Class 137/599.05 - Having digital flow controller

Subclass of Class 137 - Fluid handling
Definition: Subject matter wherein at least one of the parallel flow
No. of patents: 38
Last issue date: 11/13/2007

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Number	Title	Issue Date
7293581	Latching micro-regulator A latching microregulator for regulating liquid flow on micro-scale levels comprises a substrate having an inlet port and an outlet port, a valve element defining a valve chamber for opening and closing the inlet port, and an actuator assembly for actuating the valv...	11/13/2007
6962167	Choke valve A choke valve having a coarse setting choke means and a fine setting choke means placed in parallel to it. The coarse setting choke means is able to be switched over in stages between different degrees of choking with different choke cross sections. The fine setting...	11/08/2005
6901957	Hot gas bypass isolation A bypass line assembly comprising a bypass line for transporting a gas in a flow direction, a bypass valve located at a position along the bypass line, and a manual throttle valve located upstream from the bypass valve, the manual throttle valve comprising a throttl...	06/07/2005
6810308	Apparatus and method for mass flow controller with network access to diagnostics A mass flow controller includes a network interface port and interface software that provide direct access to the mass flow controller. The mass flow controller also includes diagnostic software that permits a technician to execute diagnostics through the network in...	10/26/2004
6269831	Precision volumetric measuring and mixing apparatus An apparatus for mixing a first liquid with at least a second liquid includes a tank having a mixing chamber to which is connected a first and a second supply line from each of a first and a second source of liquid. A gross control valve disposed in each ...	08/07/2001
5938425	Method and device for control of the flame size of gas-fired cooking or baking appliances A device and a method for the controlled reduction of the gas flow Q fed to a burner nozzle of a gas-fired cooking or baking appliance via a gas supply pipe. The gas supply pipe is branched into a number n of partial gas pipes connected in parallel, throu...	08/17/1999
5520333	Tube metering control system Method and apparatus for dispensing a liquid agricultural agent at a desired rate. A source of the liquid is pressurized and passed in parallel though at least one regulating capillary tube of such diameter and length as to regulate the rate of dispensing...	05/28/1996
5411059	Multiple flow rate fluid control valve assembly A multiple flow rate fluid control valve assembly in which the mode of fluid flow is interfaced with the rate of fluid flow has a mode control valve having a switch for selectively setting the valve to either of a continuous fluid flow mode or a pulse flu...	05/02/1995
5273070	Water treatment apparatus Water treatment apparatus having a raw water inlet and a treated water outlet and at least a first and second water treatment tank plus conduit means for passing water from the inlet to the outlet through the first and second tanks in parallel flow relati...	12/28/1993
5247964	Valve with redundancy on closing A valve with redundancy on closing comprises a single valve body, first and second substantially hemispherical hollow valve members disposed inside said valve body, each including an orifice allowing fluid to pass therethrough, independent first and secon...	09/28/1993
5150690	Flow control system A flow control system for use in a compressible fluid-fueled internal combustion engine includes a fluid metering device comprising a plurality of fluid lines for communication between an inlet fluid manifold and a metered fluid manifold. Bistable valves ...	09/29/1992
5069188	Regulated canister purge solenoid valve having improved purging at engine idle Improved idle purging is obtained in a regulated canister purge solenoid valve by communicating the atmospheric chamber space of the regulator mechanism to atmosphere through the canister and providing in the movable wall of the regulator mechanism an ori...	12/03/1991
5056554	Fluid loss, damage prevention and control system A control system apparatus for a fluid distribution system includes a low-voltage circuit and a positive displacement disc in a throughput line such that as fluid displaces the positive displacement disc a magnet associated therewith is also rotated. The ...	10/15/1991
5046686	Clack valve and flap valve with a controlled valve as well as aircraft with controlled valve of this type A controlled valve with clack valve and a clack valve including a controlled valve, as well as an aircraft with a controlled valve of this type, are disclosed. The disclosed controlled valve has a clack valve on its surface. The controlled valve is used f...	09/10/1991
4930552	Drain standpipe A washing machine standpipe that has a drainage outlet in Lifting on an inner tube inside the standpipe uncovers a lower opening on the standpipe, allowing trapped water to escape. When the lower opening is in a closed position by having the inner tube co...	06/05/1990
4868363	Apparatus for supplying a working fluid in an electric discharge machine A working fluid supplying apparatus of an electric discharge machine comprises a main pipe and a branching pipe for connecting a pump for increasing a working fluid in pressure and delivering the thus pressurized working fluid with a nozzle for injecting ...	09/19/1989
4709858	Digital flow control system An arrangement for controlling the flow of fluid in which the fluid is allowed to flow through a selected number of parallel paths of various flow capacities as determined by restricting orifices and cutoff valves. Accurate volume/length of fluid is dispe...	12/01/1987
4664146	Combination economizer valve and locking means for oxygen supply system A combination device for flow-regulation in an oxygen supply system, providing in a unitary device providing both an economizer valve which automatically and safely vents oxygen when the patient's demand or usage is less than the amount being constantly p...	05/12/1987
4656827	Fuel metering system for a gas turbine engine A fuel metering system for a gas turbine engine is disclosed which includes two rotating flowmeters connected to the fuel supply circuit in parallel. The speed of the flowmeters are controlled by a pair of braking motors and tachometers are provided in ea...	04/14/1987
4653530	Fuel control value construction, parts therefor and methods of making the same A fuel control valve construction, parts therefor and methods of making the same are provided, the construction having a housing provided with an inlet adapted to be interconnected to a fuel source and an outlet adapted to be interconnected to a burner. T...	03/31/1987
4644967	Fluid flow control system Disclosed is a dual output, pressure responsive, adjustable, fluid flow control system. It includes first and second flow networks coupled in parallel flow communication, the networks each have first and second flow paths, and the first flow path of flow ...	02/24/1987
4643002	Continuous metered flow multizone air conditioning system In a multizone air conditioning system, a controlled leakage of refrigerant is provided from the high pressure side of the system to an inactive fan coil circuit to raise the pressure therein, such that when that circuit is later brought into an active st...	02/17/1987
4643224	Alarm test device for a sprinkler system An alarm test device for a sprinkler system incorporates test and drain valves, together with a sight glass and a metering orifice into a single test valve, with the option of employing a plug valve as the test and drain valves, and the further option of ...	02/17/1987
4609011	Flow control valve A new flow control valve comprises valve openings, having valve seats opened and closed by poppets, provided in fluid passages extending from an inlet port to an outlet port in the valve body, and a control mechanism to produce a changeover of pilot press...	09/02/1986
4518011	Control valve unit for the cylinder of a fluid actuator A control valve cartridge which may be seated within the end plate of an actuator cylinder has a number of two way, two position solenoid valves placed in series axially and by way of which the space on each side of the piston may be connected by a respec...	05/21/1985
4374785	Metering device for fuel control system A metering device for a fuel control system includes a block having a pair of parallel transverse bores which are interconnected to a pair of parallel longitudinal bores so as to provide a plurality of passageways in which appropriate valves may be placed...	02/22/1983
4285339	Electronic closed loop servomechanism and electronic scuba regulator therefor An electronic closed loop servomechanism for sensing a physical force such as ambient pressure and electronically powered means for performing useful work controlled by said servomechanism. The servomechanism may be used in a breathing gas system such as ...	08/25/1981
4256100	Flow control equipment An anesthesia ventilator is disclosed for controlling the flow of air and/or oxygen through a plurality of binary weighted valves from a fluid regulator source to a bellows assembly. Directly-set minute volume, breath rate and inspiration to expiration ra...	03/17/1981
4248263	Digital fluid flow control apparatus A core removably fits into an open cavity with an outer casing. The walls of the cavity and the core define an upstream manifold, a downstream manifold, and a planar manifold separating partition that lies at an acute angle to a flow plane aligned with th...	02/03/1981
4244396	Digital fluid flow control system In a digital fluid flow control system having a source of fluid at a first pressure and a fluid receiver at a second pressure lower than the first pressure, individually actuatable, digital valve elements interconnect the source to the receiver. In the fl...	01/13/1981
4207919	Digital fluid flow control system An upstream fluid chamber adapted for fluid flow in a given direction is interconnected to a downstream fluid chamber by a plurality of individually actuatable digital valve elements disposed in a plane substantially transverse to the given direction so t...	06/17/1980
4191215	Digital fluid flow rate controller A precision digital flow rate control system particularly suitable for controlling the flow of an inert gas into the atomizing furnace of an atomic absorption spectrometer. The selection of the desired flow rate is made by switching the flow through one o...	03/04/1980
4170245	Digital control valve A digital valve has a valve body with an inlet passage and two outlet passages straddling the inlet passage. A plurality of slots are cut in the body connecting the inlet passage to each outlet passage. Bores in the valve body intersect each slot, and a p...	10/09/1979
4164959	Metering valve An axial flow metering valve includes a valve body having an inlet, an outlet, a valve chamber therebetween and a passage for fluid between the inlet and the valve chamber. A valve member is movable in the valve chamber and includes a number of guide pins...	08/21/1979
4061156	Transition module for a pneumatic sequencer and an associated sequencer The transition module is intended to be assembled with at least three action modules constituting a sequencer and comprises an elementary logical gate having two inputs and one output, two inputs for receiving the output signals of two predetermined actio...	12/06/1977
4000607	Fluid control valve and method Method and apparatus for metering fuel flow to a gas turbine engine includes a first bifurcated movable metering element straddling a pair of opposed metering openings and shiftable to adjust the area of the openings to vary fuel flow from a pump to the c...	01/04/1977
3963146	Liquid-dispensing installation A liquid dispensing installation includes an air separator, a volume-meter, a main flow valve in a main conduit, and a bypass valve in a conduit which bypasses the main flow valve. The main flow valve and the bypass valve are normally open during liquid d...	06/15/1976
3937248	Fluid flow control system employing a plurality of digital valve elements An upstream fluid chamber adapted for fluid flow in a given direction is interconnected to a downstream fluid chamber by a plurality of individually actuatable digital valve elements disposed in a plane substantially transverse to the given direction so t...	02/10/1976

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Class 137/599.05 - Having digital flow controller