Class / Patent application number | Description | Number of patent applications / Date published |
251011000 | HEAT OR BUOYANCY MOTOR ACTUATED | 49 |
20080251742 | Pressure Control Valve - There is disclosed a pressure control valve comprising: a valve body ( | 10-16-2008 |
20080251743 | Valve for a Container, Preferably a Cylinder Containing High Pressure Gas - The present invention relates to an improved valve ( | 10-16-2008 |
20090095927 | THERMALLY ACTUATED VALVES, PHOTOVOLTAIC CELLS AND ARRAYS COMPRISING SAME, AND METHODS FOR PRODUCING SAME - Thermally actuated valves, photovoltaic cells and arrays comprising same, and methods for producing same are disclosed. In some embodiments, thermally actuated valves are provided, comprising: a first material defining at least one opening; and a beam attached to the first material so as to at least partially cover the at least one opening, wherein the first material and the beam comprise different thermal expansion properties, such that, when a temperature is applied to at least one of the first material and the beam, the beam buckles so as to at least partially uncover the at least one opening. In some embodiments, photovoltaic cells and arrays comprising thermally actuated valves, and methods for producing thermally actuated valves are provided. | 04-16-2009 |
20090189100 | Arrangement for Adjusting a Valve - An arrangement is disclosed for adjusting a valve which has a tappet which is under the effect of a restoring spring. In a housing ( | 07-30-2009 |
20090218530 | HEATER INSERT - The invention relates to a heating element with an electrical resistance heating element, at least one electrical connector line for supplying power to the heating element, a metal body with a connector, through which the at least one connector line and a duct seal, by means of which the connector opening is sealed. The duct seal is embodied with a glass body as a compression glass duct. The invention further relates to a heated expanding material working element for the operation of a thermostatic valve that includes a housing and a moving working rod extending from the housing. | 09-03-2009 |
20090314971 | Mechanically-actuated Microfluidic Valve - A mechanically-actuated microfluidic valve. The valve comprises an inlet port; an outlet port; a thermal bend actuator; and a valve closure member cooperating with the actuator. Actuation of the thermal bend actuator causes movement of the closure member, thereby regulating a flow of fluid from the inlet port to the outlet port. | 12-24-2009 |
20090314972 | Mechanically-Actuated Microfluidic Diaphragm Valve - A microfluidic diaphragm valve. The valve comprises: an inlet port; an outlet port; a weir positioned between the inlet and outlet ports, the weir having a sealing surface; a diaphragm membrane for sealing engagement with the sealing surface; and a thermal bend actuator for moving the diaphragm membrane between a closed position in which the membrane is sealingly engaged with the sealing surface and an open position in which the membrane is disengaged from said sealing surface. | 12-24-2009 |
20100032594 | Freeze protection valve - A thermally actuated valve employs a plunger and bore valve configuration. A thermally expansible wax actuator has an axial length that changes in response to the temperature in a cavity of the valve. The plunger integrally extends from the actuator body and carries a seal. At temperatures above a predetermined set point, the actuator produces axial force sufficient to extend the length of the actuator against a return bias and project the plunger and seal into the bore, closing the valve. At temperatures below a second set point, the axial force of the actuator is less than the return bias and the plunger is withdrawn from the bore, opening the valve. The axial force generated by the actuator is variable and has a non-linear rate of change, providing a valve with a non-linear change flow rate with respect to temperature. | 02-11-2010 |
20100038564 | MICRO-ACTUATOR DEVICE FOR THE USE IN A BIOCHIP OR BIOSYSTEM - The Invention concerns to a micro-actuator device for the use in biochip or bio-system. In order to achieve a micro-actuator device for the use as a micro pump in biosensors or bio-systems, or at least bio-chips, by which the actuation can be steered very precisely and effective, the solution is that the micro actuator consist of a photosensitive actuator element ( | 02-18-2010 |
20100200783 | Integrated Freeze Protection and Pressure Relief Valve - A thermally actuated valve employs a plunger and bore valve configuration. A thermally expansible wax actuator has an axial length that changes in response to the temperature in a cavity of the valve. At temperatures above a predetermined set point, the actuator produces axial force sufficient to extend the length of the actuator against a return bias and project the plunger and seal into the bore, closing the valve. The plunger defines a pressure relief fluid flow path from the valve cavity to the valve outlet. A pressure relief valve is arranged in the plunger and is responsive to pressure in the valve. The pressure relief valve opens to relieve pressure above a pre-determined level. The thermally actuated valve and the pressure relief valve are coaxial and employ a common outlet. | 08-12-2010 |
