Maryland's Defense Patent Database

The defense community in Maryland is an R&D powerhouse.

Use this database to see the innovative patents that are poised for commercialization.

Metal fuel combustion and energy conversion system

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NSWCCD

A metal fuel combustion system and method for producing energy. The energy may be used to drive a water vessel such as a submarine. The system and method comprises a combustion device having inner and outer combustion chambers. The metal fuel comprises aluminum, magnesium, and silicon, and is preferably in the form Mg2Al4Si5, and is preferably burnt using water as an oxidant. The byproduct of and the metal oxide byproduct is Mg2Al4Si5O18, which has an appearance and consistency similar to basaltic sea sand. In addition to the combustion device, the system may include additional energy producing elements such as fuel cells, thermoelectric cells, and photovoltaic cells.

Inventors: 
Lynch, William A.; Sondergaard, Neal A.
Patent Number: 
US7900453
Technical domain: 
Engines, Pumps, and Turbines
FIle Date: 
2007-09-05
Grant Date: 
2011-03-08
Grant time: 
1,280 days
Grant time percentile rank: 
23
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method for stacking thermal actuators with liquid crystal elastomer

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NRL

A method comprising arranging a first heating element on a first liquid crystal elastomer, arranging a first layer of thermal paste on the first heating element, and arranging a second liquid crystal elastomer on the first layer of thermal paste.

Inventors: 
Spillmann, Christopher M.; Cylinder, David A.; Ratna, Banahalli R.; Naciri, Jawad; Martin, Brett D.
Patent Number: 
US8040443
Technical domain: 
Engines, Pumps, and Turbines
FIle Date: 
2011-03-16
Grant Date: 
2011-10-18
Grant time: 
216 days
Grant time percentile rank: 
3
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Photoresponsive nanoparticles as light-driven nanoscale actuators

Patent image
NRL

Photoresponsive shape memory nanoparticles have a layered smectic ordering and include a photoresponsive moiety selected from the group consisting of azobenzene, stilbene, and spiropyran. Multiple cycles of contraction and extension in these materials can be controlled by UV and visible light. By changing light intensity and exposure time, the magnitude of actuation can be modulated.

Inventors: 
Naciri, Jawad; Zhou, Jing C.; Ratna, Banahalli R.
Patent Number: 
US8557140
Technical domain: 
Engines, Pumps, and Turbines
FIle Date: 
2011-01-06
Grant Date: 
2013-10-15
Grant time: 
1,013 days
Grant time percentile rank: 
18
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Magnetic field enhanced metal fuel combustion

Patent image
NSWCCD

A magnetic flux enhanced metal fuel combustion system and method for producing energy. The energy may be used to drive a water vessel such as a submarine. The system and method includes a ring-shaped coil of an electromagnet surrounding a combustion chamber. The electromagnet produces a magnetic flux within the combustion chamber that limits contact between charged combustion particles and the sidewalls of the chamber, thereby enhancing the combustion of metallic fuels.

Inventors: 
Sondergaard, Neal A.; Lynch, William A.
Patent Number: 
US7963115
Technical domain: 
Engines, Pumps, and Turbines
FIle Date: 
2008-09-29
Grant Date: 
2011-06-21
Grant time: 
995 days
Grant time percentile rank: 
18
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Corrosion resistant neutron absorbing coatings

Patent image
ARL

A method of forming a corrosion resistant neutron absorbing coating comprising the steps of spray or deposition or sputtering or welding processing to form a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material. Also a corrosion resistant neutron absorbing coating comprising a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material.

Inventors: 
Choi, Jor-shan; Farmer, Joseph C.; Lee, Chuck K.; Walker, Jeffrey; Russell, Paige; Kirkwood, Jon; Yang, Nancy; Champagne, Victor
Patent Number: 
US8580350
Technical domain: 
Engines, Pumps, and Turbines
FIle Date: 
2010-09-22
Grant Date: 
2013-11-12
Grant time: 
1,147 days
Grant time percentile rank: 
21
Claim count percentile rank: 
1
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
LAWRENCE LIVERMORE NATIONAL SECURITY LLC

Photoresponsive nanoparticles as light-driven nanoscale actuators

Patent image
NRL

Photoresponsive shape memory nanoparticles have a layered smectic ordering and include a photoresponsive moiety selected from the group consisting of azobenzene, stilbene, and spiropyran. Multiple cycles of contraction and extension in these materials can be controlled by UV and visible light. By changing light intensity and exposure time, the magnitude of actuation can be modulated.

Inventors: 
Naciri, Jawad; Zhou, Jing C.; Ratna, Banahalli R.
Patent Number: 
US8652352
Technical domain: 
Engines, Pumps, and Turbines
FIle Date: 
2013-08-22
Grant Date: 
2014-02-18
Grant time: 
180 days
Grant time percentile rank: 
3
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Thermally insulating turbine coupling

Patent image
NRL

A rotor assembly, including at least one driven member, e.g., a compressor rotor, and at least one driving member, e.g., a turbine. At least one rotating thermal insulator rigidly attached to either the driven member or the driving member. A coupling feature that includes mating geometric surfaces on the driven member and the driving member, wherein the geometric surfaces are configured to allow radial sliding, relative centering, torque transmission, and axial constraint between the driven member and the driving member.

Inventors: 
Vick, Michael J.; Pullen, Keith R.
Patent Number: 
US8840359
Technical domain: 
Engines, Pumps, and Turbines
FIle Date: 
2011-10-13
Grant Date: 
2014-09-23
Grant time: 
1,076 days
Grant time percentile rank: 
19
Claim count percentile rank: 
3
Citations percentile rank: 
2
'Cited by' percentile rank: 
3
Assignee: 
US NAVY

Aluminum engine cylinder liner and method

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NSWCCD

A method has been found for centrifugal casting engine cylinders. A mold is charged with molten aluminum alloy and particulate silicon monoxide having an average size of 0.01 mm to 0.04 mm. The mold is rotated at a velocity and period of time to distribute the particulate silicon monoxide on an inner cylinder surface. The mold is allowed to cool until the aluminum alloy solidifies. A casting is demolded characterized in a uniform inner cylinder surface of the particulate silicon monoxide in an amount of 25 volume % and thickness 1 to 5 millimeters. The engine cylinders are distinguished in resistance to wear. Cylinder liners show no appreciable wear for over 100,000 miles of use.

Inventors: 
Ferrando, William A.; Wong, Catherine R.
Patent Number: 
US8141615
Technical domain: 
Engines, Pumps, and Turbines
FIle Date: 
2009-08-21
Grant Date: 
2012-03-27
Grant time: 
949 days
Grant time percentile rank: 
17
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Apparatus and method for detecting defects in solid rocket motor propellant

Patent image
NSWCIHD

A solid rocket motor having a liner surrounding a propellant includes an array of transmitter elements and receiver elements disposed within the liner. Transmitter electronics provide the transmitter elements with a transmit signal and receiver electronics receive the outputs of the receiver elements. The outputs are analyzed to determine any defects in the propellant.

Inventors: 
Lopatin, Craig Michael
Patent Number: 
US8525705
Technical domain: 
Engines, Pumps, and Turbines
FIle Date: 
2010-05-20
Grant Date: 
2013-09-03
Grant time: 
1,202 days
Grant time percentile rank: 
22
Claim count percentile rank: 
3
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US NAVY