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.

Automatic hydraulic/pneumatic flow rectifier for bi-directional pumps

Patent image
NRL

An apparatus includes a piston/rod assembly comprising a piston and a housing. The piston is translatable within the housing. The housing comprises a housing power side and a housing filler side. The housing power side comprises a housing power side intake/exhaust tap. The housing filler side comprises a housing filler side intake/exhaust tap. The apparatus also includes a flow rectifier comprising a flow rectifier power side and a flow rectifier filler side. The flow rectifier power side comprises a flow rectifier power side intake/exhaust tap communicating with the housing power side intake/exhaust tap. The flow rectifier filler side intake/exhaust tap communicates with the housing tiller side intake/exhaust tap.

Inventors: 
Mccormick, Michael E.
Patent Number: 
US8650869
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2010-06-07
Grant Date: 
2014-02-18
Grant time: 
1,352 days
Grant time percentile rank: 
24
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Tri-axial hybrid vibration isolator

Patent image
NRL

A tri-axial vibration isolation device having: a passive isolation assembly including a first frame, a plurality of passive lateral isolators supporting the support frame on the base, and a plurality of passive vertical isolators; and an actuator assembly including a second frame, a vertical actuator arranged between the load and the second frame, and a plurality of lateral actuators arranged between the second frame and the passive vertical isolators. The actuators can be piezoelectric elements that change their thickness in response to an electrical signal. The lateral actuators are arranged in oppositely poled pairs. An accelerometer or other sensor provides information to a controller that controls the actuators.

Inventors: 
Corsaro, Robert D.; Herdic, Peter C.; Houston, Brian H.; Klunder, Joseph D.
Patent Number: 
US7586236
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2006-10-10
Grant Date: 
2009-09-08
Grant time: 
1,064 days
Grant time percentile rank: 
19
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Hybrid thin film heterostructure modular vibration control apparatus and methods for fabrication thereof

Patent image
ARL

Microelectromechanical systems (MEMS) include critical devices for various highly sensitive applications. However, MEMS operation may be impaired by vibration. A modular vibration control pedestal for integration with a MEMS is provided according to embodiments of the present invention which includes a piezoelectric perovskite oxide disposed on a substrate and a shape memory alloy component component disposed on the piezoelectric perovskite oxide. In particular embodiments of a MEMS device including a modular VCP, vibration is reduced by at least 50%.

Inventors: 
Cole, Melanie W.; Nothwang, William
Patent Number: 
US7529154
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2007-09-28
Grant Date: 
2009-05-05
Grant time: 
585 days
Grant time percentile rank: 
10
Claim count percentile rank: 
6
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Thermal management smart valve with rupture detection and isolation

Patent image
NSWCCD

The condition of a fluid piping system is monitored by multiple intercommunicative smart valves, each executing a computer algorithm that designates smart valves as critical or non-critical, compares measurement data versus simulation data, and makes decisions based on the critical-or-noncritical designations and the measurement-versus-simulation comparisons. Initial measurement-versus-simulation comparisons are made for downstream pressure, flow rate, and temperature. If a measurement-versus-simulation discrepancy is found in either the downstream pressure or the flow rate, then the algorithm compares a measurement rupture determinant versus a simulation rupture determinant; if a measurement-versus-simulation discrepancy is found in the rupture determinant, then the smart valve is closed. If a measurement-versus-simulation discrepancy is found in the temperature, then the smart valve, if non-critical, is closed; however, if the smart valve is critical, then the nearest upstream non-critical smart valve is closed. Any measurement-versus-simulation discrepancy results, at least, in an alarm or warning.

Inventors: 
Longo, Donald R.; Dalessandro, Donald D.; Dong, Qing; Ferrese, Frank T.; Roach, John M.; Zink, Michael G.
Patent Number: 
US8600566
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2011-02-04
Grant Date: 
2013-12-03
Grant time: 
1,033 days
Grant time percentile rank: 
18
Claim count percentile rank: 
4
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Bearing apparatus having electrorheological fluid lubricant

Patent image
NSWCCD

The present invention, as variously practiced, implements electrorheological fluid (ERF) as a bearing lubricant. Various modes of an inventive rolling element bearing apparatus provide for electrification of inventive electrode components, viz: (first mode) two annular disk electrodes, opposite each other and perpendicular to the two raceway surfaces; or, (second mode) electrically conductive inner and outer races, having an electrically conductive spacer therebetween; or, (third mode) plural electrodes, radially embedded in a race. An ERF lubricative coating remains on one or both raceway surfaces in accordance with Winslow effect principle (first and second modes) or edge effect principle (third mode). An inventive journal bearing apparatus provides for electrification of electrodes that are axially-longitudinally embedded in a journal bearing member, resulting in establishment of edge effect electric flux lines between adjacent electrode pairs, an ERF lubricative coating thereby remaining on the journal bearing member's inward facing surface, contiguous to the shaft.

Inventors: 
Reitz, Ronald P.; Plangetis, Gus F.
Patent Number: 
US7736063
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2007-07-24
Grant Date: 
2010-06-15
Grant time: 
1,057 days
Grant time percentile rank: 
19
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Adaptable multi-element vibration isolator

Patent image
NSWCCD

The present invention's vibration/shock amelioration device, as typically embodied, has a geometric device axis and includes two axial endplates, an intermediate support structure, and at least six truncated-conical resilient (e.g., elastomeric) elements. The intermediate support structure is equidistant between the endplates and lies in a geometric bisector plane that is perpendicular to the device axis. Each resilient element has a geometric conical axis, a larger-diameter axial end, and a smaller-diameter axial end. The resilient elements are fixed between the support structure and an endplate and are arranged symmetrically with respect to the device axis whereby the conical axes intersect the device axis at oblique angles and the smaller-diameter axial ends are closer to the bisector plane than are the larger-diameter axial ends. The intermediate support structure can include a single rigid piece, or a composite unit having a pair of rigid members and a resilient (e.g., elastomeric) member sandwiched therebetween.

