shoulder 110 for the swivel arm 102 acting in the direction of the maintenance area 44. The groove 108 is formed by the drain pipes 94a, b being plugged into one another. A corresponding groove is automatically formed on the sockets 96 after they have been plugged together, since these expand radially in relation to the rest of the HT pipe. This applies in particular to the present case, since the otherwise customary lip seal on the HT pipes has been removed or left out here. The stop shoulder 110 is formed by the lower end of the drain pipe 94b in the assembly position M. The latching elements 100 thus result “by themselves” simply by plugging the commercially available drain pipes 94a,b together.

3 indicates 30 for the bait system 2 an increased water level 24, due to which the bait bell 50 floats and rises against the direction of gravity 10. The climbing lock 78 now acts as follows: the pivot arms 102 pivot in the direction of the arrows 112 about the pivot axis 104, since the free ends 106 penetrate into the groove 108 due to the force of gravity and are now in a latching position SR on the stop shoulder 110. A further rise of the bait bell 50 counter to the direction of gravity 10 above the maximum height HMAX is thus prevented.

The lifting means 82 in the form of the pull cable 84 is only indirectly attached to the bait bell 50 here, namely to the pivot arms 102. A pull on the pull cable 84 counter to the direction of gravity 10 therefore also causes the pivot arms 102 to pivot about the pivot axis 104 counter to the arrows 112 and 112 thus lifting of the free ends 106 from the inner sides of the guide tube 64. In this way, the climb lock 78 can be overcome in order to pull the bait bell 50 past it beyond the maximum height HMAX to the maintenance area 44.

Reference List

2

sewerage system

4

Street

6

manhole cover

8th

riser shaft

10

direction of gravity

12

opening

14

Floor

16

sewer pipe

18

sewage

20

animal

22

food bait

24

water level

30

bait system

32

bait station

34

fixed structure

36

means of guidance

38

fixer

40

longitudinal line

42

bait area

44

maintenance area

50

bait bell

52

inner space

54

access port (bait bell)

56

drying room

58

holder

59

retaining eyelet

60

drying opening

62

Arrow

64

guide tube

70

pass section

72

sink lock

74

attachment sleeve

76

sleeve opening

78

climb lock

80

pin

82

lifting gear

84

pull rope

86

fasteners

88

mounting eyelet

90

lid opening

92

Lid

94a,b

drain pipe

96

sleeve

98

locking element (bait bell)

100

locking element (guide)

102

swivel arm

104

pivot axis

106

free end

108

groove

110

stop shoulder

112

Arrow

M

mounting position

HMIN

Minimum height HMAXMaximum height

SB

ready position

SR

detent position

Claims (15)

Bait station (32) for storing a feeding bait (22) for an animal (20), - having a guide means (36) extending from a bait area (42) along a longitudinal line (40) to a maintenance area (44), - wherein the guide means (36) can be fixedly attached to a fixed structure (34) in an intended mounting position (M) in such a way that the longitudinal line (40) runs along the direction of gravity (10) and the bait area (42) extends in the direction of gravity (10) located below the maintenance area (44), - with a bait bell (50) surrounding an interior (52), the bait bell (50) having an access opening (54) for the animal (20) to the interior (52), at least part of the interior (52) being bell-shaped and airtight and is a watertight drying room (56) having a drying opening (60) which can be reached by the animal (20) from the access opening (54), - wherein the bait bell (50) in the drying space (56) has a holder (58) for the eating bait (22), to which the eating bait (22) can be attached in the drying space (56), - wherein the bait bell (50) is constrained to be guided along the longitudinal line (40) between the bait area (42) and the maintenance area (44) on the guide means (36) such that - In the assembly position (M), the drying space (56) curves upwards from the drying opening (60) in the shape of a bell against the direction of gravity (10). Bait station (32) after claim 1 , characterized in that the guide means (36) is a guide tube (64), and the bait bell (50) is received within the guide tube (64) and positively guided in it. Bait station (32) after claim 2 , characterized in that the guide pipe (64) is formed from one or more commercially available drain pipes (94a, b) joined together along the longitudinal line (40). Bait station (32) according to one of the preceding claims, characterized in that the bait bell (50) is cylindrical in radial direction with respect to the longitudinal line (40) towards the guide means (36). Bait station (32) according to any one of the preceding claims, characterized in that the forced guidance is effected by the bait bell (50) having a piston-shaped mating portion (70) with respect to the guide means (36). Bait station (32) according to one of the preceding claims, characterized in that the bait station (32) has a sinking lock (72) which is set up to prevent the bait bell (50) from sinking along the guide means (36) in the assembly position (M). to prevent the direction of gravity (10) below a minimum height (HMIN). Bait station (32) according to one of the preceding claims, characterized in that the bait station (32) has a climbing lock (78) which is set up to prevent the bait bell (50) from rising on the guide means (36) in the assembly position (M). to prevent the direction of gravity (10) above a maximum height (HMAX). Bait station (32) after claim 7 , characterized in that the climbing lock (78) can be deactivated in such a way that the bait bell (50) in the assembly position (M) can be moved further upwards beyond the maximum height (HMAX). Bait station (32) after one of Claims 7 until 8th , characterized in that the climbing lock (78) on the bait bell (50) and on the guide means (36) contains latching elements (98,100) which are designed to engage in one another at least when the bait bell (50) reaches the maximum height (HMAX) towards the maintenance area (44). Bait station (32) after one of Claims 7 until 9 , characterized in that the latching means (98) attached to the bait bell (50) has a pivot arm (102) which is pivotable about a pivot axis (104) transversely to the longitudinal line (40) and in a ready position (SB) with its free end (106) rests slidingly on the guide means (36). and the locking element (100) attached to the guide means (36) has a radially recessed groove (108) with a stop shoulder (110) for the swivel arm (102) acting in the direction of the maintenance area (44). Bait station (32) according to one of the preceding claims, characterized in that the bait bell (50) has a cover opening (90) different from the drying opening (60) as access to the drying space (56) and a cover (92) through which the cover opening (90) can be closed airtight and watertight. Bait station (32) after claim 11 , characterized in that the cover opening (90) is arranged on a side of the drying chamber (56) opposite the drying opening (60). Bait system (30) for baiting animals (20) with food bait (22), with a bait station (32) according to one of the preceding claims, and with the fixed structure (34), wherein the guide means (36) in the assembly position (M). the fixed structure (34) is fixed in place. Bait system (30) after Claim 13 , characterized in that the bait system (30) includes a lifting means (82) which is adapted at least to move the bait bell (50) along the guide means (36) towards the maintenance area (44) when it is actuated. Bait system (30) after Claim 14 , characterized in that the lifting means (82) is a pull rope (84) that can be fastened to the bait bell (50).

Images