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DE-202026101361-U1 - Device for protecting a rodenticide bait in a sewer

DE202026101361U1DE 202026101361 U1DE202026101361 U1DE 202026101361U1DE-202026101361-U1

Abstract

Device (1) for providing a rodenticide bait in a sewer, comprising a holding device (17) for receiving a bait, wherein the bait is freely accessible to rodents in a first position of the device (1), a protective device (7) designed to at least partially enclose the bait, a release mechanism actuated by a rising water level, wherein the protective device (7) is held in an open position in the first position by a retaining element (15), and wherein the release mechanism comprises a float (6) which releases the retaining element (15) when the water level rises, so that the protective device (7) is automatically moved into a closed position in which the bait is shielded from the surrounding water.

Assignees

  • ALTENDORF PAUL
  • KLEINLOGEL BJOERN

Dates

Publication Date
20260513
Application Date
20260311
Priority Date
20260311

Claims (18)

  1. Device (1) for providing a rodenticide bait in a sewer, comprising a holding device (17) for receiving a bait, wherein the bait is freely accessible to rodents in a first position of the device (1), a protective device (7) designed to at least partially enclose the bait, a release mechanism actuated by a rising water level, wherein the protective device (7) is held in an open position in the first position by a retaining element (15), and wherein the release mechanism comprises a float (6) which releases the retaining element (15) when the water level rises, so that the protective device (7) is automatically moved into a closed position in which the bait is shielded from the surrounding water.
  2. Device (1) according Claim 1 , characterized in that the protective device (7) comprises a base body (2).
  3. Device (1) according Claim 2 , characterized in that the base body (2) is designed as a hollow body which has an upper end region (3) and a lower end region (4) axially spaced therefrom, wherein the lower end region (4) is designed to be at least partially permeable to water.
  4. Device (1) according Claim 3 , characterized in that the float (6) is arranged in the cavity (5) of the base body (2) and is axially movable along a longitudinal axis of the base body (2).
  5. Device (1) according to one of the Claims 2 until 4 , characterized in that the holding device (17) for the bait is arranged on the base body (2).
  6. Device (1) according Claim 5 , characterized in that the holding device (17) is detachably or replaceably attached to the base body (2).
  7. Device (1) according to one of the preceding claims, characterized in that the retaining element (15) is designed as a lever.
  8. Device (1) according Claim 7 , characterized in that the retaining element (15) is arranged at the upper end region (3) of the base body (2).
  9. Device (1) according Claim 7 or 8 , characterized in that the retaining element (15) projects at least partially through a perforation (14) of the base body (2) into the cavity (5).
  10. Device (1) according to one of the preceding claims, characterized in that the protective device (7) comprises at least one protective body (8, 9) which is movable between an open position in which the bait is accessible and a locked position in which the protective body (8, 9) at least partially encloses the bait.
  11. Device (1) according Claim 10 , characterized in that the protective body (8, 9) is pre-tensioned in the direction of the locking position by a spring force.
  12. Device (1) according Claim 11 , characterized in that the protective body (8, 9) is held in the open position by the retaining element (15) against the spring force.
  13. Device (1) according Claim 12 , characterized in that the floating body (6) comes into effective contact with the holding element (15) at least partially during its movement.
  14. Device (1) according Claim 13 , characterized in that the holding of the at least one protective body (8, 9) is released by the effective contact of the float (6) with the retaining element (15).
  15. Device (1) according Claim 14 , characterized in that the at least one protective body (8, 9) is moved into the locking position after release by the retaining element (15) due to the spring force and encloses the bait.
  16. Device (1) according to one of the preceding claims, characterized in that the protective device (7) comprises two shell-shaped protective bodies (8, 9) which together define an interior space for receiving the bait.
  17. Device (1) according Claim 16 , characterized in that the protective bodies (8, 9) can be locked together in the locking position by a latching connection or a snap lock.
  18. Device (1) according Claim 17 , characterized in that at least one sealing element is arranged between the protective bodies (8, 9).

Description

The invention relates to a device for providing and protecting a rodenticide bait from contact with water in a sewage canal. Rats pose a significant hygiene and infrastructural problem, particularly in urban areas. A key habitat for rats is the sewer system of cities and towns. Here, the animals regularly find food scraps that enter the sewer system via wastewater or improperly disposed of food. From their nests outside the sewer, the animals regularly enter the sewer system in search of food. For this reason, rat control measures are often carried out directly within the sewer system. To control rats in sewer systems, rodenticide baits are primarily used. The baits are typically placed on or near the so-called embankment of a sewer shaft so that the animals can ingest them while foraging for food. In earlier methods, the baits were placed directly into the sewer or fixed in place with wire ties, making them accessible to the animals while still allowing for later removal. More recently, however, regulatory requirements for the use of rodenticides have become more stringent. In particular, efforts are being made to prevent active ingredients from the baits from entering the environment through contact with water. For this reason, various bait stations have been developed for use in canals, in which the bait is housed in a casing and is designed to be protected from contact with water as the water level rises. However, such bait stations have several disadvantages. Firstly, rats in the canal often don't readily accept closed bait stations, as they are generally accustomed to freely accessible food sources. Secondly, existing bait stations are often relatively large, heavy, and cumbersome to handle. Furthermore, debris in the canal, such as paper or other solids, can impair the functionality of such devices. Various devices for receiving or holding bait for rodents are known from the prior art. For example, the US 4,726,150 A bait station for rodents, in which a bait is arranged in a housing that can be entered via access openings and protects the bait from external influences. The US 5,566,483 The document discloses a bait station with a closed housing, inside which a rodenticide bait is arranged, with access to the bait being provided via entry openings for rodents. The EP 2 238 464 discloses a device for receiving a rodenticide bait, wherein the bait is held in a closed or partially closed structure to prevent uncontrolled access. Furthermore, the US 7,631,456 A bait station with a housing for holding a rodenticide bait, in which the bait is positioned inside a protective housing to protect it from external influences. All these solutions have in common that the bait is placed in a housing or station that the rodent must enter to reach it. However, such systems can lead to reduced bait uptake, particularly in canals. The invention is based on the objective of providing a device for supplying a rodenticide bait in a sewage canal, in which a bait for rodents can be offered in an easily accessible manner and at the same time prevents the bait from coming into contact with water when the water level rises. The problem is solved by the features of claim 1. Advantageous embodiments are described in the dependent claims. The invention relates to a device for delivering a rodenticide bait into a sewer. The device comprises a holding device for receiving the bait. The holding device is designed such that a rodenticide bait can be attached to or held on the device. In a first position of the device, the bait is freely accessible to rodents, so that it can be reached and ingested by rodents in the sewer. The device further comprises a protective device. The protective device is designed to at least partially enclose the bait. This allows the bait to be shielded from the surrounding water when the protective device is closed. In the first position of the device, the protective device is located in a open position, so that the bait is accessible. Furthermore, the device includes a trigger mechanism that is activated by a rising water level. The trigger mechanism comprises a float. The float is arranged such that it is moved by the buoyancy of the water when the water level rises. The safety device is held in the open position by a retaining element. The retaining element can, for example, be designed as a mechanical locking element that secures the safety device in the open position. The float is coupled to or associated with the retaining element in such a way that movement of the float due to a rising water level releases the retaining element. When the retaining element is released by the movement of the float, the safety device moves from the open position to a closed position. In this closed position, the safety device at least partially encloses the bait, thus shielding the bait from the surrounding water. This prevents the bait from coming into contact with water when the water level rises. The rodenticide bait