Inventors: 
Plangetis, Gus F.
Patent Number: 
US9057415
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2011-06-17
Grant Date: 
2015-06-16
Grant time: 
1,460 days
Grant time percentile rank: 
26
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Bearing apparatus featuring electrorheological fluid lubrication

Patent image
NSWCCD

The present invention, as variously practiced, implements electrorheological fluid (ERF) as a bearing lubricant. Various modes of an inventive rolling element bearing apparatus provide for electrification of inventive electrode components, viz: (first mode) two annular disk electrodes, opposite each other and perpendicular to the two raceway surfaces; or, (second mode) electrically conductive inner and outer races, having an electrically conductive spacer therebetween; or, (third mode) plural electrodes, radially embedded in a race. An ERF lubricative coating remains on one or both raceway surfaces in accordance with Winslow effect principle (first and second modes) or edge effect principle (third mode). An inventive journal bearing apparatus provides for electrification of electrodes that are axially-longitudinally embedded in a journal bearing member, resulting in establishment of edge effect electric flux lines between adjacent electrode pairs, an ERF lubricative coating thereby remaining on the journal bearing member's inward facing surface, contiguous to the shaft.

Inventors: 
Reitz, Ronald P.; Plangetis, Gus F.
Patent Number: 
US7980765
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2010-06-11
Grant Date: 
2011-07-19
Grant time: 
403 days
Grant time percentile rank: 
7
Claim count percentile rank: 
6
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Mount for telemetry receiver

Patent image
AECBC

A mount for a telemetry receiver having a data connector and used in conjunction with a cage for housing animals and having at least one wall. The mount includes a base plate and a pair of rails which are attached to the base plate. These rails are dimensioned to slidably receive opposed sides of the telemetry receiver. The base plate includes at least one opening aligned with the telemetry receiver data connector when the telemetry receiver is inserted between the rails. The opening is dimensioned to receive a data cable therethrough. A fastener then secures the base plate to the inside of the wall of the cage.

Inventors: 
Miller, Dennis B.
Patent Number: 
US8925882
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2013-03-12
Grant Date: 
2015-01-06
Grant time: 
665 days
Grant time percentile rank: 
12
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
UNITED STATES OF AMERICA

Gas journal bearing systems and related methods

Patent image
ARL

Gas journal bearing systems are provided. An exemplary gas journal bearing system comprises a vortex generator, a housing and a journal. The vortex generator is operative to receive a flow of gas and to impart an angular acceleration to the gas. The housing is in fluid communication with the vortex generator, with housing having a first exhaust through which the gas is exhausted. The journal is supported within the housing by a vortex of the gas as the gas swirls along at least a portion of a length of the journal. Methods and other systems also are provided.

Inventors: 
Brown, Robert C.
Patent Number: 
US7918605
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2004-09-29
Grant Date: 
2011-04-05
Grant time: 
2,379 days
Grant time percentile rank: 
43
Claim count percentile rank: 
6
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Rate-responsive, stretchable devices

Patent image
ARL

Rate-dependent, elastically-deformable devices according to various embodiments can be stretched and recovered at low elongation rates. Yet they become stiff and resistive to stretching at high elongation rates. In one embodiment, a rate-dependent, elastically-deformable device includes an elastically-deformable confinement member; one or more filaments placed inside the elastically-deformable confinement member; and a fluid that substantially fills the remaining volume inside the elastically-deformable confinement member. The resistance force to extension of the device is designed to increase as the extension rate of the device increases. At low elongation rates the filaments can readily slide past each other. At high elongation rates, the fluid transforms to a less flowable material that greatly increases the force and energy required for elongation; or transforms to a non-flowable material that resists elongation. The devices thus can be stretched and recovered at low elongation rates, but become extremely stiff and resistive to stretching at high elongation rates.

Inventors: 
Wetzel, Eric D.; Nenno, Paul T.
Patent Number: 
US9303717
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2013-06-26
Grant Date: 
2016-04-05
Grant time: 
1,014 days
Grant time percentile rank: 
18
Claim count percentile rank: 
7
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY

Method for terminating a rope

Patent image
NAWCAD

A method for terminating a rope sliding a socket over the rope which includes unlaying the outer strands of the rope, sliding a wedge onto the core such that the outer strands surround the wedge, the wedge includes a central bore axially aligned with the socket, further sliding the wedge such that the core enters the central bore and is terminated by the wedge, pressing the outer strands of the rope against the wedge, sliding the socket over the wedge such that the outer strands are captured between the wedge and the socket, and swaging the socket such that the outer strands are secured.

Inventors: 
Defelice, Matthew
Patent Number: 
US9377080
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2014-10-30
Grant Date: 
2016-06-28
Grant time: 
607 days
Grant time percentile rank: 
11
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY

Method of changing fluid flow by using an optical beam

Patent image
NRL

The application of an optical beam redirects sheathed micro-fluidic flow without direct interaction with the sample. The hydrodynamic properties of the sheath are locally modified due to optical absorption and heating, resulting in a spatial shift of the sample flow. The technique can result in up to 100 μm shift at peak flow velocities of 19 mm/sec.

Inventors: 
Lou, Janet W.; Villarruel, Carl A.; Schermer, Ross
Patent Number: 
US8528582
Technical domain: 
Mechanical and Fluid Systems
FIle Date: 
2012-04-26
Grant Date: 
2013-09-10
Grant time: 
502 days
Grant time percentile rank: 
9
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY