The disclosure relates to oblong seals for sealing the threshold gap of up-and-over doors in buildings A) in order to avoid i) intrusion of pests especially rodents such as mice and rats and ii) influx of water and B) in order to control the physical atmosphere within a room behind the door by restricting air drafts and by reducing heat transfer so that the interior may be more effectively heated or cooled.
The disclosure also relates to assemblies of such seals and other products.
Rats and mice can transmit very dangerous contagious diseases, which can be transferred to humans e.g. via foods. Therefore, food enterprises are in many countries subject to one or more of the following requirements, which are aimed at reducing the risk for transfer of diseases to humans, when a rat or mouse has entered the premises of the food enterprise: A) The rat or mouse must be caught. B) All foods, which the rat or mouse may have been in contact with, must be destroyed. C) All parts of the enterprise, with which the rat or mouse may have been in contact, must be disinfected. D) The enterprise must close until the problem has been thoroughly solved.
Solving the problem is usually very costly and may run into several hundred thousand USD. Therefore, the annual losses due to rats and mice entering food enterprises are extremely high.
Rats and mice gnawing their way through door seals of up-and-over doors is a major problem. So is rats and mice passing through gaps left open by door seals, which are not sufficiently tight. Therefore, there is a substantial need for better and more rodent secure door seals for sealing the threshold gap of up-and-over doors.
Although the problem with rats and mice entering buildings through insufficiently sealed up-and-over doors has been known for more than a century it is still a very substantial problem.
“Up-and-over door” means a vertically opening and closing door such as an up-and-over door, an overhead door or a roll-up door.
“Door blade” when used in relation to an up-and-over door means the up and down moving blade, wing, panel or leaf of the door, which blocks the entryway, when the door is closed—both in cases, A) where the door blade is divided into sections, B) where the door blade is in the form of a single board, and C) where the door blade is in the form of a flexible material, which can bend and e.g. be rolled into a coil when the door is opened.
“Substructure” when used in relation to an up-and-over door means the part of the structure at floor level right under the underside of the door blade, when the door is closed—e.g. said underlying part of the floor, door sill, door saddle or ground.
“Threshold gap” when used in relation to an up-and-over door means the gap between the underside of the door blade in closed position and the substructure.
“Elongated metal members” means A) metal wires, including flexible multi stranded metal wires, such as braided or twisted wires and single stranded wires, B) narrow metal strips, and C) combinations of metal wires and narrow metal strips.
1st Aspect—A Door Seal for Rodent Proofing Up-and-Over Doors
According to a first aspect of the invention there is provided an oblong door seal for sealing the threshold gap of up-and-over doors in buildings e.g. in garages. The door seal comprises an outer material defining the form of the seal and a plurality of substantially parallel elongated metal members embedded in the outer material. The elongated metal members are arranged substantially in parallel to the longitudinal direction of the seal and at some distance to each other preferably arranged with a substantially equal spacing. The main purpose of the seal is to repel A) animals such as rodents including mice and rats B), insects, and C) water.
The seal may also help in controlling the physical atmosphere within a building by restricting air drafts and by reducing the heat transfer so one or more rooms in the building may be more effectively heated or cooled.
The door seal also serves as a shock absorber, which cushions and protects the door blade against damaging collisions with the substructure, when the door blade reaches its lowermost position during the closing of the up-and-over door.
The door seal comprises at least one oblong sealing section intended to seal the threshold gap. It may also comprise one or more the mounting sections, which are to be fastened to the door blade or to an adjacent surface. The door seal may comprise more than one sealing section. It may also comprise more than one mounting section. One or more mounting sections may be made of another material than one or more of the sealing sections and may be with or without the embedded elongated metal members. If so the material of the mounting sections in question may have a higher Shore A score e.g. an at least 4 points higher score or an at least 8 points higher score. At least one sealing section must be with an embedded barrier comprising a plurality of elongated metal members.
The purpose of the elongated metal members in the sealing section(s) is to secure against rodents such as rats and mice gnawing their way through the seal. The elongated metal members do in other words serve as a rodent proofing barrier.