20100276613 | THERMOSTATIC DEVICE AND RELATED METHOD - A thermostatic device for selectively opening and closing one of more apertures used for controlling the flow of a coolant fluid includes a housing, at least one fixed element and at least one moveable element. The at least one fixed element is fixedly interconnected to the housing. The at least one moveable is moveably connected to the housing. A fluid path passes through the fixed element and the moveable element. The fluid path is opened and closed in response to movement of the moveable element relative to the fixed element such that when the moveable element is in a first position the fluid path is closed and when the moveable element is in a second position the fluid path is open. A temperature responsive bi-metal element is coupled to the moveable element for moving the moveable element between the first position and the second position. | 11-04-2010 |
20110024653 | MUD PULSER ACTUATION - A system and method for transmitting mud pulse signals in a downhole environment is disclosed. In one embodiment, a mud pulser system includes a valve ( | 02-03-2011 |
20110049398 | VALVE UNIT AND APPARATUS HAVING THE SAME - A valve unit and an apparatus having the same include a plug which includes a phase change material in a solid state at a room temperature and a plurality of fine heat-dissipating particles dispersed in the phase change material. The fine heat-dissipating particles dispersed in the phase change material dissipate heat by absorbing an electromagnetic wave energy generated by electromagnetic wave radiation from the outside and block fluid flow in a path formed by a channel. As an external energy source irradiates an electromagnetic wave on the plug, the plurality of fine heat-dissipating particles dissipate heat and the phase change material becomes molten, thus opening the path to allow the fluid to flow. | 03-03-2011 |
20110168927 | Temperature controlled valve core - A temperature controlled valve core comprises a housing including a first and a second tunnels, and a channel; a seat and an adjusting assembly installed in the housing; a rotating component of the adjusting assembly is rotated to actuate a watering valve to move upward and downward to engage with or disengage from the seat to open or close a watering outlet to actuate a heat sensitive element to push an inlet valve to move downward, closing a second intake; and when the watering valve moves upward, an elastic returning element pushes the inlet valve to move upward to close a first intake; the heat sensitive element sense a temperature of mixed cold and hot water to expand or retract a plunger to adjust sizes of the first and the second intakes to maintain the temperature of the mixed cold and hot water at a stable temperature. | 07-14-2011 |
20110198518 | THERMOSTAT VALVE - A thermostatic valve fitted with a housing which comprises at least two mutually apart coolant hookups, further with a thermally expansible device comprising a housing and a push-rod and resting on the housing and operating in concert with a valve element that in turn operates in concert with an annular valve seat, said valve seat being situated between the two hookups, and a spring that biases the valve element toward the valve seat, characterized in that the valve element is in the form of an annular valve disk made by two-part injection molding, where one annular sealing portion is made of an elastomeric plastic and the remaining valve disk is made of a hard plastic, the outer sealing portion cooperating with the valve seat and the inner sealing portion cooperating in sealing manner with a housing of the thermally expansible device when said thermally expansible device is received in the aperture of the annular valve disk. | 08-18-2011 |
20110315903 | ARRANGEMENT FOR ADJUSTING A VALVE - The invention relates to an arrangement for adjusting a valve ( | 12-29-2011 |
20120001102 | HIGHLY CLEAN AND HOT VALVE - A highly clean and high temperature valve apparatus includes a valve driving unit and a valve casing connected to a bonnet supporting a valve stem slidably. A stem portion has one end positioned in a circumferential wall closed at its two ends by upper and lower covers, and supports one end of the valve stem with its other end extending through the lower cover. The stem portion has its ends supported respectively by first and second bellows for closing an axial through hole of the lower cover tightly. A first pipe communicates with a first space isolated by the first bellows, and a second pipe communicates with a second space isolated by the first bellows. The fluid quantities in the first and second spaces are increased or decreased relative to each other, thereby to drive the stem portion supported in a floating state by the first and second bellows. | 01-05-2012 |
