To Cascaded Plural Devices Patents (Class 137/819)
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Patent number: 11035496Abstract: A three-way (3-way) Micro-Electro-Mechanical Systems (MEMS)-based micro-valve device and method of fabrication for the implementation of a three-way MEMS-based micro-valve are disclosed. The micro-valve device has a wide range of applications, including medical, industrial control, aerospace, automotive, consumer electronics and products, as well as any application(s) requiring the use of three-way micro-valves for the control of fluids. The discloses three-way micro-valve device and method of fabrication that can be tailored to the requirements of a wide range of applications and fluid types, and can also use a number of different actuation methods, including actuation methods that have very small actuation pressures and energy densities even at higher fluidic pressures.Type: GrantFiled: April 29, 2019Date of Patent: June 15, 2021Assignee: CORPORATION FOR NATIONAL RESEARCH INITIATIVESInventor: Michael A. Huff
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Publication number: 20100108167Abstract: Embodiments of the disclosure may provide a supersonic ejector assembly. The assembly may include a housing manufactured from a solid piece of material, a first ejector assembly positioned in a first bore formed in the housing and secured therein by a first input side flange positioned over an input end of the first bore and an output side flange positioned over an output end of the first bore, and a second ejector assembly positioned in a second bore formed in the housing and secured therein by a second input side flange positioned over an input end of the second bore, the second bore terminating into the first bore proximate a suction input of the first ejector assembly.Type: ApplicationFiled: September 9, 2009Publication date: May 6, 2010Applicant: DRESSER-RAND COMPANYInventors: Harry Allan Kidd, Carlos M. Young, Kim M. Carapellatti, Jamieson V. Bowen, Michael J. Bauer
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Publication number: 20090038699Abstract: A microdevice for multistage-mixing of process fluids which has plurality of freely-detachable units connected to each other without using pipes, wherein a microchannel for flow of the process fluids and a channel for flow of a heat-exchange medium are formed in the microdevice by mutual connection of a plurality of the units and the microdevice is locally and independently temperature-controllable.Type: ApplicationFiled: August 4, 2008Publication date: February 12, 2009Applicant: FUJIFILM CorporationInventors: Youichi NAGAI, Kazuhiro MAE, Nobuaki AOKI
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Publication number: 20080105315Abstract: Low pressure off gases such as from dry gas seals may be recompressed to a higher pressure using multiple tandem supersonic ejectors in which upstream ejectors operate at a higher nozzle exit Mach number than down stream ejectors and all ejectors are operated at exit Mach numbers greater than 1.Type: ApplicationFiled: May 31, 2007Publication date: May 8, 2008Inventors: Kamal K. Botros, John Geerligs, Hasan Imran
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Patent number: 7000638Abstract: A diverter valve includes a valve bore having a set of valve seats associated with each fluid outlet port. Each set of valve seats is at least partially separated from one another by a flow channel. The valve seat configuration increases the impact area for the valve element. As a result, the impact force upon seating against the valve seats is reduced. Moreover, by including flow channels between the sets of valve seats, the switching force and performance of the valve element is not adversely affected.Type: GrantFiled: January 26, 2004Date of Patent: February 21, 2006Assignee: Honeywell International. inc.Inventors: Raymond R. Tseng, Bruce Larsen
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Patent number: 6827095Abstract: A modular microfluidic system includes a plurality of discrete microfluidic modules each capable of performing at least one operation and at least one microfluidic coupling device for fluidically coupling the modules to perform a sequence of operations. The microfluidic modules and coupling devices may be constructed according to various techniques. In one embodiment, coupling devices are fabricated from multiple layers and each include a fluidic inlet port, a fluidic outlet port, and at least one sandwiched stencil layer having a microfluidic channel formed therein. Also described are integrated microfluidic systems and methods capable of performing various sequences of operations.Type: GrantFiled: April 25, 2002Date of Patent: December 7, 2004Assignee: Nanostream, Inc.Inventors: Stephen D. O'Connor, Christoph D. Karp, Eugene Dantsker, Marci Pezzuto
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Patent number: 6798859Abstract: A branch amplifier card for a nuclear reactor control rod drive control system is provided. The control system includes a control processor, a plurality of transponder cards arranged in clusters with each cluster under the control of a branch amplifier card. The branch amplifier card is configured to receive commands from the control processor, send the converted commands to transponder cards under the control of the branch amplifier card and to a downstream branch amplifier card, receive an acknowledge word from transponder cards under the control of the branch amplifier card, add AC voltage threshold level information about the transponder cards under the control of the branch amplifier card to the acknowledge word, permit transponder trouble information attached to the acknowledge word to remain in the acknowledge word, and resend the acknowledge word including the transponder trouble information to an upstream branch amplifier card.Type: GrantFiled: August 18, 2003Date of Patent: September 28, 2004Assignee: General Electric CompanyInventors: William Michael Steiner, Craig Miles Smith, Leonid Boris Sheikman, Craig Ernest Leighty
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Patent number: 5697402Abstract: A system for mixing first and second polymer melt flows and directing a mixed polymer melt flow to one and another downstream locations includes a control valve having an inlet port for receiving the first polymer melt flow, and a pair of outlet ports, and a fluidic valve for forming the mixed flow of the first and second polymer melt flows and directing the mixed flow to one of a plurality of downstream locations. The fluidic valve is provided with a primary supply port for receiving the second polymer melt flow, a pair of secondary supply ports which are fluid-connected with the primary supply port at a mixing intersection, and a plurality of discharge ports extending from the mixing intersection. Each discharge port directs the mixed flow of the first and second polymer melt flows to a respective downstream location. A pair of branch conduits is provided which fluid-connect one of the pair of outlet ports of the control valve to a respective one of the secondary supply ports of the fluidic valve.Type: GrantFiled: March 29, 1996Date of Patent: December 16, 1997Assignee: BASF CorporationInventors: John A. Hodan, Matthew B. Hoyt, Otto M. Ilg
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Patent number: 5540248Abstract: A fluidic sound amplification system couples successive laminar proportional amplifiers through acoustic radiation between output and input horns to avoid the propagation of null offset signals. A second approach to obviating DC null bias in a fluidic sound amplification system comprises splitting the input signal, effecting a selected time delay on a portion of the signal such that the bandpass frequencies and dead zones or cancellation frequencies respectively of the amplified signals are 180.degree. out of phase and combine to produce a near uniform frequency response. A third approach is to use multiple parallel elements in each stage of amplification in such a manner that mechanical errors cancel each other out.Type: GrantFiled: November 15, 1994Date of Patent: July 30, 1996Assignee: Defense Research Technologies, Inc.Inventors: Tadeusz M. Drzewiecki, R. Michael Phillippi
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Patent number: 5271431Abstract: A microvalve in multi-layer structure is proposed, where an inlet connector, a return connector and an outlet connector are produced by planar structuring of material layers. The microvalve has a first and a second stage, which is disposed behind the first stage in respect to the flow direction of the fluid. In the first stage the flow direction of the fluid is directed into a cavity formed by two chambers by means of a flexible tongue, which in the position of rest is oriented parallel to the flow direction of the fluid. At least one outlet connector is disposed in the second stage.Type: GrantFiled: August 7, 1992Date of Patent: December 21, 1993Assignee: Robert Bosch GmbHInventors: Michael Mettner, Thomas Grauer
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Patent number: 4934409Abstract: A fluidic gainblock for amplifying AC pressure signals having an additional lement known as a "T" junction added to the interconnection region between the stages of an LPA gainblock. Where normally there would be direct coupling between LPA's in a staged gainblock, there is now provided a path for the interstage flow noise and DC bias to exit prior to entering the next stage. This gainblock now allows as many stages to be added as needed in a gainblock as the elimination of the DC bias prevents the saturation of the gainblock. Interconnection flow noise is now minimized or eliminated completely and only the pressure signal is allowed to enter the next stage via the perpendicular branch of the "T" junction.Type: GrantFiled: January 2, 1990Date of Patent: June 19, 1990Assignee: The United States of America as represented by the Secretary of the ArmyInventor: George Mon
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Patent number: 4874016Abstract: A fluidic circuit (10) having two oscillators (22,24) which separately vent to a common volume (78) and receive pressurized fluid inputs along separate flow paths (54,56) is provided with filters (80) positioned both upstream and downstream from each oscillator. Each of the filters (80) is adapted to attenuate oscillator-induced noise and comprises a series combination of an inductive element (82), a capacitive element (84), and an inductive element (86).Type: GrantFiled: February 28, 1989Date of Patent: October 17, 1989Assignee: Allied-Signal Inc.Inventor: Raymond R. Tseng
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Patent number: 4678009Abstract: A fluidic complementary gain changing circuit has three laminar proportio amplifiers, one of which supplies fluid pressure streams to the other two. The latter amplifiers have substantially identical geometries and complementary gain curves at any given supply pressure, relative to a gain changing signal constituting a bias pressure applied to control ports of the first amplifier. A differential input signal supplied to the control ports of the two complementary amplifiers modulates the supply streams traversing those amplifiers and results in concurrent high and low gain complementary signals at the respective outlet ports of the overall circuit. Variable resistance elements permit calibration of the circuit.Type: GrantFiled: October 3, 1986Date of Patent: July 7, 1987Assignee: The United States of America as represented by the Secretary of the ArmyInventor: George Mon
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Patent number: 4501293Abstract: Signal output means (11) responsive to gas flow and particularly suited for use in gas flow indicator apparatus (10), has first and second pressure-datum valves (24, 25) arranged in downstream order in a gas conduit (16), the second pressure-datum valve (25) being arranged to open at a lower pressure difference than the first pressure-datum valve (24). A flueric amplifier (15) has a power jet port (28) connected to the gas conduit (16) on the upstream side of the first pressure-datum valve (24), opposed control pressure ports (26, 27) connected respectively to a chamber (22) formed between the first and second pressure-datum valves (24, 25) and to the gas conduit (16) downstream of the second pressure-datum valve (25), and a vent port (30) also connected to the gas conduit (16) downstream of the second pressure-datum valve (25). A pressure signal output by the flueric amplifier (15) in response to gas flow through the conduit (16) may be used to trigger a visual or audio warning device (14).Type: GrantFiled: September 8, 1982Date of Patent: February 26, 1985Assignee: Normalair-Garrett (Holdings) LimitedInventors: Owen D. Furlong, Leonard Moore, Jonathan D. Ward
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Patent number: 4413795Abstract: A fluidic thruster control system and method for guided missiles and the like, which utilizes a fluidic jet interaction device for controlling a downstream fluidic vortex amplifier to modulate exhaust flow through thrust nozzles.Type: GrantFiled: September 5, 1980Date of Patent: November 8, 1983Assignee: The Garrett CorporationInventor: William F. Ryan
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Patent number: 4369811Abstract: A trim circuit for compensating for null offset of the jet stream in a flic transducer, such as an amplifier or jet deflection sensor, includes a flow bias control circuit and a supply sensitive difference flow control circuit. The flow bias control circuit supplies fluid pressure to a pair of symetrically disposed control channels at the input end of the transducer. This fluid pressure tends to decrease the amount of null offset of the jet stream from a central axis of the transducer which intersects a pair of symetrically disposed output channels. The supply sensitive difference flow control circuit removes the null offset remaining after correction by the flow bias control circuit. The supply sensitive difference flow control circuit may be disposed in one of the later stages of a cascaded fluidic amplifier chain or at the control inputs of a single stage transducer or amplifier.Type: GrantFiled: October 20, 1978Date of Patent: January 25, 1983Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Francis M. Manion, Charles E. Paras
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Patent number: 4258754Abstract: A new method and apparatus for fluid sound amplification and detection having enclosed within a predetermined sized housing a fluid supply emitter in combination with a signal input port and spaced a predetermined distance therefrom along an axis offset a determined distance from the fluid supply emitter axis, at least one receiver, the receiver being responsive to gradient differences in fluid pressure as effected by laminar flow of the fluid from the emitter, a filter connected to the receiver for removing relatively high frequency noise, a diaphragm coupler receiving the output of the filter, the coupler having an output for use as a signal input to another predetermined sized housing, emitter, signal input port and at least one receiver combination. A suitable input transducer is connected to the signal input port of the first housing combination and a suitable output transducer such as a recording microphone and oscilloscope is connected to a receiver output of the second housing combination.Type: GrantFiled: January 15, 1979Date of Patent: March 31, 1981Inventor: Charles G. Pickett
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Patent number: 4144906Abstract: A programmable fluid logic module is disclosed which provides an interface etween a plurality of fluid input signals in a pressure-to-electric transducer. The module is arranged so that a plurality of valves may be used to provide a particular combination of signals which result in the transmission of a desired signal from the module to a pressure-to-electric transducer.Type: GrantFiled: July 14, 1977Date of Patent: March 20, 1979Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Maurice F. Funke, John M. Goto
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Patent number: 4113079Abstract: Logic circuitry in combination with a limit switch on a press automatically controls the operation of the press during the press cycle without visual monitoring of the cycle by an operator.Type: GrantFiled: December 23, 1976Date of Patent: September 12, 1978Assignee: Champion International CorporationInventor: John T. Wright
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Patent number: 4019697Abstract: A fluidic control system which automatically schedules and controls power developed by an aircraft during landing approach operation. Fluidic signals are generated in relation to sensed aircraft flight parameters, and these signals are combined in a preselected manner which includes integration of one of the signals by a series feedback capacitance fluidic integrator, to produce a single input signal indicative of a desired rate of fuel flow to schedule aircraft power to the desired level. The single input signal is temperature compensated, then discretely selectively modified in relation to ambient conditions by selectively varying the impedance of fluidic resistive networks to alter the gain of a fluidic amplifier driven by the single input signal. An error signal is then generated and amplified to produce a power output signal which drives a fuel control servo actuator in proportion to the error signal when the latter is small, and drives the servo in a digital manner when the error is large.Type: GrantFiled: August 25, 1975Date of Patent: April 26, 1977Assignee: The Garrett CorporationInventor: Thomas B. Tippetts
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Patent number: 3991790Abstract: Disclosed herein is a patient ventilator apparatus having a pneumatic control system operable in three different modes wherein the apparatus assists the breathing of the patient, controls the patient's breathing in a timed manner, or operates in a combination assist/control mode according to certain predetermined conditions. Fluidic circuitry controls a valved bellows apparatus, which in turn supplies air to a patient subject to limitations of time, volume, and pressure, wherein the gas supplied to the bellows comprises an adjustable oxygen/air mixture. Fluidic timers are provided for use in the control mode of the circuitry, and identical fluidic circuitry combinations are provided for use in the assist mode to automatically trigger the ventilator apparatus into an inspiratory state according to the patient's breathing requirements and to trigger such apparatus into an exhalation state when a predetermined inspiratory pressure is attained.Type: GrantFiled: June 26, 1975Date of Patent: November 16, 1976Assignee: Sandoz, Inc.Inventor: George K. Russell
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Patent number: 3986527Abstract: Improved fluid logic elements are disclosed employing a laminar proportio fluid amplifier connected in a feedback arrangement. Logic functions such as AND, OR, and NOR as well as the flip-flop can be implemented with a reduced power consumption and signal to noise ratio relative to turbulent wall-attachment devices. In one embodiment, the outputs of a first laminar proportional fluid amplifier are input to a second laminar proportional fluid amplifier so as to decouple the operation of the first amplifier from a utilization circuit.Type: GrantFiled: November 6, 1975Date of Patent: October 19, 1976Assignee: The United States of America as represented by the Secretary of the ArmyInventor: George Mon
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Patent number: 3957233Abstract: A fluidically controlled cargo hook control system for use with aircraft including a fluidic circuit actuatable so that the cargo hook can be opened at pilot command during the pilot command mode of operation, so that the cargo hook will automatically open upon cargo touch-down during the automatic touch-down mode of operation, so that the pilot may override the automatic touch-down system to open the cargo hook at his command during the automatic touch-down mode of operation, and so that the entire fluidic system can be placed in the safe-mode condition so that neither automatic touch-down input nor pilot input can open the cargo hook.Type: GrantFiled: July 21, 1975Date of Patent: May 18, 1976Assignee: United Technologies CorporationInventor: David Orin Adams
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Patent number: 3957234Abstract: A fluidically controlled cargo hook control system for use with aircraft including a fluidic circuit actuatable so that the cargo hook can be opened at pilot command during the pilot command mode of operation, so that the cargo hook will automatically open upon cargo touch-down during the automatic touch-down mode of operation, so that the pilot may override the automatic touch-down system to open the cargo hook at his command during the automatic touch-down mode of operation, and so that the entire fluidic system can be placed in the safe-mode condition so that neither automatic touch-down input nor pilot input can open the cargo hook.Type: GrantFiled: July 21, 1975Date of Patent: May 18, 1976Assignee: United Technologies CorporationInventors: William Joseph Mulvey, David Orin Adams, Arthur Lawrence Sivigny
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Patent number: RE30870Abstract: A fluidic system (e.g. amplifier or bistable unit) having an inlet branch and a pair of outlet branches separated by a fluid-flow splitter whereby the fluid is rendered electromagnetically susceptible, e.g. magnetic by incorporating magnetic particles therein, electrostatically responsive by being relatively dielectric, or electrically conductive, so that the fluid flow to the outlet branches may be controlled by magnetic, electrostatic or current flow means or an output may be derived by similar electromagnetic means for controlling an ancillary device, providing an indication of a fluid flow parameter or feedback control of an input parameter.Type: GrantFiled: October 21, 1971Date of Patent: February 23, 1982Inventor: Kiyoshi Inoue