GB2475238A - A sleeve for use with a fire arrester system on a partition wall - Google Patents
A sleeve for use with a fire arrester system on a partition wall Download PDFInfo
- Publication number
- GB2475238A GB2475238A GB0919598A GB0919598A GB2475238A GB 2475238 A GB2475238 A GB 2475238A GB 0919598 A GB0919598 A GB 0919598A GB 0919598 A GB0919598 A GB 0919598A GB 2475238 A GB2475238 A GB 2475238A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- sleeve
- fire
- collar
- partition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005192 partition Methods 0.000 title claims abstract description 27
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 229920003023 plastic Polymers 0.000 claims abstract description 7
- 239000013536 elastomeric material Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000009420 retrofitting Methods 0.000 claims description 2
- 239000012858 resilient material Substances 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000010439 graphite Substances 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 4
- 239000011796 hollow space material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004114 Ammonium polyphosphate Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 1
- 229920001276 ammonium polyphosphate Polymers 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010866 blackwater Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
- F16L5/04—Sealing to form a firebreak device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
- F16L5/10—Sealing by using sealing rings or sleeves only
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/065—Physical fire-barriers having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Building Environments (AREA)
Abstract
A fire arrester arrangement for a pipe 10 passing through a partition wall (shown partially broken away) comprises a fire collar 20 located on the partition with the pipe passing through the fire collar, and a flexible sleeve 26 having one end connected to the fire collar and the other end connected to the pipe. The sleeve / boot 26 serves to seal the pipe to the fire collar such that in the event of the pipe separating from the wall (e.g., due to the wall buckling in the heat), the fluid (arrows A, B) in the pipe is contained and does not leak out into the compartment. The sleeve may be made of an elastomeric material, and corrugated. The flexible boot 26 may be split enabling it to be retrofitted, and is preferably secured using worm-drive hose clips 34, 38. Ideally the partition wall having the fire-retarding arrangement is a bulkhead in a ship, with the pipe being plastic.
Description
A SLEEVE FOR USE WITH A FIRE ARRESTER SYSTEM
Field of the invention
This invention relates to a sleeve for use with a fire arrester system for a pipe extending through a bore in a partition, particularly but not exclusively to a sleeve for use with a fire arrester system for a plastics material pipe extending through a bore in a steel bulkhead of a ship.
Background to the invention
Plastics material pipes carrying a fluid such as water flowing therethrough are used in buildings. Such pipes extend through bores in partitions such as walls, floors and ceilings. In the event of a fire such pipes melt or collapse whereby the bore would provide a channel for the transmission of the fire or smoke or other products therefrom through that partition.
It is obviously important, in the event of a fire, that partitions remain able to contain the fire for as long as possible and fire collars are increasingly provided to ensure that any channel remaining by the melting or collapse of a pipe is blocked.
Generally, the fire collar comprises a metal collar fastened around the pipe, the collar enclosing intumescent material between the collar and the pipe. When fire causes the pipe to melt, it also causes the intumescent material to expand. The fire collar prevents expansion outwardly, so that the expansion of the intumescent material is inwardly to fill the void left by the melted pipe. In this way, a physical barrier is formed across the bore in which the pipe was arranged.
For example, international patent publication WO 97/04838 (J W Bollom & Co Ltd I Hoffman) describes a fire collar which is supported around a plastics material pipe extending through a bore in a wall. The fire collar comprises a cylindrical metal collar carrying a layer of intumescent material on its inner circumferential surface. A sleeve of fire resistant material is attached to the metal collar and extends within the collar and around the pipe. In the event of a fire the pipe melts.
As the temperature rises above a critical temperature, the intumescent material is constrained to expand radially inwardly and as it does so it pushes the fabric sleeve radially inwardly. The sleeve and the expanded intumescent material together form a physical barrier across the fire collar which blocks the bore.
When a fire is on one side of a bulkhead between two compartments, there is a risk that the bulkhead will buckle causing the collapsed pipe to separate from the fire collar. This separation results in leakage of fluid from the collapsed pipe into one of the compartments. Therefore, although the fire collar has prevented the fire from spreading from one compartment to the other, flooding of one compartment may yet occur. Especially on board ship, such flooding can represent a substantial danger.
It is an objet of the present invention to provide a solution to this problem.
Summary of the invention
According to a first aspect of the invention, there is provided a sleeve for use with a fire arrester system for a pipe carrying a fluid flowing therethrough which extends through a bore in a partition. The system comprises a fire collar through which the pipe passes, the fire collar being connected to the partition about the bore. The sleeve is longitudinally flexible, and has means for securing one end portion of the sleeve in a leak-free manner to the fire collar and means for securing an opposite end portion of the sleeve to the pipe. The arrangement is such that in the event of a fire causing the pipe to collapse in the vicinity of the fire collar, leakage of fluid from the pipe is substantially prevented.
