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Class 405/211.1 - Corrosion prevention


Subclass of Class 405 - Hydraulic and earth engineering
Definition: Subject matter comprising means for preventing deterioration
No. of patents: 35
Last issue date: 12/22/2009


NumberTitleIssue Date
7635237Retrievable surface installed cathodic protection for marine structures
An anode column for protecting a marine structure from corrosion includes: (a) an elongated guide having upper and lower ends, and adapted to be physically supported in an upright position in a body of water which overlies a seabed, independent of the marine structu...
12/22/2009
7316525Vortex induced vibration optimizing system
There is disclosed a system comprising a structure, a vortex induced vibration monitoring system, adapted to monitor a vortex induced vibration level of the structure, a tensioner connected to the structure, and a controller adapted to calculate a tension on the str...
01/08/2008
7186321Cathodic protection system for metallic structures
An active cathodic protection system, the apparatus comprising a rectifier element with at least one electrical connection to a source of electrical current, the rectifier element associated with a direct current positive (+) output terminal for electrical connectio...
03/06/2007
7138038Expandable anode pod
The present invention 10 discloses a collapsible pod for providing cathodic protection to a preferred structure 12. The present invention 10 has a top frame 20 and a bottom frame 22 with a plurality of folding leg segments 24
11/21/2006
7080690Method and apparatus using traction seal fluid displacement device for pumping wells
Liquid is lifted from a well by a traction seal fluid displacement device which is moveably positioned within the production tubing, and which maintains a seal during movement. The traction seal device comprises a resilient flexible toroid shaped structure within ou...
07/25/2006
7070361Apparatus and methods for providing VIV suppression to a riser system comprising umbilical elements
Apparatus for suppressing vortex induced vibrations on a marine element of a riser system wherein the riser system comprises at least one umbilical element. Systems comprising and methods of using said apparatus to suppress vortex induced vibrations. The apparatus, ...
07/04/2006
7017666Smooth sleeves for drag and VIV reduction of cylindrical structures
A method for controlling drag and vortex induced vibration in a substantially cylindrical element by providing an ultra-smooth surface about the cylindrical element. The system for controlling drag and vortex induced vibration utilizes a substantially cylindrical ma...
03/28/2006
6994492Methods for remote installation of devices for reducing drag and vortex induced vibration
Methods for remotely installing vortex-induced vibration (VIV) reduction and drag reduction devices on elongated structures in flowing fluid environments. The devices installed can include clamshell-shaped strakes, shrouds, fairings, sleeves and flotation modules.
02/07/2006
6922886APT-1 (anode placement tool-model 1)
An apparatus designed for installing anode bracelets upon pipes used in cathodic protection systems. The apparatus includes a pair of grasp booms which hold the anode bracelet during installation of the bracelet around the pipe to be cathodically protected. The gras...
08/02/2005
6565287Apparatus for suppression of vortex induced vibration without aquatic fouling and methods of installation
Apparatus and methods for suppressing vortex-induced vibrations (VIV) of aquatic elements of underwater structures. The system includes use of a sleeve positioned around at least a portion of an aquatic element and at least one strake positioned along at ...
05/20/2003
6561736Frictional coupler and stiffener for strengthening a section of piling
Sheathing members surround the pile and are clamped to it by bolts inserted through flange members or portions outside the piles, which clamp the sheathing members against the pile above and below a deteriorated section of a pile and which bridge the dete...
05/13/2003
6536991Method of structurally reinforcing an assembly of tubular members in a marine environment
A method and apparatus for structurally reinforcing a tubular member, or an assembly of tubular members in a marine environment is provided. The assembly includes a smaller diameter inner flow casing and a larger diameter outer conductor pipe, providing a...
03/25/2003
6461082Anode system and method for offshore cathodic protection
A cathodic protection system for offshore structures includes an elongated electrode carrier, such as a pipe, with a plurality of sacrificial anodes attached, that is placed on the ocean floor and electrically connected to the structures to be protected. ...
10/08/2002
6395359Power cylinder non-metallic liner seal assembly
Corrosion resistance is provided for a power cylinder by providing a preloaded molded urethane elastomer sleeve liner within an outer cylinder of material such as a copper/nickel alloy which is subject to corrosion from long-term exposure to ambient fluid...
05/28/2002
6371696Pylon servicing apparatus
A pylon servicing apparatus comprising a carriage (11) having a first drive mechanism (17) provided on the carriage (11), the first drive mechanism (17) being adapted to engage the pylon (10) to enable the carriage (11) to be moved longitudinally along th...
04/16/2002
6347911Vortex shedding strake wraps for submerged pilings and pipes
Flexible elastomer wrap panels stretched and clamped encircling submerged pilings, risers and pipelines are coated to resist degradation by any form of marine life, and incorporate an interior pile-facing felt layer impregnated with a corrosion inhibiting...
02/19/2002
6190090Apparatus for use in a pipeline
An apparatus for use in a pipeline is disclosed. The apparatus has a housing through which pipeline fluids may enter from the rear of the housing, pass through the housing and subsequently exit from the housing. A first bonnet, having several openings, is...
02/20/2001
6113313Pile wrapper and clamping assembly
A pile wrapper closure assembly includes a pair of clamping bars each having a retaining groove with an undersized throat portal opening, and a pair of retaining rods. Each retaining rod secures one end of the pile wrapper in the retaining groove of its r...
09/05/2000
5941662Method and apparatus for protecting a flange
Flanges are often subject to corrosive marine environments and/or fire-prone environments when they are employed in applications such as offshore drilling and production platforms, or other marine applications. An apparatus and method to protect the flang...
08/24/1999
5919004Method and apparatus for protective encapsulation of structural members
A method and apparatus for creating a controlled environment about a pile submerged in a body of water in order to prevent marine infestation or further marine infestation, the apparatus in process comprising a tubular jacket installed about the submerged...
07/06/1999
5879817Reinforced concrete structure
A metal coating of typically a valve metal, especially a titanium metal coating, is applied by thermal spraying to the surface of concrete, most particularly steel-reinforced concrete. The metal such as titanium may be sprayed by any one of several therma...
03/09/1999
5501299Process and apparatus for preventing corrosion of a hydraulic elevator cylinder
The surface of a hydraulic cylinder is enclosed with a cylindrical casing. A fluid, preferably a thixotropic dielectric hydrophobic fluid which retains a gel structure when static, has a specific gravity greater than water and inhibits bacteriogenic and a...
03/26/1996
5348425Piston cylinder device with a protective coating and method of producing such a coating
A method is described for protecting piston cylinder devices against corrosion by a pressure resistant thermoset or cured material coating. At least the outer and inner cylindrical surfaces, for example, of a mine prop, that cooperate with a sealing devic...
09/20/1994
5226751Controlling the environment around a submerged pile or other structures by encapsulation, and treating and repairing the encapsulation area
A process and apparatus for creating a controlled environment about a portion of a submerged pile to be treated comprises a jacket fitted about the pile and sealed at both the top and bottom ends relative to the pile to provide a sealed encapsulated space...
07/13/1993
4629366Offshore 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
4619557Corrosion protection for mooring and riser elements of a tension leg platform
A flame sprayed aluminum coating of high strength steel components offers excellent seawater corrosion protection, increased fatigue life and uniform low level cathodic protection that avoids hydrogen embrittlement. Marine mooring and riser elements fabri...
10/28/1986
4614461Tendon of TLP and electrical corrosion protecting method of the same
The tendons of a tension leg platform (TLP) used for producing petroleum offshore at a depth of 400-1000 m are protected against fatigue corrosion which mainly determines the life of the tendons. The straight steel pipes (1) have an insulative, corrosion-prote...
09/30/1986
4484839Method and apparatus for installing anodes on steel platforms at offshore locations
A method and apparatus is provided for supplementing the substructure of an offshore platform within, or in the vicinity of, the well conductors of the platform so as to add large numbers of anodes distributed vertically within the platform adjacent the w...
11/27/1984
4484840Method and apparatus for installing anodes on steel platforms at offshore locations
A method and apparatus for supplementing the substructure of an offshore platform within, or in the vicinity of, the well conductors of the platform so as to add large numbers of anodes distributed vertically within the platform adjacent the well conducto...
11/27/1984
4415293Offshore platform free of marine growth and method of reducing platform loading and overturn
Method of prevent marine growth on the shallow water portions of platform legs by applying a polymer coating to the legs and covering the polymer with a copper-nickel alloy anti-fouling covering....
11/15/1983
4292149Current rope anodes
The invention provides a submergeable structure provided with cathodic protection means comprising a flexible impressed current anode assembly including at least one elongate electrode wound around a rope and lying in the depressions between the strands o...
09/29/1981
4211503Bimetallic corrosion resistant structural joint and method of making same
A corrosion resistant bimetallic structure which includes a pair of butt-welded steel elements having protected surfaces extending to the weld; spaced, protective overlays of corrosion resistant non-ferrous metal joined to portions of the protected surfac...
07/08/1980
4143540Method of preventing corrosion of joints of steel structures submerged in corrosive media
The integrity of corrosion prevention sheaths of corrosive-resistant metal employed to prevent member corrosion on off-shore platforms is monitored by incorporation of a pressure sensing line sealed into the zone between the sheath and the member. This ap...
03/13/1979
4056446Diverless cathodic protection data acquisition
Diverless monitoring of cathodic protection of offshore platforms wherein a reference electrode is passed along a guideline in proximity to a portion of the platform subject to corrosion is improved by maintaining the electrode at a fixed distance and rad...
11/01/1977
 
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