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Donald Wayne Allen, Richmond US

Donald Wayne Allen, Richmond, TX US

Patent application numberDescriptionPublished
20090220307STRAKE SYSTEMS AND METHODS - There is disclosed a system comprising a structural element, at least one helical strake about the structural element, and at least one ramp to provide a transition from the structural element to the helical strake.09-03-2009
20090242207STRAKE SYSTEMS AND METHODS - There is disclosed a system comprising a structural element; at least one strake holder connected to the structural element; and at least one flexible helical strake connected to the at least one strake holder.10-01-2009
20090274521SYSTEMS AND METHODS FOR SELECTION OF SUPPRESSION DEVICES - method for determining a vortex induced vibration (VIV) suppression device configuration for a structure, comprising determining one or more technical parameters of the structure; determining VIV suppression performance for at least 2 different VIV suppression devices; determining installation and manufacturing or purchase costs of the at least 2 different VIV suppression devices; determining future costs for the at least 2 different VIV suppression devices; calculating total costs for the at least 2 different VIV suppression devices; and selecting a device with the lowest total costs that meets a desired level of VIV suppression for the technical parameters.11-05-2009
20100014922VIV AND/OR DRAG REDUCTION DEVICE INSTALLATION SYSTEMS AND METHODS - There is disclosed a system comprising a structural element; a transport tool carrying a plurality of VIV and/or drag reduction devices; and an installation tool adapted to remove a VIV and/or drag reduction device from the transport tool and to install the device around the structural element.01-21-2010
20100050921SUBSEA INSTALLATION SYSTEMS AND METHODS - There is disclosed a system comprising a vessel floating in a body of water, a line comprising a first portion connected to the vessel and a second portion in the body of water, a tool connected to the second portion of the line, the tool in the body of water below the vessel, a stationary apparatus connected to the second portion of the line, the stationary apparatus in the body of water below the vessel, and a mechanism on the vessel connected to the first portion of the line, the mechanism adapted to keep the line taut as the vessel heaves up and down.03-04-2010
20100061809SYSTEMS AND METHODS FOR REDUCING DRAG AND/OR VORTEX INDUCED VIBRATION - There is disclosed a system for reducing drag and/or vortex induced vibration of a structure, the system comprising a fairing comprising a dampening mechanism adapted to dampen the rotation of the fairing about the structure.03-11-2010
20100098497VORTEX INDUCED VIBRATION SUPPRESSION SYSTEMS AND METHODS - A system comprising a subsea structure beneath a body of water, subject to a water current; an installation vessel floating on the body of water; a line connected to the subsea structure and the installation vessel; and one or more vortex induced vibration suppression devices connected to the line, which have been lowered from the vessel to be installed on the subsea structure.04-22-2010
20100139384CURRENT TANK SYSTEMS AND METHODS - There is disclosed a current tank system comprising a first current tank adapted to produce a first current in a first direction, and a second current tank adapted to produce a second current in a second direction. There is also disclosed a method of testing a sample, comprising exposing the sample to a first current in a first current tank, and exposing the sample to a second current in a second current tank.06-10-2010
20100150662VORTEX INDUCED VIBRATION SUPPRESSION SYSTEMS AND METHODS - A system comprising a subsea structure defining an interior of the system, the structure subject to a water current; a sleeve exterior to the subsea structure, covering at least a portion of an outside surface of the subsea structure; and a vortex induced vibration suppression device exterior to the sleeve. 06-17-2010

Patent applications by Donald Wayne Allen, Richmond, TX US