The outer material may be made of one or more materials selected from: A) a polymer or plastic material, such as polyvinyl chloride, PVC, and/or a rubber material B) a polymer material, which may be a material comprising a natural polymer material such as rubber and/or a synthetic polymer material such as synthetic rubber or a thermoplastic material or a polyvinyl chloride, PVC, material, and C) a thermoplastic elastomer (TPE) such as a thermoplastic vulcanizate (TPV)—e.g. Santoprene™, such as Santoprene™ 201-73, Santoprene™ 201-80 or Santoprene™ 201-87.
The Shore A hardness score of the outer materials of at least one of the sealing sections may be 45-95 such as 60-93, such as 65-88 such as 70-87, such as about 78.
In order to use the door seal as a rodent proof door seal, the elongated metal members shall be dimensioned and made of a material, which rats and mice cannot bite their way through. Furthermore, the distance between the elongated metal members shall be so small, that rats or mice cannot pass between the elongated metal members and through the door seal after having gnawed off even a substantial part of the outer material.
At least 2 of the elongated metal members in the sealing section(s) may be arranged at a distance to the nearest elongated metal member (i.e. to the neighboring elongated metal member) which is no larger than 20 mm, such as no larger than 19 mm, such as no larger than 18 mm, such as no larger than 17 mm, such as no larger than 15 mm, such as no larger than 12 mm, such as no larger than 10 mm, such as no larger than 9 mm, such as no larger than 8 mm, such as no larger than 7 mm, such as no larger than 6 mm, such as no larger than 5 mm, such as no larger than 4 mm, such as no larger than 3 mm, or such as no larger than 2 mm. It is preferred that the distance between the neighboring elongated metal members is uniform.
At least 2 of the elongated metal members may be made of a selection of the following materials or alloys thereof: a) iron b) steel c) stainless steel d) spring steel e) welding wire filler metal such as 308L, 316L, 309L and 347 filler metal.
At least 2 of any elongated metal members in the form of wires may have a thickness or diameter of at least 0.4 mm, at least 0.6 mm, at least 0.7 mm, at least 0.8 mm, at least 0.9 mm, at least 1 mm, at least 1.1 mm, at least 1.2 mm, at least 1.3 mm, at least 1.4 mm, at least 1.5 mm, at least 1.6 mm, at least 1.7 mm, at least 1.8 mm, at least 1.9 mm, at least 2.0 mm, at least 2.1 mm, at least 2.2 mm, at least 2.4 mm, at least 2.7 mm, or at least 3 mm.
At least 2 of any elongated metal members in the form of metal strips may have a width of at least 0.6 mm, 0.8 mm, at least 1 mm, at least 1.5 mm, at least 2 mm, or at least 2.5 mm.
In a possible implementation form, the number of elongated metal members in at least one of the sealing sections of the door seal, is at least 2, such as at least 4, such as at least 6, such as at least 8, such as at least 10, such as at least 12, such as at least 14, such as at least 16, such as at least 18, such as at least 20.
The door seal or the sealing section may be in the form of a blade seal, a bubble seal or another seal type. One or more of the sealing sections may be solid, while one or more may be hollow.
The door seal may be produced by a single extrusion process or in a single insert molding process, in which case the outer material, in which the elongated metal members are embedded, is made out of a single component—as opposed to e.g. a sandwich construction where several components have been joined. One material may be used for one part of the outer material and another material for another part of the outer material. If so, one of the materials must be provided by one or more inlets to the extrusion die or the mold while one or more other inlets must be used for providing the other material in such a way that the materials end up in the places, where they are desired to constitute the different parts.
When the door seal is extruded, the profile of the extruded door seal is determined by the design of the outlet part of the extrusion die. Each of the elongated metal members may be fed into the extrusion die in the same way as wires are fed into an extrusion die when producing plastic covered electric cables. The crosshead extrusion process which is widely used for coating wires and cables may be used.
2nd Aspect—A Substantially U-Shaped Door Seal for Rodent Proofing Up-and-Over Doors
In a possible implementation form of the door seal (101), there are at least 2 elongated metal members (102) in at least one mounting section (104). One purpose of the elongated metal members (102) in the mounting section (104) is to reinforce the section so it becomes possible to mount the door seal securely by means of screws with screw heads spanning over at least two neighboring elongated metal members embedded in the mounting section (104).
In a possible implementation form of the door seal (101) the cavity is suitable for holding a sensor A) which can detect obstacles e.g. the head of a person when the up-and-over door closes, and the door blade goes down, and B) when detecting such obstacles can trigger a stopping mechanism so the further downwards movement of the door blade is stopped.
The door seal (101) may be fastened to the door blade of the up-and-over door by means of double-sided tape, glue, screws, rivets or other fasteners. Before taping or gluing the door seal and/or the up-and-over door may be primed with a primer in order to improve the strength of the joint.
One side of a mounting section (104) may be provided with double sided tape which can hold the seal in place during the mounting process A) so the user does not need to use one hand for holding the door seal in place while mounting and B) the user can use both hands for handling tools, fasteners and—if the seal is to mounted with a separate mounting strip—a mounting strip.
One or more substantially blade-shaped wings may have no embedded elongated metal members. If so, the blade-shaped wings are sealing sections with no rodent proof barrier of elongated metal members.
There may be more than 2 sealing sections. If so, there may be more than one sealing section without an embedded barrier of elongated metal members, but there must be at least one sealing section with such a barrier.
The cross section of the door seal may have another basic shape than substantially U-shaped. It must, however, have at least one downwards pointing cavity and at least two downwards pointing sealing sections in the form of substantially blade-shaped wings.
The cross section of the door seal may measure 2-15 cm×2-15 cm, such as 3-10 cm×3-10 cm, such as 4-8 cm×4-8 cm, such as 5-6 cm×5-6 cm.
The thickness (horizontal measure on
The height (vertical measure on
The distance from the lowermost elongated metal member (102) in at least one of the sealing sections (103) to the lower edge of the sealing section may be in the range of 1-16 mm, such as 2-10 mm, such as 3-6 mm, such as 3-4 mm.
The distance from the uppermost elongated metal member (102) in at least one of the sealing sections (103) to the upper edge of the sealing section may be in the range of 1-16 mm, such as 2-10 mm, such as 3-6 mm, such as 3-4 mm.
The lower part of at least one of the sealing sections (103) may be made of a more flexible material with a lower Shore A score than the uppermost part of the sealing section in order to increase the flexibility and thereby the sealing properties of the sealing section (103). The difference in Shore A score may be at least 2, such as at least 4, such as at least 6, such as at least 8, such as at least 10, such as at least 12, such as at least 14, such as at least 16.
The ratio between the thickness (horizontal measure on
In a specific embodiment the substantially U-shaped door seal (101) is characterized by the following: The door seal has 2 sealing sections (103) and one mounting section (104) with a total width (horizontal measure on
3rd Aspect—A Substantially Square, Rectangular or Trapezoid Door Seal
In order to increase the flexibility of the lower part and thereby the sealing properties of the door seal the lower part of the sealing section (301, 302, or 303) may be rounded or pointed as shown on the sealing sections (304 and 305) in
The lower part of the sealing section (301, 302, or 303) may be made of a more flexible material with a lower Shore A score than the uppermost part in order to increase the flexibility of the lower part and thereby the sealing properties of the sealing section (301, 302 or 303). The difference in Shore A score may be at least 2, such as at least 4, such as at least 6, such as at least 8, such as at least 10, such as at least 12, such as at least 14, such as at least 16.
The ratio between the thickness of the uppermost part of the sealing section (301, 302 or 303) and the Shore A hardness score of the uppermost part of the sealing section may be so that the result of a multiplication of the thickness in mm by the Shore A score is a number in the range of 350-2,000, such as 400-1,500, such as 500-1,000.
The thickness (horizontal measure on
The height (vertical measure on
The distance from the lowermost elongated metal member (102) in the sealing section (301, 302, or 303) to the lower edge of the sealing section may be in the range of 1-16 mm, such as 2-10 mm, such as 3-6 mm, such as 3-4 mm.
The distance from the uppermost elongated metal member (102) in the sealing section (301, 302, or 303) to the upper edge of the sealing section may in the range of 1-16 mm, such as 2-10 mm, such as 3-6 mm, such as 3-4 mm.
The door seal may be fastened to the door blade of the up-and-over door by means of double-sided tape, glue, screws, rivets or other fasteners. Before taping or gluing the door seal and/or the up-and-over door may be primed with a primer in order to improve the strength of the joint.
One side of the door seal may be provided with double sided tape which can hold the seal in place during the mounting process A) so the user does not need to use one hand for holding the door seal in place while mounting and B) the user can use both hands for handling tools, fasteners and—if the seal is to mounted with a separate mounting strip—a mounting strip.
4th Aspect—A Door Seal with Added Features
Any number of and any combination of the above described features may be added to the door seal (101) of
A door seal with the abovementioned oblong attaching members (402) can be attached to the mounting strip (501) of
When a door seal with the abovementioned oblong attaching members (402) is mounted in the described way either directly on the underside of a door blade or indirectly via a mounting strip it is very easy and requires no tools to replace the door seal when it has been worn out or damaged.
One or more of the added features described above under item b, c, and d may in the same way be added to the door seals according to the 3rd aspect, likewise resulting in the creation of similar assemblies of door seals and brush strips.
5th Aspect—Bendable Blade Shaped Seals and Corresponding Mounting Strips
When bend as shown in
When bend and mounted as shown in
The mounting strip (603) may be mounted on the underside of a door blade, which have not been equipped with corresponding oblong mounting slots, so it becomes possible to attach the door seal to the door blade by means of the oblong mounting sections (602) despite the lack of corresponding slots on the underside of the door blade.
When the door seal is mounted in the described way either directly on the underside of a door blade or indirectly via a mounting strip, it is very easy and requires no tools or fasteners to replace the door seal when it has been worn out or damaged.
The seal with the L-shaped mounting sections (602) can be mounted simply by A) compressing the seal a little (i. e. pressing the 2 L-shaped mounting sections towards each other), B) inserting the 2 L-shaped mounting sections into the corresponding L-shaped mounting slots (604) and C) releasing the seal so the sealing section (601) straightens out and thereby presses the 2 L-shaped mounting sections into the corresponding L-shaped slots. That is a lot easier than mounting a door seal with T-shaped mounting sections, that has to be dragged from one end of the corresponding T-shaped slots all the way to the other end—a hard task due to the substantial friction and a job that requires 2 persons dragging.
The mounting sections (702) are substantially parallel to the elongated metal members of the sealing section and the longitudinal direction of the door seal. There may be at least 1 such mounting section, such as at least 2, such as at least 3, such as at least 4.
A door seal with such mounting sections (702) can be attached A) to the mounting strip (703) of
The mounting strip (703) may be mounted on the underside of the door blade of an up-and-over door, which have not been equipped with corresponding oblong mounting slots, so it becomes possible to attach the door seal by means of the substantially T-shaped mounting sections (702) in spite of the lack of corresponding slots on the underside of the door blade.
When a door seal with the abovementioned oblong mounting sections (702) is mounted in the described way either directly on the underside of a door blade or indirectly via a mounting strip (703), it requires no tools to replace the door seal when it has been worn out or damaged.
The breadth of the door seals of
The following features may be added to the implementation forms of this 5th aspect:
6th Aspect—Assemblies of Door Seals and Mounting Strips
The 6th aspect is 3 different assemblies of A) door seals for up-and-over doors and B) mounting strips.
Firstly, it is an assembly of A) any of the doors seals of the 2nd and 3rd aspects equipped with one or more of the added features (401, 402, 403, 404 and 405) shown in
Secondly, it is an assembly of A) the door seal of the 5th aspect described in connection with
Thirdly, it is an assembly of A) the door seal of the 5th aspect described in connection with
7th Aspect—Assemblies Involving Door Seals and Door Blades of Up-and-Over Doors
The substructure (803) is shown by the lowermost horizontal line.
The door blade is shown in a semi-closed position.
The assembly may also comprise the mounting strip described in connection with
Instead of i) the door seal according to the 2nd aspect (101), ii) the sensor (401) described in connection with
One or more of the following 3 extra features of the 4th aspect described in connection with
Aspect—Methods for Rodent Proofing Up-and-Over Doors 8Th
The 8th aspect is a method for rodent proofing an up-and-over door comprising the step of mounting a door seal according to any of the implementation forms of the 1st, 2nd, 3rd, 4th and 5th aspects of the invention on the door blade of the up-and-over door.
Number | Date | Country | Kind |
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PA201800856 | Nov 2018 | DK | national |
This application is the U.S. National Stage of PCT/DK2019/050334 filed Nov. 5, 2019, which claims priority to Denmark Patent Application No. PA201800856, filed Nov. 13, 2018, the entire content of both are incorporated herein by reference in their entirety.
Filing Document | Filing Date | Country | Kind |
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PCT/DK2019/050334 | 11/5/2019 | WO | 00 |