US20110064520A1 - Device for preventing ice formation on a surface layer - Google Patents
Device for preventing ice formation on a surface layer Download PDFInfo
- Publication number
- US20110064520A1 US20110064520A1 US12/992,390 US99239009A US2011064520A1 US 20110064520 A1 US20110064520 A1 US 20110064520A1 US 99239009 A US99239009 A US 99239009A US 2011064520 A1 US2011064520 A1 US 2011064520A1
- Authority
- US
- United States
- Prior art keywords
- heat
- water
- volume
- conduit
- surface layer
- 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.)
- Abandoned
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Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
- F24V99/00—Subject matter not provided for in other main groups of this subclass
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
- E01C11/26—Permanently installed heating or blowing devices ; Mounting thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Definitions
- This invention relates to a concrete cofferdam defining a closed space and being arranged to be received floating in a volume of water and comprising a collector conduit for a circulating fluid connected to a heat conduit, and adapted to absorb heat from the volume of water.
- An object of the present invention is to further develop the prior art, whereby a surface layer disposed on a bridge deck in the vicinity of the volume of water can be kept free of ice by means of heat from the volume of water.
- the cofferdam has
- the concrete cofferdam can form a part of a pier assembled from a plurality of concrete cofferdams.
- the concrete cofferdam can also form a substructure for a building construction such as a floating home.
- the circulating fluid can be collected directly from the water in the volume of water.
- a pump may thus circulate sea or lake water directly into the collector conduit from the natural volume of water and through the heat conduit.
- the circulating fluid can, however, also collect heat by heat exchange with the volume of water.
- the collector conduit and the heat conduit can then form a closed loop in common that contains a heat receiving and emitting fluid.
- the circulating fluid can also collect heat from the volume of water via a heat pump.
- FIG. 1 is a diagrammatic sectional view of an arrangement according to the invention
- FIG. 2 is an oblique view from above of a floating construction provided with an arrangement according to the invention
- FIG. 3 is a sectional view along the plane 3 of FIG. 2 of a floating construction having a modified arrangement according to the invention.
- FIG. 4 is a plane view of a plurality of connected floating constructions according to the invention.
- FIG. 1 generally shows a surface layer 74 of concrete having cast therein a surface heater or a surface heating loop or coil 12 comprising a heat conduit 10 for a circulating and heat emitting fluid adapted to prevent weather-induced formation of ice by emission of heat to a top surface 76 of the surface layer 74 .
- Surface layer 74 is placed on an insulating layer 78 to prevent heat emission from the coil to a supporting layer 72 .
- the supporting layer may be a ground layer below a pavement, for example, in the exemplary embodiment shown on FIGS. 2-4 , the supporting layer 72 is a top layer forming a bridge deck on the upper side of a floating construction in the shape of a concrete cofferdam 70 .
- the heat pipe conduit 10 is connected to a collector pipe conduit 20 for receiving heat from a volume or mass of water 40 , such as a sea, lake or possibly a man-made volume of water, in relative proximity to the surface layer 74 .
- Collector conduit 20 comprises a collector loop or coil 22 located in the volume of water.
- Collector coil 22 can be placed on a floor 42 of the volume 40 of water, as indicated in FIGS. 1 and 2 .
- Collector coil 22 may, however, also be located at the underside of the concrete cofferdam 70 , as shown in FIG. 3 .
- coil 22 may in a way known per se be placed in recesses or grooves 88 in the bottom 86 of the concrete cofferdam 70 , or also be molded (not show) into the bottom 86 of the cofferdam 70 . Such a recessed or molded-in coil may then be protected against various kinds of external influences such as anchoring of sea vessels.
- the heat conduit 10 can collect the heat emitting fluid directly from the volume of water.
- collector conduit 20 then has an open inlet end and an open outlet end to circulate water directly from the volume 40 of water through the heat conduit 10 and its coil 12 .
- a control center 30 may comprise a circulation pump (not shown) for the water.
- the heat conduit 10 and the collector conduit 20 may in common form a closed coil containing a heat receiving and emitting fluid that by heat exchange receives heat from the volume 40 of water and emits heat to the surface layer 74 .
- the control center 30 also has a circulation pump.
- the collector conduit 20 can be closed and contain a heat receiving and emitting fluid that received heat from the volume 40 of water and by heat exchange emits heat to the heat conduit 10 .
- the control center 30 can include a heat pump.
- the concrete cofferdam 70 can be a modular element included in a pier or bridge for access to a plurality of building constructions in the shape of, for example, floating homes 100 .
- the buildings 100 can be places on substructures i the shape of concrete cofferdams 70 provided with bridge decks or supporting layers 72 according to the invention.
- the concrete cofferdam 70 defines an closed space 90 in which the control center 30 can be located.
- the concrete cofferdam 70 may further be provided with laterally oriented projections 80 to which the floating homes 100 may be anchored.
- the heat conduit 10 may also extend in the projections 80 so that they also can be kept free from ice formation.
- control center 30 may include leveling vessels, filling/emptying possibilities, deaerators, expansion vessels, possible filters as well as possibilities for connection of conduits that heat other surrounding constructions, for example the floating homes, houseboats. Piers, cofferdams etc., to thereby heat not only the object in which it is housed.
- control central 30 can be dependent on the function of the collector and the heating coil in accordance with the following alternative embodiments:
- the collector and the heating coil may be an open system where the center 30 in principle consists of a circulation pump and a possible filter. In that case the collector has no function, as water is drawn directly from the volume of water and passes through the surface heating coil. (The collector then forms only a pressure drop, without any heat accumulating function—it is accordingly not needed in this embodiment.)
- Control center 30 then includes at least one circulation pump, filling-emptying device, expansion vessel, security valve and deaerator. The same fluid circulates through the collector and the surface heating coil.
- the collector and the surface heater coil are both closed circuits, and-the heat transfer is performed in a heat exchanger. In that case are needed two circulation pumps etc. An advantage in that case is that two types of fluids may be used, if needed. (Larger temperature variations are obtained at the surface layer, from minus degrees to maybe 40° C. in summer and high sunshine.)
- the center 30 comprises the heat pump as well as the remaining surrounding components according to the above paragraphs.
- the center in one cofferdam may, however, be connected to the center in the next cofferdam via feeding pipes (not shown).
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Road Paving Structures (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Thermal Insulation (AREA)
Abstract
The invention is concerned with an arrangement for preventing weather-induced formation of ice to a top surface (76) of an outdoor surface layer (74), comprising a heat conduit received in the surface layer (74). The heat conduit comprises a conduit (10, 12) for a circulating fluid adapted to emit heat to the surface layer (74) from a collector line (20, 22) adapted to receive heat from a volume (40) of water.
Description
- This invention relates to a concrete cofferdam defining a closed space and being arranged to be received floating in a volume of water and comprising a collector conduit for a circulating fluid connected to a heat conduit, and adapted to absorb heat from the volume of water.
- It is generally known to prevent formation of ice on top of outdoor surface layers such as market places and pavements, by heating lines located in the surface layers. From WO2005/095199A1 it is further known to heat a space in a floating concrete construction by means of the surrounding water.
- An object of the present invention is to further develop the prior art, whereby a surface layer disposed on a bridge deck in the vicinity of the volume of water can be kept free of ice by means of heat from the volume of water.
- According to an aspect of the invention, the cofferdam has
- a roof forming a bridge deck of the cofferdam;
- a heat conduit for a circulating fluid received in the surface layer and connected to the collector conduit for emitting heat to the surface layer.
- The concrete cofferdam can form a part of a pier assembled from a plurality of concrete cofferdams.
- The concrete cofferdam can also form a substructure for a building construction such as a floating home.
- In one embodiment the circulating fluid can be collected directly from the water in the volume of water. A pump may thus circulate sea or lake water directly into the collector conduit from the natural volume of water and through the heat conduit.
- The circulating fluid can, however, also collect heat by heat exchange with the volume of water. The collector conduit and the heat conduit can then form a closed loop in common that contains a heat receiving and emitting fluid.
- The circulating fluid can also collect heat from the volume of water via a heat pump.
- Other features and advantages with the invention may be apparent from the appended claims and the following description of exemplary embodiments.
-
FIG. 1 is a diagrammatic sectional view of an arrangement according to the invention; -
FIG. 2 is an oblique view from above of a floating construction provided with an arrangement according to the invention; -
FIG. 3 is a sectional view along theplane 3 ofFIG. 2 of a floating construction having a modified arrangement according to the invention; and -
FIG. 4 is a plane view of a plurality of connected floating constructions according to the invention. -
FIG. 1 generally shows asurface layer 74 of concrete having cast therein a surface heater or a surface heating loop orcoil 12 comprising aheat conduit 10 for a circulating and heat emitting fluid adapted to prevent weather-induced formation of ice by emission of heat to atop surface 76 of thesurface layer 74.Surface layer 74 is placed on aninsulating layer 78 to prevent heat emission from the coil to a supportinglayer 72. While the supporting layer may be a ground layer below a pavement, for example, in the exemplary embodiment shown onFIGS. 2-4 , the supportinglayer 72 is a top layer forming a bridge deck on the upper side of a floating construction in the shape of aconcrete cofferdam 70. - The
heat pipe conduit 10 is connected to acollector pipe conduit 20 for receiving heat from a volume or mass ofwater 40, such as a sea, lake or possibly a man-made volume of water, in relative proximity to thesurface layer 74.Collector conduit 20 comprises a collector loop orcoil 22 located in the volume of water.Collector coil 22 can be placed on afloor 42 of thevolume 40 of water, as indicated inFIGS. 1 and 2 .Collector coil 22 may, however, also be located at the underside of theconcrete cofferdam 70, as shown inFIG. 3 . More precisely,coil 22 may in a way known per se be placed in recesses orgrooves 88 in thebottom 86 of theconcrete cofferdam 70, or also be molded (not show) into thebottom 86 of thecofferdam 70. Such a recessed or molded-in coil may then be protected against various kinds of external influences such as anchoring of sea vessels. - In one embodiment, the
heat conduit 10 can collect the heat emitting fluid directly from the volume of water. In a manner not shown,collector conduit 20 then has an open inlet end and an open outlet end to circulate water directly from thevolume 40 of water through theheat conduit 10 and itscoil 12. In that case, acontrol center 30 may comprise a circulation pump (not shown) for the water. - In another embodiment the
heat conduit 10 and thecollector conduit 20 may in common form a closed coil containing a heat receiving and emitting fluid that by heat exchange receives heat from thevolume 40 of water and emits heat to thesurface layer 74. In that case thecontrol center 30 also has a circulation pump. - In still another embodiment the
collector conduit 20 can be closed and contain a heat receiving and emitting fluid that received heat from thevolume 40 of water and by heat exchange emits heat to theheat conduit 10. In that case thecontrol center 30 can include a heat pump. - As apparent from
FIGS. 2-4 , theconcrete cofferdam 70 can be a modular element included in a pier or bridge for access to a plurality of building constructions in the shape of, for example, floatinghomes 100. - As apparent from
FIG. 4 , also thebuildings 100 can be places on substructures i the shape ofconcrete cofferdams 70 provided with bridge decks or supportinglayers 72 according to the invention. - The
concrete cofferdam 70 defines an closedspace 90 in which thecontrol center 30 can be located. Theconcrete cofferdam 70 may further be provided with laterallyoriented projections 80 to which thefloating homes 100 may be anchored. As apparent fromFIGS. 2 and 3 , theheat conduit 10, may also extend in theprojections 80 so that they also can be kept free from ice formation. - In different embodiments of the invention, the
control center 30, besides circulation pumps, may include leveling vessels, filling/emptying possibilities, deaerators, expansion vessels, possible filters as well as possibilities for connection of conduits that heat other surrounding constructions, for example the floating homes, houseboats. Piers, cofferdams etc., to thereby heat not only the object in which it is housed. - As is partially apparent from the foregoing, the design of the control central 30 can be dependent on the function of the collector and the heating coil in accordance with the following alternative embodiments:
- Som delvis framg{dot over (a)}r av det föreg{dot over (a)}ende, kan ufformningen av
drivcentralen 30 kan vara beroende av kollektorns och ytvärmeslingans funktion enligt följande alternativa ufföringsformer: - 1) The collector and the heating coil may be an open system where the
center 30 in principle consists of a circulation pump and a possible filter. In that case the collector has no function, as water is drawn directly from the volume of water and passes through the surface heating coil. (The collector then forms only a pressure drop, without any heat accumulating function—it is accordingly not needed in this embodiment.) - 2) The collector and the surface heating coil are closed but are open relative to each other.
Control center 30 then includes at least one circulation pump, filling-emptying device, expansion vessel, security valve and deaerator. The same fluid circulates through the collector and the surface heating coil. - 3) The collector and the surface heater coil are both closed circuits, and-the heat transfer is performed in a heat exchanger. In that case are needed two circulation pumps etc. An advantage in that case is that two types of fluids may be used, if needed. (Larger temperature variations are obtained at the surface layer, from minus degrees to maybe 40° C. in summer and high sunshine.)
- 4) As above, but now the heat exchanger is replaced by a heat pump that upgrades the heat from the collector to temperatures that are higher than the collector temperature. (It is to be noted that in the three cases discussed above the temperature of the surface heater is always lower than that of the collector.) The
center 30 comprises the heat pump as well as the remaining surrounding components according to the above paragraphs. - When the cofferdams are serially connected, there should be at least one common control center that serves the other centers, i.e. the center having for example a heat pump, is then not present in each of the other centers. The center in one cofferdam may, however, be connected to the center in the next cofferdam via feeding pipes (not shown).
- The above detailed description is primarily intended to facilitate the understanding and any unnecessary limitations of the invention should not be interpreted therefrom. Modifications that are apparent to the skilled person when reading the description may be made without deviating from the spirit of invention or the scope of the following claims.
Claims (6)
1. A concrete cofferdam defining a closed space and adapted to be received floating in a volume of water and comprising
a collector conduit for a circulating fluid and connected to a heat conduit and adapted to receive heat from the volume of water,
a roof forming a bridge deck of the cofferdam;
a surface layer (74) provided onto a heat insulating layer of the bridge deck; and
a heat conduit for a circulating fluid and received in the surface layer and connected to the collector conduit for emitting heat to the surface layer.
2. The concrete cofferdam according to claim 1 , said cofferdam forming a part of a pier assembled of a plurality of concrete cofferdams.
3. The concrete cofferdam according to claim 1 , said cofferdam forming a substructure for a building construction.
4. The concrete cofferdam according to claim 1 , wherein the circulating fluid is collected directly from the water in the volume of water.
5. The concrete cofferdam according to claim 1 , wherein the circulating fluid collects heat by heat exchange with the volume of water.
6. The concrete cofferdam according to claim 4 , wherein the circulating fluid collects heat from the volume of water via a heat pump.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0801090A SE532415C2 (en) | 2008-05-14 | 2008-05-14 | Device for preventing ice formation on a surface layer |
SE08010902 | 2008-05-14 | ||
PCT/SE2009/050532 WO2009139711A1 (en) | 2008-05-14 | 2009-05-12 | Device for preventing ice formation on a surface layer |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110064520A1 true US20110064520A1 (en) | 2011-03-17 |
Family
ID=41318922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/992,390 Abandoned US20110064520A1 (en) | 2008-05-14 | 2009-05-12 | Device for preventing ice formation on a surface layer |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110064520A1 (en) |
EP (1) | EP2279300B1 (en) |
CA (1) | CA2723741C (en) |
DK (1) | DK2279300T5 (en) |
PL (1) | PL2279300T3 (en) |
SE (1) | SE532415C2 (en) |
WO (1) | WO2009139711A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10912154B1 (en) | 2020-08-06 | 2021-02-02 | Michael E. Brown | Concrete heating system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3056714B1 (en) * | 2016-09-26 | 2019-06-28 | Eurovia | HEAT EXCHANGE SYSTEM FOR A CHANNEL |
Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1088239A (en) * | 1913-03-01 | 1914-02-24 | Robert Paine | Floatable foundation for buildings. |
US2157959A (en) * | 1936-02-26 | 1939-05-09 | Knight Allan Walton | Floating bridge |
US3091203A (en) * | 1958-10-27 | 1963-05-28 | Ernest M Usab | Concrete floating wharf sturctures |
US3426109A (en) * | 1965-10-24 | 1969-02-04 | Harry E Dempster | Method of fabricating a concrete flotation pier |
US3977344A (en) * | 1974-10-07 | 1976-08-31 | John George Holford | Floatable concrete structures |
US4083317A (en) * | 1975-10-09 | 1978-04-11 | John E. Holder | Method and apparatus for breaking ice with water |
US4254821A (en) * | 1979-08-10 | 1981-03-10 | Thermo Electron Corporation | Heat pipe deicing apparatus |
US4305681A (en) * | 1978-11-22 | 1981-12-15 | Lennart Backlund | Method and apparatus for controlling the temperatures of asphalt bodies and concrete bodies |
US4547093A (en) * | 1982-08-10 | 1985-10-15 | Statham John A | Protection of vessels and equipment from moving ice |
US4565149A (en) * | 1982-03-11 | 1986-01-21 | Richard Clasky | Semi-submergible spherical residential structure |
US4880051A (en) * | 1986-07-14 | 1989-11-14 | Kabushiki Kaisha Patine Shokai | Piping apparatus for melting snow and ice |
US4913592A (en) * | 1989-02-24 | 1990-04-03 | Odeco, Inc. | Floating structure using mechanical braking |
US5421282A (en) * | 1993-12-16 | 1995-06-06 | Morris; Richard D. | Artificial floating island |
US6105530A (en) * | 1997-09-26 | 2000-08-22 | Salis; Giorgio | Floating wharf or pier for ship mooring |
US6240867B1 (en) * | 2000-05-16 | 2001-06-05 | Lockheed Martin Corporation | Distributed machinery structure for ships |
US6532884B2 (en) * | 2000-05-01 | 2003-03-18 | Maruta Electric Boatworks Llc | High speed electric watercraft |
US20040112267A1 (en) * | 2002-03-27 | 2004-06-17 | Gorman Patrick Henry | Floating structures |
WO2007073359A2 (en) * | 2005-12-23 | 2007-06-28 | Alpay Ince | Fixed structure platform on water |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2608682A1 (en) * | 1976-03-03 | 1977-09-08 | Maschf Augsburg Nuernberg Ag | Undersurface heating for roads using heat transfer fluid - which abstracts heat from warmer environment by natural convection |
DE2913151A1 (en) * | 1979-04-02 | 1980-10-23 | Herbert Dipl Ing Pferschy | Frozen ground thawing or snow melting pipes - have water derived from ground-water pumped through and returned |
SE527511C2 (en) * | 2004-04-02 | 2006-03-28 | Aquavilla Ab | Float construction in concrete for a floating dwelling prepared for a collector hose for a heat pump |
-
2008
- 2008-05-14 SE SE0801090A patent/SE532415C2/en unknown
-
2009
- 2009-05-12 DK DK09746871.4T patent/DK2279300T5/en active
- 2009-05-12 PL PL09746871T patent/PL2279300T3/en unknown
- 2009-05-12 EP EP09746871.4A patent/EP2279300B1/en not_active Not-in-force
- 2009-05-12 CA CA2723741A patent/CA2723741C/en active Active
- 2009-05-12 WO PCT/SE2009/050532 patent/WO2009139711A1/en active Application Filing
- 2009-05-12 US US12/992,390 patent/US20110064520A1/en not_active Abandoned
Patent Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1088239A (en) * | 1913-03-01 | 1914-02-24 | Robert Paine | Floatable foundation for buildings. |
US2157959A (en) * | 1936-02-26 | 1939-05-09 | Knight Allan Walton | Floating bridge |
US3091203A (en) * | 1958-10-27 | 1963-05-28 | Ernest M Usab | Concrete floating wharf sturctures |
US3426109A (en) * | 1965-10-24 | 1969-02-04 | Harry E Dempster | Method of fabricating a concrete flotation pier |
US3977344A (en) * | 1974-10-07 | 1976-08-31 | John George Holford | Floatable concrete structures |
US4083317A (en) * | 1975-10-09 | 1978-04-11 | John E. Holder | Method and apparatus for breaking ice with water |
US4305681A (en) * | 1978-11-22 | 1981-12-15 | Lennart Backlund | Method and apparatus for controlling the temperatures of asphalt bodies and concrete bodies |
US4254821A (en) * | 1979-08-10 | 1981-03-10 | Thermo Electron Corporation | Heat pipe deicing apparatus |
US4565149A (en) * | 1982-03-11 | 1986-01-21 | Richard Clasky | Semi-submergible spherical residential structure |
US4547093A (en) * | 1982-08-10 | 1985-10-15 | Statham John A | Protection of vessels and equipment from moving ice |
US4880051A (en) * | 1986-07-14 | 1989-11-14 | Kabushiki Kaisha Patine Shokai | Piping apparatus for melting snow and ice |
US4913592A (en) * | 1989-02-24 | 1990-04-03 | Odeco, Inc. | Floating structure using mechanical braking |
US5421282A (en) * | 1993-12-16 | 1995-06-06 | Morris; Richard D. | Artificial floating island |
US6105530A (en) * | 1997-09-26 | 2000-08-22 | Salis; Giorgio | Floating wharf or pier for ship mooring |
US6532884B2 (en) * | 2000-05-01 | 2003-03-18 | Maruta Electric Boatworks Llc | High speed electric watercraft |
US6240867B1 (en) * | 2000-05-16 | 2001-06-05 | Lockheed Martin Corporation | Distributed machinery structure for ships |
US20040112267A1 (en) * | 2002-03-27 | 2004-06-17 | Gorman Patrick Henry | Floating structures |
WO2007073359A2 (en) * | 2005-12-23 | 2007-06-28 | Alpay Ince | Fixed structure platform on water |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10912154B1 (en) | 2020-08-06 | 2021-02-02 | Michael E. Brown | Concrete heating system |
US11683862B2 (en) | 2020-08-06 | 2023-06-20 | Michael E. Brown | Concrete heating system |
Also Published As
Publication number | Publication date |
---|---|
EP2279300A1 (en) | 2011-02-02 |
EP2279300B1 (en) | 2016-10-12 |
WO2009139711A1 (en) | 2009-11-19 |
SE0801090L (en) | 2009-11-15 |
CA2723741A1 (en) | 2009-11-19 |
DK2279300T5 (en) | 2017-03-20 |
EP2279300A4 (en) | 2015-11-11 |
SE532415C2 (en) | 2010-01-12 |
PL2279300T4 (en) | 2018-03-30 |
PL2279300T3 (en) | 2018-03-30 |
CA2723741C (en) | 2014-09-16 |
DK2279300T3 (en) | 2017-01-30 |
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AS | Assignment |
Owner name: AQUAVILLA AB, SWEDEN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BERGSTROEM, RICHARD;REEL/FRAME:025354/0420 Effective date: 20101022 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |