David C Coakley

6401590, Jun 11, 2002

Jul 24, 2000

09/621669

David B. Coakley - Hyattsville MD
John W. Johnston - Germantown MD
Vincent J. Castelli - Severna Park MD

The United States of America as represented by the Secretary of the Navy - Washington DC

F41F 500

89 111, 180309

A flow blocking device is lowered by cable from a helicopter for insertion into the exhaust gas stack of a fuel burning combustion engine propelling a marine vessel under full engine speed. The wall of the exhaust stack are engaged upon entry of the flow blocking device to insure its retention within the exhaust stack and to initiate in sequence ejection of cooling water into the outflow of the exhaust gas followed by pressurized gas expansion of a flexible hose portion of the flow blocking device into sealing contact with the walls of the exhaust stack to stop exhaust gas outflow and cause back pressure build up to a high engine shut down level.

6416369, Jul 9, 2002

Apr 12, 2001

09/919990

David B. Coakley - Hyattsville MD

The United States of America as represented by the Secretary of the Navy - Washington DC

B63B 2156

440 33, 114242

A marine vessel is propelled under maneuvering control in a selected direction and travel speed through a body of seawater, by propulsion exclusively provided for by one or more submerged towing module pods attached to the underside of the vessel hull at locations between its bow and stern. Each of such towing pods may be attached to the vessel and spaced therebelow by an elongated cable so constructed for enclosure within a drag reducing fairing. Each of such cables has internal portions thereof arranged to electrically conduct current between the marine vessel and the towing pod for controllable operation of its propulsive equipment, while transferring the mechanical towing force so produced to the vessel.

6517289, Feb 11, 2003

Sep 28, 2000

09/670381

David B. Coakley - Hyattsville MD
Richard K. Knutson - Germantown MD

The United States of America as represented by the Secretary of the Navy - Washington DC

F15D 110

405216, 405211, 114243

Components of a flexible fairing shroud are attached adjacent their leading edges to bushings through which the fairing shroud is angularly displaced about a protectively surrounded structure exposed to a fluid medium. Inflow of the fluid medium is thereby accommodated in a direction resulting in inflation of the fairing shroud to a desired streamline shape established and maintained between leading and trailing edges during flow of the fluid medium to substantially reduce vibrations otherwise induced by such flow.

61894753, Feb 20, 2001

Jun 22, 2000

9/598753

David B. Coakley - Hyattsville MD

The United States of America as represented by the Secretary of the Navy - Washington DC

B63G 814

114245

A propelled cable fairing system for towing objects underwater having a plurality of cable fairings, which are individually propelled by motorized propulsion to avoid the thrust of propellers to overcome normally encountered drag heretofore utilized, which required use of longer and thicker cables resulting in a loss of control over the position of the towed object. In addition, the relative position of the propelled cable fairing system is maintained through a set of serially linked motor controllers that sense the relative position of each propelled cable fairing relative to it adjacent propelled cable fairing. Variation in position of the propelled cable fairing from a target, causes increase in speed of the motor or alters its angle of attack in order to keep the propelled cable fairings in predetermined alignment with the adjacent cable fairing. By use of a plurality of rudders, the propelled cable fairing system allows the operator to maintain the towed object at desired horizontal and vertical positions.

62605003, Jul 17, 2001

Jun 22, 2000

9/599580

David B. Coakley - Hyattsville MD

The United States of America as represented by the Secretary of the Navy - Washington DC

B63B 2156

114242

A thrust unit having an engine as an external source of motive power for a marine vessel in distress, is delivered by helicopter air drop to a remote seawater location together with other components of the associated towing system, delivered onto the deck of such marine vessel for operational assembly and connection to the thrust unit in order to initiate emergency towing of the marine vessel while immersed in the seawater adjacent thereto under control of personnel on the marine vessel.