20120025113 | DRIVE UNIT FOR A MICRO VALVE COMPRISING A SHAPE MEMORY ALLOY, AND MICRO VALVE - A drive unit for a micro valve comprises a housing, a spring and at least one shape memory alloy element which is attached to the housing in a deflectable manner. The shape memory alloy element is loaded by the spring towards a deflected position and is movable in response to a temperature increase and the shape memory effect activated thereby, into a position which is at least less deflected against an increasing load by the spring. A normally closed micro valve includes a fluid housing, at least one valve seat, a sealing element opposite the valve seat, and a drive unit of the type mentioned above. The shape memory alloy element cooperates with the sealing element and exerts an operating force on the sealing element for closing and opening the valve seat with or against a compression spring force. | 02-02-2012 |
20120104292 | ACTIVE DRAIN PLUG FOR HIGH VOLTAGE BATTERY APPLICATIONS - A drain plug assembly that has particular application for sealing a drain hole in a high voltage battery compartment on a vehicle. The plug assembly includes a plug that inserted into the drain hole. The plug assembly further includes a return spring coupled to the plug and causing the plug to be biased into the drain hole. The plug assembly also includes at least one shape memory alloy device coupled to the plug and a support structure. The SMA device receives an electrical current that causes the device to contract and move the plug out of the drain hole against the bias of the return spring. | 05-03-2012 |
20120126154 | VALVE WITH MATERIAL HAVING MODIFIABLE DEGREE OF PENETRABILITY - The invention relates to a valve ( | 05-24-2012 |
20120161042 | Valve Apparatus - A valve apparatus having a first housing coupled to a second housing. The first housing having a first chamber in fluid communication with a first inlet and a first outlet. The first chamber adapted for receiving a thermal actuator moveable from a first position to a second position in response to temperature of a first fluid in the first chamber. The second housing having a second chamber in fluid communication with a first and a second ports, the second chamber being fluidly sealed from the first chamber. The second chamber adapted for receiving a valve mechanism, which is operatively coupled to the thermal actuator and moveable from a first valve position preventing flow of a second fluid from the first port to the second port to a second valve position permitting flow of the second fluid from the first port to the second port upon actuation by the thermal actuator. | 06-28-2012 |
20120199763 | MESOFLUIDIC SHAPE MEMORY ALLOY VALVE - A mesofluidic valve is disclosed. The mesofluidic valve includes a cylindrical body having a bore formed there though, the cylindrical body including an inlet port disposed at a first end and an outlet port disposed distal to the inlet port and substantially adjacent to a second end of the valve body, a poppet disposed within the bore and moveable substantially between the inlet port and the outlet port, wherein the poppet is configured to cooperate with an orifice carried within the input port, a control element disposed at the second end of the cylindrical body, a shape memory element coupled to the poppet and configured to receive an electrical current provided by the control element, wherein the shape memory element is configured to contract in response to the received electrical current thereby causing the poppet to disengage from the orifice, and a bias element carried within the cylindrical body and configured to cooperate with the poppet, wherein the bias element is configured, in the absence of the electrical current provided to the shape memory element, to bear against the poppet to seal the orifice and the inlet port. | 08-09-2012 |
20120199764 | Valve with Temperature Activated Triggers - There is provided a valve comprising a body, a passageway, a sealing member, a trigger, and a temperature responsive trigger actuator. The passageway is defined by the body, wherein the passageway includes an inlet and an outlet. The sealing member is configured for movement between a closed position and an open position, wherein in the closed position, the sealing member prevents fluid communication between the inlet and outlet of the passageway, and in the open position, the inlet and the outlet of the passageway are in fluid communication. The trigger is configured for movement between a first trigger position and a second trigger position, wherein the trigger cooperates with the sealing member such that, when the trigger is disposed in the first trigger position, the trigger effects interference with movement of the sealing member from one of the open position and the closed position to the other one of the open position and the closed position, and when the trigger is disposed in the second trigger position, the interference effected by the trigger, is removed. The temperature responsive trigger actuator includes a plurality of point trigger actuator