The sleeve is preferably formed of a resilient and/or an elastomeric material. The material is preferably substantially inert to water or steam.
The sleeve may be corrugated to provide longitudinal flexibility.
The means for securing one end portion of the sleeve in a leak-free manner to the fire collar and/or the means for securing an opposite end portion to the pipe preferably comprises a worm drive hose clip, such as a Jubilee clip.
The sleeve in its unused state may have an incomplete cylindrical form comprising an longitudinally extending gap defined by opposed edges, to enable retro-fitting to an in-place fire arrester system, the opposed edges being capable of being sealed together after the sleeve is positioned about the fire collar and the pipe, thereby to complete the cylindrical configuration of the sleeve.
The partition may be selected from a wall, a floor, or a ceiling, and the present invention is particularly applicable where the partition is the bulkhead or deck of a ship, such as a steel bulkhead of a ship.
The pipe may be part of a ventilation system, or more generally pipes carrying gaseous or liquid materials. In some embodiments the pipe carries water, such as grey or black water.
The invention is particularly applicable when the pipe is formed of a material which is not form-retaining at the critical temperature, for example wherein the pipe is formed of a plastics material.
The invention also provides a method of substantially preventing leakage of fluid passing along a pipe which passes through a bore of a partition, a fire collar through which the pipe passes being connected to the partition about the bore, in the event of a fire causing the pipe to collapse in the vicinity of the fire collar. The method comprises: (i) locating a longitudinally flexible sleeve about the pipe adjacent the fire collar; (ii) securing one end portion of the sleeve in a leak-free manner to the fire collar; and (iii) securing an opposite end portion of the sleeve to the pipe.
The fire collar may comprise a housing, a hollow space defined within the housing through which the pipe passes, a body of intumescent material positioned within the housing adjacent the hollow space, and means for mounting the fire collar in a bore in the partition. In one form of the fire collar, the housing is cylindrical, although a square cross-section and other configurations are also possible. The arrangement is such that in the event of a temperature above a critical temperature and sufficient to cause the pipe to collapse, the intumescent material expands to block the hollow space. Generally, the collar is substantially cylindrical and is usually formed in one piece. Although the provision of lugs on the outside of the housing is possible for mounting the fire collar in a bore in a partition, for this purpose a flange extending from the housing is usually preferred.
The flange is ideally integral with the housing. The flange or lugs may be secured to the partition by welding.
In a fire, intumescent materials tend to char, swell, and form a barrier to flame, hot gases, and conductive heat transfer. Any suitable material may be used, and there are proprietary materials available which are well known to those skilled in the art. Exemplary intumescent materials include, but are not limited to, melamine, pentaerythritol, fluorocarbon, graphite, bentonite, clay, phosphated or borated melamine, and ammonium polyphosphate polyols. Expandable graphite is a particularly effective intumescent material. Graphite to be used as an intumescent material is conventionally treated with an acid (e.g., sulfuric, nitric, acetic acid, etc.) which permeates the layers of the graphite structure and causes the graphite to become expandable and form a thick insulative layer of carbon char when exposed to flame. Thus, in a preferred embodiment, a graphite-based intumescent material is utilised. Depending upon the intended application, the critical temperature will be within the range of 120°C to 180°C, most preferably from 140°C to 150°C.
The intumescent material is suitably held in position between baffles extending radially inwards from the inner surface of the housing. Especially when the housing is cylindrical, we prefer that the body of intumescent material is also cylindrical.
The housing, and/or the means for mounting the fire collar in a bore in a partition, is preferably formed of steel.
Description of a preferred embodiment
The invention will now be described in further detail, purely by way of example, with reference to the accompanying drawings, in which: Figure 1 shows the prior art fire arrester system for a pipe passing through a bore in a partition, which is shown partly broken away for the sake of clarity;; Figure 2 shows a possible outcome of a fire on one side of the bulkhead of the system of Figure 1; Figure 3 shows a sleeve according to the invention used with the fire arrester system of Figures 1 and 2; and Figure 4 shows the sleeve of Figure 3 being fitted to the fire arrester system of Figures 1 and 2; Figure 5 shows the sleeve of Figure 3 after being fitted to the fire arrester system of Figures 1 and 2; and Figure 6 shows a possible outcome of a fire on one side of the bulkhead of the system of Figure 5.
As shown in Figure 1, a plastic pipe 10 carrying water, as indicated by the arrows A and B, passes through in a bore 12 in a ship's steel bulkhead 14 between two ship's compartments 16 and 18. The pipe 10 passes through a fire collar 20. The fire collar comprises a cylindrical metal housing 24 and a circular steel flange 22, integral with the housing 24, which is welded to the bulkhead 14 about the bore 12.
The housing 24 of the fire collar defines a hollow space there-within, a layer of intumescent material (not shown) being carried on its inner circumferential surface. The intumescent material may be, for example, Intumex L (Registered Trade Mark), a graphite-based intumescent material having a critical temperature of 150°C, ex Chemie Linz GmbH, Austria.
As shown in Figure 2, in the event of a fire, the pipe 10 meRs and coDapses into two parts 1 Oa and 1 Ob in the vicinity of the fire collar 20. In known manner, the intumescent material within the collar is constrained to expand radially inwardly to form a physical barrier 25 across the fire collar which blocks the bore. When the fire is in compartment 18, there is a risk that the bulkhead will buckle in the direction of the arrows 0 causing the collapsed pipe to separate from the fire collar, as shown in Figure 2. With the prior art arrangement shown in Figures 1 and 2, this separation results in leakage of water from the collapsed pipe part lOa into the compartment 16, as indicated by the arrow C. Therefore, although the fire collar 20 has prevented the fire from spreading from compartment 18 to compartment 16, flooding of compartment 16 may yet occur. Especially on board ship, such flooding can represent a substantial danger.
Figure 3 shows a sleeve 26 formed of a resilient elastomeric synthetic rubber material substantially inert to water or steam. The sleeve 26 is corrugated to provide longitudinal flexibility. The sleeve comprises a relatively larger diameter first end portion 32, a relatively smaller diameter second end portion 36 and an intermediate corrugated portion 37 there-between. The sleeve is in the form of an incomplete cylinder having an longitudinally extending gap 28 defined by opposed edges 30.
The sleeve of Figure 3 is adapted to be retro-fitted to the fire arrester system of Figure 1. The sleeve 26 is sufficiently resilient to be opened up so as to be located, as a first step, about the pipe 10 adjacent the fire collar 20 (see Figure 4).
The opposed edges 30, 31 are then sealed together with adhesive after the sleeve 26 is positioned about the fire collar 20 and the pipe 10, thereby to complete the cylindrical configuration of the sleeve 26. The first end portion 32 of the sleeve 26 is then secured in a leak-free manner to the housing 24 of the fire collar 20 with a Jubilee worm drive hose clip 34 and the opposite end portion 36 of the sleeve 26 is secured to the pipe 10 with a Jubilee worm drive hose clip 38, as shown in Figure 5.
In the event of a fire causing the pipe 10 to collapse in the vicinity of the fire collar and the buckling of the bulkhead to separate the pipe from the collar 20, the sleeve 26 expands longitudinally as shown in Figure 6, substantially preventing leakage of water from the collapsed pipe part 1 Oa into the compartment 16.
Claims (13)
- CLAIMS1. A sleeve (26) for use with a fire arrester system for a pipe (10) extending through a bore (12) in a partition (14), the system comprising a fire collar (20) through which said pipe passes, the fire collar being connected to the partition about said bore, the sleeve being longitudinally flexible and having means (34) for securing one end portion (32) of the sleeve in a leak-free manner to the fire collar and means (38) for securing an opposite end portion (36) of the sleeve to the pipe, the arrangement being such that in the event of a fire causing the pipe to collapse in the vicinity of the fire collar, leakage of fluid from the pipe is substantially prevented.
- 2. The sleeve of claim 1, formed of a resilient material.
- 3. The sleeve of claim 1 or 2, formed of an elastomeric material.
- 4. The sleeve of any preceding claim, formed of a material substantially inert to water or steam.
- 5. The sleeve of any preceding claim, wherein the sleeve is corrugated to provide longitudinal flexibility.
- 6. The sleeve of any preceding claim, wherein said means for securing one end portion of the sleeve in a leak-free manner to the fire collar and/or said means for securing an opposite end portion to the pipe comprises a worm drive hose clip.
- 7. The sleeve of any preceding claim, having an incomplete cylindrical form comprising an longitudinally extending gap (28) defined by opposed edges (30), to enable retro-fitting to an in-place fire arrester system, said opposed edges being capable of being sealed together after the sleeve is positioned about the fire collar and the pipe, thereby to complete the cylindrical configuration of the sleeve.
- 8. A fire arrester system for a pipe extending through a bore in a partition, comprising a fire collar through which said pipe passes, the fire collar being connected to the partition about said bore, together with a sleeve according to any preceding claim having said one end portion secured in a leak-free manner to the fire collar and the opposite end portion secured to the pipe.
- 9. The fire arrester system of claim 8, wherein said partition is a steel bulkhead.
- 10. The fire arrester system of claim 8 or 9, wherein the partition is a bulkhead of a ship.
- 11. The fire arrester system of any one of claims 8 to 10, wherein the pipe carries water.
- 12. The fire arrester system of any one of claims 8 to 10, wherein the pipe is formed of a plastics material.
- 13. A method of substantially preventing leakage of fluid passing along a pipe which passes through a bore of a partition, a fire collar through which said pipe passes having a flange connected to the partition about said bore, in the event of a fire causing the pipe to collapse in the vicinity of the fire collar, the method comprising: (i) locating a longitudinally flexible sleeve about said pipe adjacent said fire collar; (ii) securing one end portion of the sleeve in a leak-free manner to the fire collar; and (iii) securing an opposite end portion of the sleeve to the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0919598A GB2475238A (en) | 2009-11-10 | 2009-11-10 | A sleeve for use with a fire arrester system on a partition wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0919598A GB2475238A (en) | 2009-11-10 | 2009-11-10 | A sleeve for use with a fire arrester system on a partition wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0919598D0 GB0919598D0 (en) | 2009-12-23 |
| GB2475238A true GB2475238A (en) | 2011-05-18 |
Family
ID=41502101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0919598A Withdrawn GB2475238A (en) | 2009-11-10 | 2009-11-10 | A sleeve for use with a fire arrester system on a partition wall |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2475238A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2839861A3 (en) * | 2013-08-22 | 2015-06-17 | Aik Flammadur Brandschutz GMBH | Fire protection device for the protection of a ceiling or wall opening carrying a supply line in case of fire |
| EP2851488B1 (en) * | 2013-09-19 | 2017-11-08 | Hauff-Technik GmbH & Co. KG | A method of manufacturing a wall or floor element and the use of an attachment part in such a method |
| US20190226586A1 (en) * | 2018-01-19 | 2019-07-25 | Flex-Hose Co., Inc. | Pipe Floor/Wall Penetration Bellows Seal |
| EP3647644A1 (en) * | 2018-10-31 | 2020-05-06 | Hilti Aktiengesellschaft | Fire protection device and tubular object comprising a fire protection device |
| EP3647643A1 (en) * | 2018-10-31 | 2020-05-06 | Hilti Aktiengesellschaft | Fire protection device and tubular object comprising a fire protection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4086736A (en) * | 1976-12-16 | 1978-05-02 | Daniel International Corporation | Fire and liquid seals for pipes and conduits and method of forming same |
| GB1587400A (en) * | 1977-05-13 | 1981-04-01 | Fredriksen & Co Ltd A S | Pipe seal |
| DE3147042A1 (en) * | 1981-11-27 | 1983-06-09 | Temple, Bernhard de, Prof. Dipl.-Ing., 6501 Heidesheim | Bushing |
| FR2675879A1 (en) * | 1991-04-25 | 1992-10-30 | Vibrachoc Sa | Device for supporting a pipeline when passing through a partition and ensuring sealing on either side of the partition |
| EP0900964A1 (en) * | 1997-09-08 | 1999-03-10 | Applicom B.V. | Fire and smoke resistant seal |
-
2009
- 2009-11-10 GB GB0919598A patent/GB2475238A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4086736A (en) * | 1976-12-16 | 1978-05-02 | Daniel International Corporation | Fire and liquid seals for pipes and conduits and method of forming same |
| GB1587400A (en) * | 1977-05-13 | 1981-04-01 | Fredriksen & Co Ltd A S | Pipe seal |
| DE3147042A1 (en) * | 1981-11-27 | 1983-06-09 | Temple, Bernhard de, Prof. Dipl.-Ing., 6501 Heidesheim | Bushing |
| FR2675879A1 (en) * | 1991-04-25 | 1992-10-30 | Vibrachoc Sa | Device for supporting a pipeline when passing through a partition and ensuring sealing on either side of the partition |
| EP0900964A1 (en) * | 1997-09-08 | 1999-03-10 | Applicom B.V. | Fire and smoke resistant seal |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2839861A3 (en) * | 2013-08-22 | 2015-06-17 | Aik Flammadur Brandschutz GMBH | Fire protection device for the protection of a ceiling or wall opening carrying a supply line in case of fire |
| EP2851488B1 (en) * | 2013-09-19 | 2017-11-08 | Hauff-Technik GmbH & Co. KG | A method of manufacturing a wall or floor element and the use of an attachment part in such a method |
| US20190226586A1 (en) * | 2018-01-19 | 2019-07-25 | Flex-Hose Co., Inc. | Pipe Floor/Wall Penetration Bellows Seal |
| US11221075B2 (en) * | 2018-01-19 | 2022-01-11 | Flex-Hose Co., Inc. | Pipe floor/wall penetration bellows seal |
| EP3647644A1 (en) * | 2018-10-31 | 2020-05-06 | Hilti Aktiengesellschaft | Fire protection device and tubular object comprising a fire protection device |
| EP3647643A1 (en) * | 2018-10-31 | 2020-05-06 | Hilti Aktiengesellschaft | Fire protection device and tubular object comprising a fire protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0919598D0 (en) | 2009-12-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |