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| Number | Title | Issue Date |
| 7422665 | Anode for cathodic protection An anode for use in cathodic protection of steel in concrete is formed from an electrically conductive material such as zinc and an ionically conductive material which is preferably a humectant and/or has a pH greater than 12 to enhance current flow. The materials a... | 09/09/2008 |
| 7402233 | Apparatus and method for cathodically protecting metals against corrosion A cathodic protection system is provided for cathodically protecting an metallic substrate against corrosion, where the system comprises a sacrificial anodic material containing, but not limited to, zinc, magnesium, aluminum or a mixture of these materials, with a c... | 07/22/2008 |
| 7276144 | Cathodic protection Cathodic protection of a structure including a steel member at least partly buried in a covering layer, such as steel rebar in a concrete structure, is provided by embedding sacrificial anodes into the concrete layer at spaced positions over the layer and connecting... | 10/02/2007 |
| 7264697 | Marine anode with current tester A sacrificial marine anode with a water proof encased current tester to alert an operator of proper connectivity, current status of the cathodic protection system for an associated marine structure, and status of current tester power supply is disclosed. ... | 09/04/2007 |
| 7258780 | Corrosion protection apparatus and method An apparatus and method for protecting a structure from corrosion, according to which the apparatus includes two pivotally connected members, at least one anode device connected to at least one of the members, and a resilient component engaged with the members. ... | 08/21/2007 |
| 7226532 | Cathodic protection of steel within a covering material Cathodic protection of an existing concrete structure, including a steel member at least partly buried, such as steel rebar, in the concrete structure, is provided by embedding anodes into a fresh concrete layer applied over an excavated patch and/or as a covering o... | 06/05/2007 |
| 7160433 | Cathodic protection system The cathodic protection system of a concrete structure (22) uses sacrificial anodes such as zinc, aluminum and alloys thereof embedded in mortar. A humectant is employed to impart high ionic conductivity to the mortar in which the anode is encapsulated. Lithi... | 01/09/2007 |
| 7097746 | Anodic protection of electrical contacts An anode protection device and method are provided. The method includes placing a sacrificial anode in proximity to the positive and negative contacts to shield or distort the field therebetween which provides preferential corrosion of the sacrificial anode, instead... | 08/29/2006 |
| 7017251 | Resistored anode and a water heater including the same Apparatus and method of incorporating a resistive interface between an anode rod and a water heater tank connector. The resistive interface can include a conductive polymer material or coating. ... | 03/28/2006 |
| 6902661 | Corrosion sensor A system using tank corrosion sensors to provide for an overall assessment and monitoring of the electro-chemical corrosion and coatings condition in ships' tanks, and particularly in ships' seawater or compensated fuel tanks. The system includes reference half-cell... | 06/07/2005 |
| 6858117 | Cathodic protection device for flexible pipes The flexible pipe comprises a plastic sealing sheath and an inner plastic sheath which define an annular space in which structural elements are placed. The structural elements comprising at least one armor ply consisting of metal wires wound helically with a long pi... | 02/22/2005 |
| 6613216 | Combination galvanic anode and wear plate for storage tanks A storage tank for fluids comprises a novel striker plate. The striker plate is comprised of a sacrificial galvanic anode and a steel core, and it is situated opposite an access opening used for measuring depth of fluid in the tank. The striker plate can ... | 09/02/2003 |
| 6562206 | Anode assembly A propeller attachment is disclosed including a body, the body including an anodic material, at least one projection projecting from the body, and a fastener coupled to the body. An anode is also disclosed including an annular body constructed from an ano... | 05/13/2003 |
| 6346188 | Battery-powered cathodic protection system The present disclosure relates to a cathodic protection system for inhibiting oxidation of a reinforcing member disposed within a cementitious structure. The system comprises a compact, autonomous battery adapted to mount to the cementitious structure at ... | 02/12/2002 |
| 6331242 | Anodic encasement corrosion protection system for underground storage tanks, and metallic components thereof Corrosible metallic elements of tank are protected by an anodic encasement sleeve. The anodic encasement sleeve employs an inner sacrificial anodic layer and an outer environmental barrier layer to provide both cathodic and barrier protection against corr... | 12/18/2001 |
| 6303017 | Cathodic protection of reinforced concrete Reinforcement in concrete is cathodically protected by galvanically connecting a sacrificial anode, such as a zinc or zinc alloy anode, to the reinforcement, and contacting the anode with an electrolyte solution having a pH which is maintained sufficientl... | 10/16/2001 |
| 6217742 | Cathodic protection system The present invention relates to a method of cathodic protection of reinforced concrete, and more particularly, to a method of improving the performance and service life of discrete anodes used in a cathodic protection system. The method of the present in... | 04/17/2001 |
| 6200397 | Method and apparatus for strip anode wrapping for cathodic protection of tubular members A novel method and apparatus to apply a corrosion protection in the form of a zinc (or other sacrificial anodic material) tape to a tubular member such as pipe or coiled tubing to used as an underground or underwater pipeline or flow line is disclosed. Th... | 03/13/2001 |
| 6193857 | Connector for use in cathodic protection and method of use Cathodic protection of concrete-reinforcing steel reinforcing elements is accomplished utilizing an anode of a metal (e.g. zinc) having a more negative electrical potential than the steel reinforcing element, and connecting at least one wire made of a duc... | 02/27/2001 |
| 6022469 | Repair of corroded reinforcement in concrete using sacrificial anodes Reinforcement in concrete is cathodically protected by galvanically connecting a sacrificial anode, such as a zinc or zinc alloy anode, to the reinforcement, and contacting the anode with an electrolyte solution having a pH which is maintained sufficientl... | 02/08/2000 |
| 6019877 | Protecting medical electrodes from corrosion A medical electrode assembly includes an electrically conductive electrode, an electrically conductive sacrificial element, and a layer of electrically conductive gel. The electrode has an electrical terminal to connect with external electrical circuitry.... | 02/01/2000 |
| 5968339 | Cathodic protection system for reinforced concrete The present invention resides in a method for cathodic protection of and/or chloride removal from a reinforced concrete structure. The method comprises the steps of: providing an anode comprising a conductive corrodible metal; providing a corrosive enviro... | 10/19/1999 |
| 5728275 | Sacrificial anode and method of making same A sacrificial anode and method of making a sacrificial anode are provided. The anode includes an extruded galvanically active metal rod and integrally formed end cap which has a cylindrically shaped portion with a threaded exterior surface. The anode is f... | 03/17/1998 |
| 5292411 | Method and apparatus for cathodically protecting reinforced concrete structures Cathodic protection of a reinforced concrete structure utilizes a metal anode such as a zinc anode in combination with a pressure sensitive ionically conductive hydrogel in contact with at least a portion of the surface of the anode. Preferably, the anode... | 03/08/1994 |
| 4910865 | Method of forming an anode cap assembly An anode cap assembly comprising a stamped metal cap having a generally cylindrical inner section and a closed outer section. An anode rod formed of a metal electronegative to steel is disposed in the cylindrical inner section and the steel core wire of t... | 03/27/1990 |
| 4879801 | Cathodically protected water heater A cathodically protected water heater which eliminates the need of a conventional anode rod. The water heater tank includes a cylindrical shell enclosed by upper and lower heads and a flue which is mounted within openings in the lower and upper heads. The... | 11/14/1989 |
| 4877354 | Pipeline anode Providing circumferential grooves in bracelet-type anodes on a pipeline provides for preservation of anode effectiveness during bending of the pipeline, such as in reeling operations.... | 10/31/1989 |
| 4629366 | Offshore marine structure with corrosion protection A marine structure adapted to be at least partially submerged at an offshore body of water to drill wells into the ocean floor and to produce fluids therefrom. A corrosion deterrent system for protecting the submerged members of the structure comprises sa... | 12/16/1986 |
| 4626330 | Torsionally installed anode and earth anchor/penetrator A torsionally installed anode for galvanic corrosion protection and a combination torsionally installed anode and earth penetrator is disclosed. The anode may be screwed (i.e., torsionally installed) into the earth (e.g., the seabed, the riverbed, or the ... | 12/02/1986 |
| 4609307 | Anode pod system for offshore structures and method of installation An anode pod system for cathodically protecting offshore structures and method of installing the system in which a set of anode pod units are individually placed on the ocean floor adjacent an offshore structure. Each anode pod unit comprises a plurality ... | 09/02/1986 |
| 4604068 | Marine propulsion device lower unit including propeller bearing member anode A lower unit for a marine propulsion device, which lower unit comprises a drive shaft housing having a lower end, a gear case housing connected to the lower end of the drive shaft housing, a propeller shaft located in and extending axially through the gea... | 08/05/1986 |
| 4571368 | Aluminum and zinc sacrificial alloy An improved aluminum base alloy which provides corrosion protection in fin stock applications includes 0.6-3.0% silicon; 0.2-1.0% by weight iron; up to 0.2% by weight copper; 0.8-2.0% by weight manganese; up to 0.2% by weight magnesium; from about 0.5% by... | 02/18/1986 |
| 4544465 | Galvanic anodes for submergible ferrous metal structures This invention provides a detachable sacrificial anode unit comprising a rigid core, e.g. a tubular steel member, and a body of sacrificial anode material, e.g. metals and alloys including zinc, aluminum and magnesium, surrounding and supported by said ri... | 10/01/1985 |
| 4496444 | Method of corrosion protection An anode for the cathodic protection of a metallic structure subject to corrosion includes a strip or band of aluminum, zinc, magnesium or alloys thereof. The strip or band is anodic to the metallic structure and has a surface which is adapted to face the... | 01/29/1985 |
| 4487230 | Increasing the output of a pipeline anode In the cathodic protection of tubular goods transporting fluids above 100° F. with aluminum or zinc anodes, the output efficiency of the anode is increased by thermally insulating the anode from the tubular goods on which the anode is placed.... | 12/11/1984 |
| 4176033 | Anode clamp assembly and method of installation An anode clamp assembly for use in protecting metallic support structure for an offshore oil and/or gas well operations platform from galvanic corrosion is disclosed. The assembly comprises a U-shaped metallic channeled member having straight sides and me... | 11/27/1979 |
| 4146448 | Protection of a stern tube shaft liner A method for the electrical protection of a liner used for sealing the stern tube shaft of a ship using an oil bath system, is characterized in that on the sea water-exposed side of the flange portion of the liner proper, at least one easily replaceable s... | 03/27/1979 |
| 4013811 | Laminated anode A laminated anode including a layer of sacrificial metal and a layer of impermeable material. The laminated anode is utilized to protect a metal mold from corrosion where the mold is used for processing a corrosive meat material.... | 03/22/1977 |
| 3994795 | Sacrificial anode Fracturing of arcuate anode segments per se or of an anode section of a sacrificial anode during installation of bracelet-type anodes about a pipeline to be cathodically protected is minimized. Distortion of the anode segment during cooling of the metal a... | 11/30/1976 |
| 3974071 | Water conditioning device A water conditioning device for conditioning the cold water supply to a beverage vending machine. The device uses a spirally twisted strip of corrosion and lime scale inhibiting copper-nickel alloy contained within a cylindrical casing through which the c... | 08/10/1976 |
