GB2623127A - Improvements in relation to ultrasonic anti-fouling devices - Google Patents
Improvements in relation to ultrasonic anti-fouling devices Download PDFInfo
- Publication number
- GB2623127A GB2623127A GB2214797.9A GB202214797A GB2623127A GB 2623127 A GB2623127 A GB 2623127A GB 202214797 A GB202214797 A GB 202214797A GB 2623127 A GB2623127 A GB 2623127A
- Authority
- GB
- United Kingdom
- Prior art keywords
- adhesive tape
- transducer mount
- transducer
- article
- fouling device
- 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.)
- Pending
Links
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- 150000002739 metals Chemical class 0.000 description 4
- 238000004382 potting Methods 0.000 description 4
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- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
- B63B59/04—Preventing hull fouling
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0017—Means for protecting offshore constructions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Paints Or Removers (AREA)
- Catching Or Destruction (AREA)
Abstract
An ultrasonic anti-fouling device 100 comprises an ultrasonic transducer unit 20, fitted to a transducer mount 10. The transducer mount is secured to a surface 1 of an article to be protected 2. The transducer unit emits ultrasonic pulses into the surface. This can efficiently inhibit prevent the growth of algae and other contaminants if the surface is immersed in water for an extended period. Typically, the surface 1 might be the hull of a boat, ship or other such vessel. A layer of adhesive tape 14 is used to secure the transducer mount to the surface. A method of mounting an ultrasonic anti-fouling device with adhesive tape is also disclosed.
Description
Improvements in relation to Ultrasonic Anti-Fouling Devices
Technical Field of the Invention
The present invention relates to ultrasonic anti-fouling devices suitable for use on marine equipment. The invention may extend to a system comprising of multiple ultrasonic anti-fouling devices and to a method of fitting ultrasonic anti-fouling devices.
Background to the Invention
Anti-fouling systems have been developed as a means to tackle biological growth (fouling) onto marine vessels. This type of growth predominantly includes algae, microorganisms, barnacles and weeds which can attach onto the external structures of the vessel when stationary and/ or travelling through a marine environment. Where this occurs to the hull of a vessel, the overall performance of the vessel is diminished due to drag.
Fouling has traditionally been removed through mechanical force, manual labour, through dry-dock and/ or diving methods. Other techniques have included using chemical solutions that act as biocidal coating that can prevent the growth of algae and other contaminants. Although such techniques can be successful in preventing fouling from the vessel, they tend to be quite costly, take significant time and labour, and need the vessel to be out of use for long periods of time. Additionally, the use of biocides and chemicals can introduce certain issues associated with corrosion risk not only to the vessel but also its surroundings. Secondly, adequate handling and disposal of biocidal chemicals used for anti-fouling means are essential to ensure that chemicals are not accidently released into the environment to harm marine life.
To be able to mitigate the growth of fouling, another method is to mount ultrasonic devices on the vessel. Such devices can then emit ultrasonic pulses into the vessel. It has been found that this can be particularly efficient at inhibiting the growth of external contaminants. This can be a safer, more efficient in-situ method that does not require any further human involvement once installed.
Commonly, such devices are mounted in a desired position using adhesive. This allows an installer freedom to mount the device (or devices) in an optimum position. 30 To ensure vibration resistance and maintain impact resistance of the device over an extended period, very strong adhesives are used. Examples of such include acrylics, cyanoacrylates, urethanes, epoxies and other curable adhesives. Such adhesives may require complex handling procedures and careful application to ensure adequate coverage of the device to be mounted. Inadequate coverage can impact on the securing of the adhesive bond and or have implications for galvanic corrosion between materials once the device is immersed in water. Additionally, such adhesives typically have a long (8 hours to 7 days) curing period. As such, the device must be held in position and/ or not subjected to external stress during the curing process. Accordingly, fitting of such devices is typically carried out by skilled technicians and requires a vessel to be laid-up for an extended period. This adds substantial costs and mitigates against the adoption of such devices.
It is an aim of an embodiments of the invention to hope to overcome or at least partially mitigate some of the problems associated with the mounting of anti-fouling devices described above.
IS Summary of the Invention
According to an aspect of the present invention there is provided an anti-fouling device, comprising a transducer mount adapted to retain an ultrasonic transducer unit in position to emit an ultrasonic anti-fouling signal into an article to be protected; and wherein the transducer mount is secured to a surface of the article by adhesive tape.
According to an aspect of the present invention there is provided a method for securing an anti-fouling device to an article to be protected, the method comprising steps of: fitting adhesive tape to a transducer mount; securing the transducer mount to a surface of the article to be protected by use of the adhesive tape; and retaining an ultrasonic transducer unit in the transducer mount, the transducer unit in position to emit an ultrasonic anti-fouling signal into the article to be protected.
Advantageously, the adhesive tape of the present invention is used to secure the transducer mount to the surface of the article instead of a conventionally used epoxy adhesive. Despite the extended period required for full curing of an adhesive tape (3 days for full curing), surprisingly it provides sufficient adhesion to hold the transducer mount in position within 5 minutes of initial application. Epoxy adhesives requiring shorter overall cure times (-8 hours to 7 days) still require additional assistance to hold the transducer mount in place for an extended fraction of the curing period. Additionally, despite the relatively low overall shear strength of an adhesive tape compared to a cured epoxy adhesive, surprisingly, the relatively low shear strength proves to be adequate to secure the transducer mount in place initially and for an extended period of use. Additionally, the handling time for the adhesive tape is mere minutes in comparison to a complex handling process required for the epoxy adhesive therefore the adhesive tape can be applied in situations where a faster and more efficient curing period is required.
The adhesive tape may comprise a substrate provided with an adhesive coating on each side. The substrate may be of any suitable material, including but not limited to acrylic or modified acrylic, acrylic or modified acrylic foam, urethane or modified urethane, urethane or modified urethane foam or the like. The adhesive coating may comprise any suitable adhesive including but not limited to acrylic, or modified acrylic, urethane or modified urethane, cyanoacrylates or modified cyanoacrylates.
The adhesive tape may have any suitable thickness. Suitable thickness may be in the range of 0.5 mm to 2.5 mm, or in some embodiments 1 mm to 1.5 mm.
The adhesive tape may have a full curing time in the range of 2 days to 5 days, or in some embodiments 2.5 to 3.5 days. The adhesive tape may have a shear strength in the range 0.1 MPa to 30 MPa, or in some embodiments 0.5 MPa to 5 MPa.
The adhesive tape may have a release liner on one or both sides. In such embodiments, the method may comprise the step of removing the release liner. Where there are release liners on both sides of the adhesive tape, the method may comprise the steps of removing the release liner on a first side of the tape before fitting the adhesive tape to a transducer mount, and removing the release liner on the second side of the tape before securing the transducer mount to a surface of the article to be protected by use of the adhesive tape. The release liner may be in the form of a film. The release liner may comprise polyethylene or modified polyethylene.
The adhesive tape may be applied to a mounting surface of the transducer 30 mount. The topography of the mounting surface may be adapted to match the topography of the surface of the article to be protected. Typically, both the mounting surface and the surface of the article to be protected would be substantially flat, at least in so far as they interact with each other.
The surface of the article to be protected may be prepared before securing the transducer mount. The preparation may include the step of cleaning the surface or at least the area of the surface where the transducer mount is to be fitted.
In one embodiment, the adhesive tape is applied to all or substantially all of the mounting surface of the transducer mount. Advantageously, this improves the securing of the transducer mount to the article. Additionally, this minimises the possibility of corrosion occurring if there is a difference in galvanic potential between the transducer mount and the article if both contacts are metallic, or general corrosion for non-metal to non-metal and/ or metal to non-metal contact, when immersed.
In one embodiment, a single sheet of adhesive tape may cover substantially all of the mounting surface. In other embodiments, multiple strips of adhesive tape may be applied so as to substantially cover the mounting surface. In such embodiments, the respective strips of adhesive tape may be applied edge to edge. In embodiments comprising multiple strips of adhesive tape, the width of the adhesive tape strips may have any suitable width. Suitable widths may be in the range of 10 mm to 150 mm, or in some embodiments 5 mm to 30 mm The transducer unit may comprise a connector portion adapted to be received and retained by a connector bore of the transducer mount. In some embodiments, the connector bore may be a through bore In order to receive the transducer unit, the connector bore may have a corresponding profile to the connector portion of the transducer unit. In order to retain the transducer unit, the bore and the connector portion may be provided with co-operating features. The co-operating features may comprise a screw thread, bayonet elements, snap fitting elements or the like. Alternatively, the connector portion may be retained within the connector bore by use of adhesive or the like.
In one embodiment, the transducer mount may be provided with a grub bore that intersects the connector bore. In some embodiments, the grub screw may intersect the connector bore at a substantially perpendicular angle. The grub bore may be threaded and adapted to receive a corresponding grub screw. The grub screw, when driven into the grub bore may thus apply additional pressure on the connector portion of the transducer unit. This can increase the security of retention.
In one embodiment, the connector bore may be aligned with a central axis of the body of the transducer mount. The body may have a substantially circular or polygonal form a co-axial alignment with the connector bore.
The mounting surface may extend substantially orthogonal to the central axis of the body. In such cases the mounting surface may substantially surround an end of the 10 bore.
The transducer mount may comprise a body with sloped sides angled with respective to the central axis. In such embodiments, the body may be wider at the mounting surface end than at an unattached end distal from the mounting surface. Advantageously, this improves the security of the device attachment, so as to reduce drag when the device is immersed and reduces the adverse effect and potential impact of floating debris when immersed.
The transducer mount may be comprised of plastic or elastomeric materials, or the like. In other embodiments, the transducer mount may be comprised of a suitable metals or metal alloys. Suitable metals may include but are not limited to aluminium, copper, steel, brass or the like. In some embodiments, the transducer mount is made of a material that matches the material of the article to be protected. This can reduce the possibility of galvanic corrosion if there is direct contact between the mounting surface and the article.
The transducer unit may comprise an active ultrasonic element provided within a protective housing. The active ultrasonic element may be in contact with to or adjacent to an active surface at an end of the housing. When secured by the transducer mount to an article to be protected, the active surface may be in contact with or adjacent to the surface of the article to be protected.
The active ultrasonic element may be secured within the housing by a potting compound. Suitable potting compounds include but are not limited to epoxy, modified epoxy, polyurethane, modified polyurethane, silicone and modified silicone.
The protective housing may be comprised of plastic material, metals or metal alloys as appropriate. Suitable plastic material may include but are not limited to polyvinylchloride, modified polyvinylchloride, Nylon, modified nylon, or the like. Suitable metals may include but are not limited to aluminium, copper, steel, brass or the like. In some embodiments, the protective housing is made of a material that matches the material of the article to be protected. This can reduce the possibility of galvanic corrosion if there is direct contact between the active surface and the article.
The active ultrasonic element may comprise one or more ultrasonic transducers. The active ultrasonic element may comprise a control unit operable to control operation of the one or more ultrasonic transducers. The control unit may be adapted to store one or more ultrasonic pulse patterns.
The transducer unit may be provided with an internal power source or with a power connection for an external power supply. The internal power source may be a battery. The transducer unit may be provided with a communication unit operable to enable data to be communicated between an external device and the control unit.
Detailed Description of the Invention
In order that the invention may be more clearly understood one or more embodiments thereof will now be described, by way of example only, with reference to the accompanying drawings, of which: Figure 1 shows a transducer mount for an anti-fouling device according to the present invention, provided with adhesive tape for securing the transducer mount to a surface, the adhesive tape having a release liner in place; Figure 2 shows a transducer mount for an anti-fouling device according to the present invention, provided with adhesive tape for securing the transducer mount to a surface, the adhesive tape having a release liner in partly removed; and Figure 3 shows a cross-sectional view of an anti-fouling device according to the present invention secured to a surface; and Figure 4 shows a schematic block diagram of a transducer unit of an anti-fouling device according to the present invention.
While the concepts of the present disclosure can be presented in various embodiments and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and will be described herein in detail. It is noted that there is no intent to limit the concepts of the present. disclosure to the particular forms disclosed, but on the contrary, the intention is to cover all embodiments, modifications, alternatives consistent with the present disclosure and presented in the claims.
As illustrated in Figure 1, the present invention relates to an ultrasonic antifouling device 100 comprising a transducer unit 20, fitted to a transducer mount 10.
The transducer mount 10 is secured to a surface 1 of an article to be protected 2. The transducer unit 20 can thus emit ultrasonic pulses into the surface 1. This can efficiently inhibit prevent the growth of algae and other contaminants if the surface 1 is immersed in water for an extended period. Typically, the surface 1 might be the hull of a boat, ship or other such vessel.
In the example for an anti-fouling device 100 of Figure 1, the transducer unit 20 comprises an active element 21 operable to generate ultrasonic pulses. The active element 21 is provided within a housing 22 and encapsulated by a potting compound 23 within housing 22. The housing 22 is protective and adapted to enable the transducer unit 20 to be retained by the transducer mount 10. The housing 22 can be metallic in many embodiments.
The potting compound 23 provides additional protection and also aids in transmitting ultrasonic pulses to an active end 24 of the transducer unit 20. In use, the active end 24 is in contact with surface 1 to maximise efficiency of transmission of ultrasonic pulses into the surface 1. An opposing end 25 of the transducer unit 20 may be adapted to hold a power source, power connection, data store or data connection as required.
As shown in Figure 2, the active element 21 may comprise a transducer 31 operable in response to a control unit 32. The control unit 32 may be a microprocessor and may be provided with volatile or non-volatile memory, in which can be stored a suitable ultrasonic pulse pattern. In the illustrated example, the active element 21 comprises a power source 33, such as a battery or a power connection for an external power supply. In the illustrated example, the active element 21 may also be provided with a data connection 34, facilitating, for instance, updating of ultrasonic pulse data stored by the control unit 32.
The housing 22 is adapted to enable the transducer unit 20 to be retained by the transducer mount 10. As shown in the example, the active end 24 is provided on a connector portion 26, adapted to engage with the transducer mount 10.
The transducer mount 10 has an external profile corresponding to an annular truncated cone form. In particular, the transducer unit 10 has a connector bore 11 and sloped external sides 12. The sloped external sides 12 may reduce drag when the device 100 is immersed and reduces the adverse effect of potential impact with floating debiis when immersed.
In many examples, the transducer mount 10 may he metallic and the metallic material may be selected to match surface 1. This can reduce the possibility of galvanic corrosion if there is direct contact between the transducer mount 10 and surface 1.
The connector bore 11 is adapted to engage with connecting portion 26. hi the example shown both connector portion 26 and connector bore 11 are provided with corresponding screw threads. The skilled person will appreciate that the other cooperating features could be provided in alternative embodiments.
The transducer mount 10 has a mounting surface 13 facilitating a secure connection between the transducer mount 10 and the surface 1. Typically, both mounting surface 13 and surface 1 are substantially flat in so far as they interact.
In the present invention, a layer of adhesive tape 14 used to secure the transducer 30 mount 10 to surface 1. In one example, the adhesive tape 14 comprises is a modified acrylic foam substrate provided with adhesive coating on either side. Whilst such typical adhesive tapes have relatively low shear strengths and relatively long full cure times compared to epoxy adhesives, surprisingly it has been found that tape provides adequate security of connection for the transducer mount 10 to be unsupported within an hour or so of fitting. In contrast, a transducer mount 10 secured with epoxy adhesive may need external support for up to 24 hours.
In order to fit the ultrasonic anti-fouling device 100 to the article 6, adhesive tape 14 is first fitted to the mounting surface 13 of the transducer mount 10. As illustrated in Figure 3, the adhesive tape 14 covers substantially the whole mounting surface 13. This thereby maximises the connection between the mounting surface 13 and surface 1. It also minimises the possibility of galvanic corrosion.
The adhesive tape 14 may comprise a single sheet cut to the shape of the mounting surface. Alternatively, the adhesive tape 14 may comprise several sheets laid edge to edge on the mounting surface 13.
As illustrated in Figure 3, the adhesive tape 14 can be provided with a release liner 15. This liner 15 can be left in place until an area of surface 1 is selected for fitting the transducer mount 10. Typically, this area of surface 1 may be cleaned or otherwise prepared.
When the surface 1 is ready to have the transducer mount 10 fitted, the release 20 liner 15 is removed from adhesive tape 14 as shown in Figure 4. The mounting surface 13 of transducer mount 10 can then be pressed against surface 1. Typically, this may be held in place for an hour or so using an external support (not shown).
Subsequently, the connector portion 26 of the transducer unit can be fitted into the connector bore 11 until the active surface 24 is in contact with surface 1.
Engagement between the respective screw threads retains the transducer unit 20 within the transducer mount 10.
The one or more embodiments are described above by way of example only. Many variations are possible without departing from the scope of protection afforded by the appended claims.
Claims (23)
- CLAIMS1. An anti-fouling device, comprising a transducer mount adapted to retain an ultrasonic transducer unit in position to emit an ultrasonic anti-fouling signal into an article to be protected; and wherein the transducer mount is secured to a surface of the article by adhesive tape.
- 2. An anti-fouling device as claimed in claim 1 wherein the adhesive tape comprises a substrate provided with an adhesive coating on each side.
- An anti-fouling device as claimed in any preceding claim wherein the adhesive tape has a release liner on one or both sides.
- 4. An anti-fouling device as claimed in any preceding claim wherein the adhesive tape is applied to a mounting surface of the transducer mount.
- 5. An anti-fouling device as claimed in claim 4 wherein the adhesive tape is applied to all or substantially all of die mounting surface of die transducer mount.
- 6. An anti-fouling device as claimed in claim 5 wherein a single sheet of adhesive tape covers substantially all of the mounting surface.
- 7. An anti-fouling device as claimed in claim 5 wherein multiple strips of adhesive tape may be applied so as to substantially cover the mounting surface.
- 8. An anti-fouling device as claimed in any preceding claim wherein the transducer unit comprises a connector portion adapted to be received and retained by a connector bore of the transducer mount by the provision of co-operating features.
- 9. An anti-fouling device as claimed in claim 8 wherein the transducer mount is provided with a grub bore that intersects the connector bore, the grub bore threaded and adapted to receive a corresponding grub screw.
- 10. An anti-fouling device as claimed in claim 8 or claim 9 wherein the connector bore is aligned with a central axis of the body of the transducer mount and the mounting surface extends substantially orthogonal to the central axis of the body.
- 11.
- 12.
- 13.
- 14.
- 15.
- 16.
- 17. 1 IAn anti-fouling device as claimed in any preceding claim wherein the transducer mount comprises a body with sloped sides angled with respective to the central axis.An anti-fouling device as claimed in any preceding claim wherein the transducer mount is made of a material that matches the material of the article to be protected An anti-fouling device as claimed in any preceding claim wherein the transducer unit comprises an active ultrasonic element provided within a protective housing, the active ultrasonic element in contact with to or adjacent to an active surface at an end of the housing.An anti-fouling device as claimed in claim 13 wherein when secured by the transducer mount to an article to be protected, the active surface is in contact with or adjacent to the surface of the article to be protected.An anti-fouling device as claimed in claim 13 or claim 14 wherein the protective housing is made of a material that matches the material of the article to be protected.An anti-fouling device as claimed in any one of claims 13 to 15 wherein the active ultrasonic element comprises a control unit adapted to store one or more ultrasonic pulse patterns.A method for securing an anti-fouling device to an article to be protected, the method comprising steps of fitting adhesive tape to a transducer mount; securing the transducer mount to a surface of the article to be protected by use of the adhesive tape; and retaining an ultrasonic transducer unit in the transducer mount, the transducer unit in position to emit an ultrasonic anti-fouling signal into the article to be protected.
- 18. A method as claimed in claim 17 wherein the adhesive tape has a release liner on one or both sides and the method comprises removing the release liner on a first side of the tape before fitting the adhesive tape to a transducer mount and removing the release liner on the second side of the tape before securing the transducer mount to a surface of the article to be protected by use of the adhesive tape.
- 19. A method as claimed in claim 17 or claim 18 wherein the adhesive tape is applied to a mounting surface of the transducer mount.
- 20. A method as claimed in claim 19 wherein the adhesive tape is applied to all or substantially all of the mounting surface of the transducer mount.
- 21. A method as claimed in claim 20 wherein a single sheet of adhesive tape covers substantially all of the mounting surface.
- 22. A method as claimed in claim 20 wherein multiple strips of adhesive tape are applied so as to substantially cover the mounting surface.
- 23. A method as claimed in any one of claims 17 to 22 wherein the surface of the article to be protected is prepared before securing the transducer mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2214797.9A GB2623127A (en) | 2022-10-07 | 2022-10-07 | Improvements in relation to ultrasonic anti-fouling devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2214797.9A GB2623127A (en) | 2022-10-07 | 2022-10-07 | Improvements in relation to ultrasonic anti-fouling devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202214797D0 GB202214797D0 (en) | 2022-11-23 |
| GB2623127A true GB2623127A (en) | 2024-04-10 |
Family
ID=84818134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2214797.9A Pending GB2623127A (en) | 2022-10-07 | 2022-10-07 | Improvements in relation to ultrasonic anti-fouling devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2623127A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6928948B1 (en) * | 2002-04-18 | 2005-08-16 | Allen T. Shannon | Transducer mounting block |
| WO2009150437A2 (en) * | 2008-06-14 | 2009-12-17 | Blue & Green Marine Limited | An anti-fouling arrangement |
| GB2597253A (en) * | 2020-07-16 | 2022-01-26 | Nrg Marine Ltd | A mounting device for an anti-fouling system |
-
2022
- 2022-10-07 GB GB2214797.9A patent/GB2623127A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6928948B1 (en) * | 2002-04-18 | 2005-08-16 | Allen T. Shannon | Transducer mounting block |
| WO2009150437A2 (en) * | 2008-06-14 | 2009-12-17 | Blue & Green Marine Limited | An anti-fouling arrangement |
| GB2597253A (en) * | 2020-07-16 | 2022-01-26 | Nrg Marine Ltd | A mounting device for an anti-fouling system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202214797D0 (en) | 2022-11-23 |
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