EP2800838B1 - Rattensperre - Google Patents

Rattensperre Download PDF

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Publication number
EP2800838B1
EP2800838B1 EP12805928.4A EP12805928A EP2800838B1 EP 2800838 B1 EP2800838 B1 EP 2800838B1 EP 12805928 A EP12805928 A EP 12805928A EP 2800838 B1 EP2800838 B1 EP 2800838B1
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EP
European Patent Office
Prior art keywords
closure member
closure
safety mechanism
bracket
lock member
Prior art date
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Active
Application number
EP12805928.4A
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English (en)
French (fr)
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EP2800838A1 (de
Inventor
Hans Knudsen
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Ratel Aps
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Ratel Aps
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Publication of EP2800838A1 publication Critical patent/EP2800838A1/de
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Publication of EP2800838B1 publication Critical patent/EP2800838B1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/06—Devices for restraining rats or other animals

Definitions

  • the present invention relates to a safety mechanism for a pest deterrent device of the type having two separate closure members pivotally suspended. Furthermore, the invention is also directed at a pest deterrent device comprising such a safety mechanism.
  • pests will typically be described with reference to rats or other rodents, and in particular rats that inhabit pipe systems such as for example sewers. It is, however, contemplated that the principles of the invention is also applicable in use for other pest deterrent devices where a combination of two separate closure members are used in order to stop the pests at a certain location.
  • rats in sewer systems are a large and growing problem which in addition to being considered very unclean and unsafe in that rats may spread diseases etc., also in many circumstances deteriorates the proper working of the sewer system.
  • DE 699005 a device which will allow water to flow in one direction where for example pests cannot travel in the opposite direction.
  • the device is provided with two suspended and pivotable closure members arranged at a certain distance. Above the point of pivoting each closure member is provided with a projecting part which projects towards the opposite closure member. Furthermore the size and position of the projecting members is arranged such that liquid flow in one direction will allow the closure members to pivot freely whereas attempts to pivot the closure members in an opposite direction will cause the projecting members to engage and thereby block the pivoting movement.
  • WO 2006/053562 describes a similar device where two closure members are suspended at a distance X.
  • the closure members may pivot.
  • the two closure members are interconnected by a closure mechanism which allows free pivotal movement in one direction whereas the locking mechanism hinders pivotal movement in the opposite direction. Consequently the device allows liquid to flow freely in one direction whereas pests such as rats travelling against the flow will be blocked from passing the device due to the locking mechanism.
  • the object of the present invention is therefore to provide an improved device of the type mentioned above having a simpler safety mechanism but still providing the ability of the liquid to pivot the closure members in a downstream direction and hinder movement of the closure members when the closure members are being accessed in an upstream direction.
  • the invention addresses this by providing a safety mechanism for pest deterrent devices and a pest trap according to the appended claims.
  • the mutual distance between the two closure members causes the portions of the closure members furthest away from the points where they are pivotally hinged to a construction to describe two separate, but overlapping circle sections.
  • the first closure member is provided with a lock member whereas the second closure member is provided with a bracket.
  • the bracket projects through slits arranged in the first closing member such that when the closure members are suspended in their rest position, i.e. not influenced by water-flow or by attempts to pivot the closure members in an upstream direction, the bracket is arranged through the slits on the side of the closure member where the lock member is also arranged.
  • the bracket will be arranged such that in the rest position the bracket will be spaced a few mm from the underside or edge of the lock member. If the first closure member is activated to pivot in a downstream direction, i.e. by action coming from for example a rat trying to pivot it where the rat comes from the upstream direction, the bracket will engage the lock member and thereby hinder any movement of the two closure members. This is due to the fact that the two circle sections will describe separate circle movements whereby the harder the pull is on the first closure member, the harder the bracket will engage the lock member and thereby hinder any movement. On the other hand, if a pushing action is applied to the first closure member, i.e. pushing the closure member towards the upstream direction the lock member's underside/edge will engage the bracket which then again will hinder movement of the first closure member.
  • the bracket will push on the underside of the lock member and at the same time slide relative to the lock member such that after a certain movement of the second closure member the bracket will become free of the lock member and thereby be able to swing freely as will be described below with reference to the accompanying drawing.
  • the principle of having two mutually spaced closure members which interact by means of a bracket and a lock member provides a simple and yet safe safety mechanism for pest deterrent devices such that they may operate in a manner for which they are designed.
  • two parallel slits are arranged and the lock member is arranged between said two slits, and that the bracket is generally U-shaped, where the distal ends of the U are fastened to the second closure member.
  • the U-shape of the bracket guided in two slits provides for a more rigid construction in that lateral displacement of the two closure members will not cause the safety mechanism not be active or be able to activate its locking in that any lateral movement of one or the other of the closure members will due to the arrangement of the bracket in the slits keep the bracket in its correct position relative to the lock member.
  • the distance between the two closure members is between 10 and 50 mm, preferably between 15 and 25 mm.
  • the circle sections provide adequate and sufficient spacing in order for the circle sections as mentioned above to provide the effective locking mechanism in order to provide the safety mechanism with sufficient reliability such that it is always ensured that the bracket will engage the lock member as desired.
  • the closure members have a size and shape substantially corresponding to 65% to 90% of the cross-sectional shape of the pipe into which the safety mechanism is intended to be installed.
  • the size of the closure members will be selected such that they do block a substantial part of the cross-sectional opening of the pipe, but will still allow liquid and air to pass the safety mechanism without necessarily activating said safety mechanism. Therefore, a certain free-space is desirable around the edges of the closure members. On the other hand this free space should not be such that pests are able to pass the safety mechanism simply by crawling through the free space.
  • a stop is provided adjacent the second closure member on the opposite side to the first closure member, where said stop hinders the pivotal movement of the second member away from the first closure member.
  • the second closure member can only pivot very slightly in the upstream direction such that any pushing action on the first closure member in the upstream direction will not be able to open the safety mechanism due to the stop.
  • the same safety is provided by a different feature, namely in that a projection is provided on the first closure member facing the second member, or on the second member facing the first member, such that as the first member pivots towards the second member, the projection will engage the opposite closure member and pivot said opposite closure member, until the bracket engages the lock member.
  • the projection engages the other closure member due to an upstream pivotal movement of the first member, the second member will pivot correspondingly thereby maintaining the bracket's position relative to the lock member whereby the bracket will engage the lock member's under-edge and thereby as already explained above mutually lock the two closure plates relative to each other and thereby hinder any access past the safety mechanism.
  • the invention is also directed to a pest deterrent device comprising means for installing the device inside or partly inside a pipe or conduit in which pests may be present, where the means comprises a plate member suitable to be arranged against an upper part of the pipe, where said plate member comprises means for pivotally suspending the safety mechanism according to any of claims 1 to 4 in the pipes' cross-section.
  • the device is made from a polymer material comprising a resin and optionally fibres and/or glass-fillers.
  • a polymer material comprising a resin and optionally fibres or glass-fillers it is possible to use relatively cheap moulding processes which will bring the overall price of the device down in comparison to traditional materials.
  • the polymer materials comprising a resin and especially glass-fillers have shown to be tough and resistant enough such that especially rats will not be able to chew their way through the material.
  • the device is made from a non-corroding metal, such as stainless steel, aluminium or the like.
  • a non-corroding metal such as stainless steel, aluminium or the like.
  • these devices are made from stainless steel which exhibits exceptionally good resistance against corrosion which is very important in the severe, hard and aggressive environments into which devices of this type are arranged.
  • the invention is also directed at a pest trap incorporating the inventive safety mechanism wherein said closure members of the safety mechanism are suspended from a lower portion of a trap where said trap comprises means for exterminating said pest in a tunnel provided in said trap.
  • the pest As the safety mechanism blocks the pest's progress along the bottom of the pipe or conduit, for example a sewer, the pest, especially a rat, will try to circumvent the safety mechanism and its closure members.
  • the safety mechanism where said trap incorporates a tunnel the rat will climb up into the tunnel and thereby enter a pest trap.
  • the pest trap may for example be a trap of the type disclosed in the same applicant's prior patent application WO 2010130262 or Danish patent application (yet to be published) PA 2011 70336 .
  • This combination of the safety mechanism according to the present invention and the trap provides a complete system such that not only will the system deter rats from progressing in the pipe/conduit, but any rat attempting to pass the safety mechanism will have to enter the trap and thereby be killed.
  • FIG 1 is illustrated a view of the safety mechanism 1 where the first closure member 10 and the second closure member 20 is in a position where they are suspended substantially vertically.
  • a bracket 21 which bracket in this embodiment has a general U-shape such that both distal ends/free ends of the U are fastened to the second closure member.
  • the U-shaped bracket 21 is arranged in two slits 11, 12 arranged in use substantially vertically in the first closure member 10.
  • a lock member 13 Perpendicular to the plane of the first closure member 10 is arranged a lock member 13. The lock member will be described in more detail with reference to figure 4 , see below.
  • the two closure members 10, 20 are pivotally suspended from members 31, 32 which members 31, 32 are a part of a mounting arrangement 30, see figure 3 , for arranging the safety mechanism for example in a sewer system or other conduit system where it is desirable to block the passage of pests and in particular rats from entering the pipe or conduit system.
  • Both closure members 10, 20 are freely pivotal such that they may pivot independently of each other and furthermore the lowermost sections 22, 14 of the closure members 10, 20 will, as they are arranged with a horizontal distance X describe two intersecting sections of a circle. This movement, and thereby also the distance X is very important in that it determines the bracket's 21 movement with respect to the lock member 13.
  • the first and second closure members have been pivoted into a substantially horizontal position whereby the bracket 21 due to the difference in circular sections of the first closure member 10 and the second closure member 20 the bracket 21 has passed the lock member 13 and moved into the position as illustrated with reference to figure 2 .
  • the second closure member 20 may fall back until the bracket 21 engages the surface of the closure member 10, or if both closure members 10, 20 are pivoting back into the position as illustrated with reference to figure 1 the bracket 21 will at some point engage the lock member 13 and due to the oblique angle of the upper part of the lock member, see figure 4 , the bracket and thereby the second closure member will slide along the lock plate until it comes into the position as illustrated with reference to figure 1 .
  • FIG 3 is furthermore illustrated means 30 for installing the device 1 in a sewer or conduit.
  • the means for installing the safety device 1 according to the invention will typically include a mounting tool 60 which may be detached from the bracket 31 in such a manner that by choosing a mounting tool 60 having a correct length it is possible to insert the device 1 into a manhole and by manipulating the mounting tool 60 the bracket may be inserted at least partly into a pipe opening.
  • FIG 4 is illustrated a detail of the lock member 13 in engagement with a portion 23 of the bracket.
  • the lock member 13 comprises a plate section 40 arranged substantially orthogonal to the plane of the first closure member 10 where the plate member 40 in this embodiment has a triangular shape such that the lowermost edge 41 is substantially perpendicular to the plane of the first closure member 10. In this manner the portion of the bracket 23 will have to slide along the lower edge 41 before the bracket is free of the lock member 13 and thereby the second closure member may pivot independently of the first closure member.
  • the plate member 40 is provided with an oblique edge 42 such that as the bracket portion 23 comes into contact with the lock member 13, the bracket portion 23 will slide along the oblique edge 42 until it may move free of the plate member 40 and come to rest in the position as illustrated with reference to figure 4 .
  • the lock member 13 with different edges.
  • the top edge 42 be a curve either convex or concave as could the lower edge 41 as long as they together provide guidance for the portion of the bracket 23 such that they will achieve either the self-locking position illustrated in figure 1 when the first closure member is urged to the right in the picture and allow the portion of the bracket to slide along the upper edge 42 in order for the second closure member 20 to achieve the position illustrated in figures 1 and 4 .
  • fig. 4a is the illustration of fig. 4 provided with a coordinate-system, defining x, y and z-axis, such that the closure members 10,20 substantially are arranged in respective parallel x-y planes, and the lock member 13 arranged in a y-z plane orthogonal to the x-y plane.
  • the relative position, especially of the lock member 13 relative to the bracket 21, and in particular the portion of the bracket 23 overlapping the plane (z-y) of the lock member is clearly defined.
  • a stop 50 is provided, see figure 5 .
  • the stop 50 is arranged adjacent the second closure member 20 such that the second closure member 20 may pivot in the downstream direction, i.e. towards the left in figure 5 , whereas the stop hinders pivotable movement towards the right in figure 5 , i.e. in the upstream direction. Therefore, any pushing action on the first closure member 10 will force the first closure member 10 into contact with the second closure member 20, but due to the provision of the stop 50 the pivotable movement of the closure members will be stopped.
  • the safety mechanism 1 is illustrated in connection with a trap 70 where said trap 70 is mounted above the closure members 10, 20 such that a rat trying to move from the left towards the right in figure 6 will be forced up and into the trap 70 as the closure members 10, 20 blocks the passage in the pipe/conduit (not illustrated for clarity reasons).
  • the trap 70 is in this example identical to applicant's prior patent application PA 2011 70336 where a tunnel is provided inside the trap 70.
  • Means 71 for electrically detecting and controlling the trap are provided on top of the trap.
  • the trap 70 is designed to be mounted in a manhole whereas the safety mechanism provided with a plate member 32 is designed to be inserted into a pipe opening whereby the closure members 10, 20 suspended from the plate member 32 will substantially block the cross section of the sewer pipe.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Catching Or Destruction (AREA)

Claims (9)

  1. Sicherheitsmechanismus für Schädlingsabschreckungsvorrichtungen, wobei der Mechanismus zwei separate Schließelemente (10, 20) umfasst, die bei Verwendung drehbar von der Schädlingsabschreckungsvorrichtung hängen und voneinander in einer horizontalen Entfernung (X) angeordnet sind, wobei der Zweck der beiden Schließelemente (10, 20) darin besteht, den Durchlass von Schädlingen in eine Richtung - die vorgelagerte Richtung - zu verhindern und es den Schließelementen (10, 20) zu ermöglichen, sich in die entgegengesetzte Richtung - die nachgelagerte Richtung - zu drehen, um nachgelagert einen flüssigen Strom an dem Sicherheitsmechanismus vorbei zu ermöglichen, wobei der Mechanismus ferner einen Stopper (50) umfasst, der neben dem zweiten Schließelement (20) auf der entgegengesetzten Seite des ersten Schließelements (10) vorgesehen ist, dadurch gekennzeichnet, dass das erste Schließelement (10) auf der nachgelagerten Seite mit einem oder mehreren Schlitzen (11, 12) versehen ist, wobei neben dem mindestens einen Schlitz (11, 12) ein Verschlusselement (13) angeordnet ist, wobei das Verschlusselement (13) in eine Fläche (y-z) herausragt, die im Wesentlichen orthogonal zu der Fläche (x-y) des ersten Schließelements (10) ist, und zwar in eine Richtung, die vom zweiten Schließelement (20) wegführt, das dem ersten Schließelement (10) vorgelagert vorgesehen ist, wobei das zweite Schließelement (20) mit einer Halterung (21) versehen ist, wobei die Halterung (21) durch den mindestens einen Schlitz (11, 12) im ersten Schließelement (10) ragt, wobei die Halterung (21) einen Abschnitt (23) aufweist, der die Fläche (y-z) des Verschlusselements (13) überschneidet, wobei das Verschlusselement (13) einen niedrigsten Rand (41) aufweist, der im Wesentlichen parallel zu der z-Achse ist, und zwar so, dass bei Verwendung das zweite Schließelement (20) sich in Richtung des ersten Schließelements (10) dreht, wobei der Abschnitt (23) der Halterung (21), der die Fläche (y-z) des Verschlusselements (13) überschneidet, entlang des niedrigsten Rands (41) gleitet, bis die Halterung (21) auf dem zweiten Schließelement (20) vom Verschlusselement (13) befreit ist, und ferner, wenn das erste Schließelement (10) im Verhältnis zum zweiten Schließelement (20) zu der nachgelagerten Seite gedreht wird, der Abschnitt (23) der Halterung, der die Fläche (y-z) des Verschlusselements überschneidet, in Eingriff mit dem niedrigsten Rand (41) des Verschlusselements (13) gelangt und die Drehbewegung der beiden Schließelemente (10, 20) blockiert, und der Stopper (50) durch Drücken des ersten Schließmitglieds (10) in Richtung zweites Schließelement (20) die Drehbewegung beider Schließelemente (10, 20) zur vorgelagerten Seite hin hindert.
  2. Sicherheitsmechanismus nach Anspruch 1, dadurch gekennzeichnet, dass zwei parallele Schlitze (11, 12) in dem ersten Schließelement (10) angeordnet sind und das Verschlusselement (40) zwischen den zwei Schlitzen (11, 12) angeordnet ist, und dass die Halterung (21) allgemein U-förmig ist, wobei die fernen Enden des U an dem zweiten Schließelement (20) befestigt sind.
  3. Sicherheitsmechanismus nach Anspruch 1, dadurch gekennzeichnet, dass die Entfernung (X) zwischen den beiden Schließelementen (10, 20) zwischen 10 und 50 mm liegt, vorzugsweise zwischen 15 und 25 mm.
  4. Sicherheitsmechanismus nach Anspruch 1, dadurch gekennzeichnet, dass die Schließelemente (10, 20) bei Verwendung eine Größe und eine Form aufweisen, die im Wesentlichen 65 % bis 90 % der Querschnittsfläche eines Rohrs entspricht, in dem der Sicherheitsmechanismus installiert werden soll.
  5. Sicherheitsmechanismus nach Anspruch 1, dadurch gekennzeichnet, dass ein Vorsprung auf dem ersten Schließelement (10) gegenüber dem zweiten Schließelement (20) bereitgestellt ist, oder auf dem zweiten Schließelement (20) gegenüber dem ersten Schließelement (10), sodass, wenn das erste Schließelement (10) sich in die Richtung des zweiten Schließelements (20) dreht, der Vorsprung in das entgegengesetzte Schließelement eingreift und das entgegengensetzte Schließelement dreht, bis die Halterung (21) in das Verschlusselement (13) eingreift.
  6. Sicherheitsmechanismus für Schädlingsabschreckungsvorrichtungen nach einem der vorangehenden Ansprüche, Mittel zum Installieren des Sicherheitsmechanismus in oder teilweise in einem Rohr oder einer Leitung umfassend, in dem bzw. in der sich Schädlinge befinden könnten, wobei das Mittel ein Plattenelement (32) umfasst, das dazu geeignet ist, an einem oberen Teil des Rohrs anliegend angeordnet zu werden, wobei das Plattenelement (32) Mittel zum drehbaren Aufhängen des Sicherheitsmechanismus nach einem der Ansprüche 1 bis 4 im Querschnitt des Rohrs umfasst.
  7. Sicherheitsmechanismus für Schädlingsabschreckungsvorrichtungen nach Anspruch 5, wobei der Sicherheitsmechanismus aus einem Polymermaterial hergestellt ist, das ein Harz und wahlweise Fasern und/oder Glasfüller umfasst.
  8. Sicherheitsmechanismus für Schädlingsabschreckungsvorrichtungen nach Anspruch 5, wobei der Sicherheitsmechanismus aus einem nichtkorrosiven Material gefertigt ist, wie zum Beispiel Edelstahl, Aluminium oder ähnlichem.
  9. Sicherheitsmechanismus für Schädlingsabschreckungsvorrichtungen nach einem der Ansprüche 1 bis 8, wobei die Schließelemente (10, 20) des Sicherheitsmechanismus von dem unteren Teil der Falle hängen, wobei die Falle Mittel zur Vernichtung des Schädlings in einem Tunnel (70) umfasst, der in der Falle bereitgestellt wird.
EP12805928.4A 2011-12-08 2012-12-06 Rattensperre Active EP2800838B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201170685 2011-12-08
PCT/DK2012/050447 WO2013083134A1 (en) 2011-12-08 2012-12-06 Safety mechanism for a pest deterrent device

Publications (2)

Publication Number Publication Date
EP2800838A1 EP2800838A1 (de) 2014-11-12
EP2800838B1 true EP2800838B1 (de) 2016-05-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12805928.4A Active EP2800838B1 (de) 2011-12-08 2012-12-06 Rattensperre

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EP (1) EP2800838B1 (de)
DK (1) DK2800838T3 (de)
WO (1) WO2013083134A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6566766B2 (ja) * 2015-07-27 2019-08-28 日之出水道機器株式会社 地下構造物用の害虫捕獲装置および害虫捕獲システム
WO2018224105A1 (en) * 2017-06-08 2018-12-13 Anticimex Innovation Center A/S A device for pests

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE699005C (de) * 1938-10-28 1940-11-21 Henry Nowak In ein Kanalstueck einzusetzende Rattensperre
DK1828498T3 (da) 2004-11-18 2009-06-22 Christian Thiim Spærreindretning for gnavere
WO2010130262A2 (en) 2009-05-13 2010-11-18 Envi-Con Aps Electronic pest eliminating device
US20110272052A1 (en) * 2010-05-05 2011-11-10 Niels Arne Lauridsen Rodent Guard

Also Published As

Publication number Publication date
DK2800838T3 (en) 2016-08-15
EP2800838A1 (de) 2014-11-12
WO2013083134A1 (en) 2013-06-13

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