portions wherein each one of the plurality of point trigger actuator portions is characterized by a respective shape-changing temperature and is configured such that, for each one of the plurality of point trigger actuator portions, when the temperature of the point trigger actuator portion is below the respective shape-changing temperature, the point trigger actuator portion is disposed in a respective low temperature shape condition, and when the temperature of the point trigger actuator portion is at or above the respective shape-changing temperature, the point trigger actuator portion is disposed in a respective high temperature shape condition. The trigger co-operates with the plurality of point trigger actuator portions such that the movement of the trigger from the first trigger position to the second trigger position is configured to be effected by heating of at least one operative point trigger actuator portion, wherein each one of the at least one operative trigger portion is any one of the plurality of point trigger actuator portions, wherein the heating is sufficient to raise the temperature of each one of the at least one operative point trigger actuator portion above its respective shape-changing temperature. | 08-09-2012 |
20120205562 | AUTOMATIC GAS INTAKE AND EXHAUST VALVE DEVICE - Disclosed is an automatic gas intake and exhaust valve device including a main body part having an orifice hole at one side and an intake and exhaust hole at an opposite side, an opening/closing member movably inserted into the main body part to open/close the intake and exhaust hole, and a coupling member extending along one side of the main body part to couple the main body part with a pipe in the communication state of the pipe. The opening/closing member floats according to a flow velocity of a fluid introduced into the main body part and discharged out of the main body part, to close the intake and exhaust hole, and drops down to the bottom of the main body part by a weight of the opening/closing member to open the intake and exhaust hole if a fluid level is lowered, thereby automatically introduce and exhaust internal air of the pipe and facilities. | 08-16-2012 |
20120211680 | THERMO-HYDRAULICALLY ACTUATED PROCESS CONTROL VALVE - A thermo-hydraulically actuated valve including a housing; a closure member capable of preventing and permitting fluid flow through the housing. An actuation fluid chamber disposed at the housing and sealed from an external environment. A motive force transmitter in force transmissive communication with the closure member. The transmitter being in fluid communication with the actuation fluid chamber; and a heating element in thermal communication with the actuation fluid chamber. The valve being devoid of a dynamic seal between an area of the valve to be contacted by a managed fluid within the valve and an environment outside of the valve. | 08-23-2012 |
20120241653 | MICROFLUIDIC DEVICE WITH FLUID DRIVING CAPABILITY - A microfluidic device includes: a shape memory substrate having a shape memory polymer matrix and a plurality of particles embedded in the shape memory polymer matrix, the shape memory polymer matrix being thermally transformable from a temporary shape to an original shape, the particles being made from a magnetically coercive material; and a microfluidic chip attached sealingly to the shape memory substrate and defining a microfluidic channel. The shape memory polymer matrix is indented inwardly to form an indented space in fluid communication with the microfluidic channel when the shape memory polymer matrix is heated to transform from the temporary shape to the original shape. | 09-27-2012 |
20130015376 | SHAPE MEMORY ALLOY THERMOSTAT FOR SUBSEA EQUIPMENTAANM Kocurek; ChrisAACI HoustonAAST TXAACO USAAGP Kocurek; Chris Houston TX USAANM Green; ChelseaAACI CypressAAST TXAACO USAAGP Green; Chelsea Cypress TX US - A system, in certain embodiments, includes an SMA thermostat. The SMA thermostat includes a body, a sleeve, a biasing spring and an SMA spring. Upon actuation of the SMA spring at a phase transition temperature, the sleeve is configured to shift and expose flow ports formed in the body. | 01-17-2013 |
20130068972 | AIR SHUTOFF SWING GATE VALVE - An air shutoff valve includes a passage for supplying air, a swing gate, a shaft attached to a reset handle, and a spring to urge the gate toward its closed position. A trigger assembly secures the shaft and gate in the open position and includes an actuator, a cam, and a rocker arm. A cam surface of the arm has a notch to receive a sear point of the cam. Movement of the handle against the spring causes the cam contact surface of the cam to follow the cam surface to cause the arm to rotate such that the sear point is received in the notch. Actuating the actuator causes the arm to pivot away from the cam such that the sear point is released from the notch, wherein the spring causes the shaft to move the gate to its closed position. | 03-21-2013 |
20130068973 | Thermal Actuator - The present disclosure provides a thermal actuator which comprises at least two containers containing a first fluid. The at least two containers define interior portions that are interconnected such that the interior portions of the containers are in fluidal communication with each other. The first fluid comprises a first liquid component and a second gaseous component. The thermal actuator is arranged such that a change in a temperature difference between one container and the or another container and within a predetermined range of temperature difference causes a quantity of a fluid contained in the thermal actuator to be transferred from the one container to the or another container such that a mass distribution of the thermal actuator is altered in response to the change in temperature difference so as to cause actuation. | 03-21-2013 |
20130221251 | VALVE ASSEMBLY WITH SHAPE MEMORY MEMBER - A device includes a conduit utilized for vacuum flow and a valve assembly fluidly coupled with the conduit. The valve assembly includes a valve body defining an opening, a valve member moveable with respect to the valve body, and a shape memory member, wherein the shape memory member operates to actuate the valve member to close the opening upon the shape memory member reaching a transition temperature. | 08-29-2013 |
20130327967 | FLUID COOLED SHAPE MEMORY ALLOY ACTUATED VALVE - A valve assembly ( | 12-12-2013 |
20140034855 | VALVE | 02-06-2014 |
20140061515 | VENTING MECHANISMS FOR CONTAINERS - The disclosed device primarily consists of a band, ring, or other piece of shape memory polymer (SMP) or SMP composite in various embodiments that allows or disallows containment. When the SMP reaches its transition temperature (Tg) the SMP provides the means for releasing containment of the pressurized material so as to prevent ignition or explosion of hazardous material. At normal operating temperatures, the SMP is in a deformed shape maintaining an environmental seal to protect the contents of the container. When environmental conditions cause the SMP or SMP composite to exceed its Tg, specified by the operating requirements, the SMP returns to its memory shape in a controlled geometry, rather than simply melting. The return of the SMP to its memory shape causes the venting of the container in different manners depending on which embodiment is utilized. | 03-06-2014 |
20140103232 | SHAPE MEMORY ALLOY ACTUATED VALVE ASSEMBLY - A valve assembly ( | 04-17-2014 |
20140117262 | SHAPE MEMORY ALLOY ACTUATED PILOT CONTROLLED LATCHING VALVE - A latching valve ( | 05-01-2014 |
20140209822 | AUTONOMOUS VALVE WITH TEMPERATURE RESPONSIVE DEVICE - A self-adjustable valve or flow control device for controlling the flow of a fluid from one space or area to another by exploiting the Bernoulli principle, to control the flow of fluid, such as oil and/or gas including any water, from an oil or gas reservoir and into a production pipe of a well in the oil and/or gas reservoir, from an inlet port on an inlet side to an outlet port on an outlet side of the device. The valve includes a movable valve body arranged to be acted on by a temperature responsive device. The valve body is arranged to be actuated towards its closed position by the temperature responsive device in response to a predetermined increase in temperature in the fluid surrounding and/or entering the valve. The temperature responsive device includes an expandable device including a sealed structure at least partially filled with an expandable material | 07-31-2014 |
20140217313 | VALVE FOR OPENING A FLUID LINE - A valve for one-time opening a fluid line for venting a technical system includes an inlet for connecting to the fluid line, an outlet, and a controllable closure arranged between the inlet and the outlet. In the non-activated state the controllable closure closes a passage between the inlet and the outlet. The closure includes a material that changes its phase state in dependence on a control parameter, whereby the passage is irreversibly opened in the activated state. | 08-07-2014 |
20140291558 | Normally Closed Valve for Microfluidic Components of a Polymeric Layer System and Method - A normally closed valve for microfluidic components includes a polymer substrate and a polymer membrane film arranged on the polymer substrate. The polymer substrate has a first chamber, a second chamber, and a fluidic barrier element configured to separate the first chamber from the second chamber. The first chamber is fluidically coupled to the second chamber by the polymer membrane film, and, in an initial configuration, a connection of the polymer membrane film to the fluidic barrier element prevents a fluidic communication of the first chamber to the second chamber. The first chamber is at least partially filled with a substance in the initial configuration, and a transfer of the substance from the first chamber into the second chamber takes place by applying a pressure to the substance. The pressure is chosen to be great enough to disconnect the connection of the polymer membrane film to the fluidic barrier element. | 10-02-2014 |
20140339448 | Fluidic Control System and Method of Manufacture - A fluidic control system includes featured layers. The featured layers include two or more features which collectively form at least one functional component. | 11-20-2014 |
20150028234 | Device for Opening or Closing a Seal Set of a Valve - A device for opening or closing a seal seat of a valve arranged in a pipe for liquid or gaseous media includes a one-time only activation of the valve using a shape memory actuator. The shape memory actuator changes its external shape abruptly when a transformation temperature is reached that is dependent upon its alloy composition. The transformation temperature can be generated by a controllable electrical heating device of the device. | 01-29-2015 |
20150028235 | VALVE, MICROFLUIDIC DEVICE, MICROSTRUCTURE, VALVE SHEET, METHOD OF MANUFACTURING VALVE SHEET, AND METHOD OF MANUFACTURING MICROFLUIDIC DEVICE - Provided is a valve formed of a shape-memory polymer disposed in a flow channel, in which a flow of fluid in the flow channel is adjusted by deformation of the valve. | 01-29-2015 |
20150083944 | ELECTRICALLY CONTROLLED ACTUATING DEVICE INCORPORATING A THERMOSTATIC FUNCTION, AND VALVE - A actuating device includes a fixed portion forming a frame including an inlet intended to receive a fluid, a main outlet and a sampling outlet and a return device for exerting a mechanical force on a movable portion; a movable portion including a shutter moving between an open position and a closed position; a thermostatic device including a conical turning disc, the turning of the disc above a known critical temperature driving the shutter to the closed position of same; a control device allowing a holding force for holding the shutter to be generated, the control device being able to be controlled in such a way that below the critical temperature, the opening or the closing of the valve results from the balance between the holding force and the mechanical force. | 03-26-2015 |
20150292641 | VALVE, IN PARTICULAR A REGULATING OR SHUT-OFF VALVE, FOR LIQUID OR GASEOUS MEDIA - The invention concerns a valve, in particular a regulating or shut-off valve, for liquid or gaseous media having a valve housing ( | 10-15-2015 |
20150300519 | VALVE DEVICE FOR CONTROLLING A FLUID FLOW, IN PARTICULAR FOR CONTROLLING THE COLD AIR FLOW IN A HOUSEHOLD APPLIANCE, SUCH AS A REFRIGERATOR | 10-22-2015 |
20150316165 | THERMOELEMENT AND THERMOVALVE INCORPORATING THERMOELEMENT - A thermoelement and a thermovalve incorporating the same, in which reliable operation is achieved with a simple internal structure, and there is no risk of contaminant jamming. The thermoelement includes a casing, a mounting portion, a shaft, a heat-sensitive medium, and a seal member for drawing the shaft into the casing when the heat-sensitive medium expands. The thermovalve includes a body including a valve body linked to a shaft of a thermoelement, and a seating part on/from which the valve body can be seated/separated. | 11-05-2015 |
20150354719 | SHAPE MEMORY ALLOY ACTUATOR FOR VALVE FOR A VAPOUR COMPRESSION SYSTEM - The invention relates to an actuator for a valve in a refrigeration system. The invention also relates to a valve with such actuator, and to a refrigeration system with such valve. The actuator comprises an elongated Shape Memory Alloy (SMA) element extending along two or more string-like extensions from a distant end to a proximate end in relation to a valve element of a valve. The SMA element, when forming part of the valve, may extend from the distant end to the proximate end connected to a housing of the SMA element, however, electrically insulated from the housing. An encapsulation may provide a thermal resistance, a thermal conductor and/or an electrical resistance between the SMA element and other elements or the surroundings of the SMA element. | 12-10-2015 |
20150369386 | MAGNETOCALORIC VALVE - A magnetocaloric valve is described. The valve is largely energetically self-sufficient and contains the following components: (a) a conduit defining a flow channel; (b) a flow channel blocking member; and (c) a driving device configured to move the flow channel blocking member into and out of the flow channel. The driving device has as key components a magnet, an effective amount of a magnetocaloric material, and a counterpoise mechanism. The driving device is powered by alternately cooling and heating the magnetocaloric material using an ambient heat sink and a production fluid heat source. Alternatively, the driving device is powered by alternately cooling and heating the magnetocaloric material using a production fluid heat sink and an ambient heat source. The valve may be kept open or closed by otherwise preventing movement of a movable component of the driving device, for example a shaft, by means of an electrically actuated shaft latch. | 12-24-2015 |
20160153575 | DRIVE DEVICE AND METHOD FOR CONTROLLING THE DRIVE DEVICE FOR THE GENERATION OF AN ACTUATION MOVEMENT | 06-02-2016 |
20170234447 | METHODS AND SYSTEMS FOR MODULATING AIRFLOW | 08-17-2017 |