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| Number | Title | Issue Date |
| 4842162 | Apparatus and method for dispensing fluid materials using position-dependent velocity feedback Apparatus and method for dispensing fluid materials wherein the fluid is discharged from a nozzle at a rate controlled by a metering valve having a seat and a stem moveable with respect to the seat to modulate the flow. A servo-actuator connected in a fee... | 06/27/1989 |
| 4796651 | Variable gas volume flow measuring and control methods and apparatus A method and apparatus for measuring gas flow volume in a system (of the kind in which the amount of gas flowing in a duct can vary in response to the variation of area of a variable area orifice in a duct and/or in response to changes in the total pressu... | 01/10/1989 |
| 4763681 | Process for controlling the flow of a fluid in a valve and apparatus for carrying out said process Process for controlling the flow of a fluid through a valve having a given section and a movable valve member, in which the pressures of the fluid which are upstream Pupstream and downstream Pdownstream of the valve and the position ... | 08/16/1988 |
| 4735225 | Method and apparatus for drawing and regulating the output and pressure of a liquid additive The invention provides a method and an apparatus for drawing a liquid from a reservoir and regulating the output and pressure of the liquid in order to inject it in precise proportions into another liquid flowing in a distribution system with a predetermi... | 04/05/1988 |
| 4718443 | Mass flowmeter apparatus This invention relates to a method and apparatus for a liquid mass flowmeter. The flowmeter apparatus gives correct flow regardless of changes in density, viscosity, or composition of the liquid and corrects flow in spite of errors common in currently use... | 01/12/1988 |
| 4690163 | Method and apparatus for regulating fluid flow A method for regulating the flow volume of a fluid medium and apparatus therefor wherein the actual value of the flow volume of the fluid medium is measured and an analogous signal is generated representing the actual value. A signal representing a desire... | 09/01/1987 |
| 4660587 | System for producing uniform velocity distribution of fluids in conduits Apparatus for producing uniform velocity distribution of fluids in conduits using a non-homogeneous resistance element. A system is described using a non-homogeneous resistance element together with, in the preferred embodiment, a homogeneous resistance e... | 04/28/1987 |
| 4660588 | Method for temporarily storing fluids A method of temporarily storing a producer unit effluent, during the transmission of the effluent from the producer unit to a user unit at a predetermined user unit flow rate, in which excess producer unit effluent is passed to a storage unit through a si... | 04/28/1987 |
| 4544207 | Process for the uniform distribution of a two phase mixture In a process for the uniform distribution of a two phase gas/liquid or liquid/liquid mixture comprising delivering a first stream of said mixture to a point, and dividing the first stream at the point into at least two streams, the improvement comprising ... | 10/01/1985 |
| 4508127 | Fuel mass flow measurement and control system A turbine engine fuel measuring and control system which incorporates a fluidic density sensor which is unaffected by variations in the physical characteristics of the fuel supplied to the engine.... | 04/02/1985 |
| 4492248 | Apparatus and method for slack flow elimination in a slurry pipeline A method and apparatus for protecting against the abrasion of pipe walls in a slurry pipeline caused by slack flow when the pipeline is operated in the batch mode, i.e., when one or more water batches and one or more slurry batches are transported through... | 01/08/1985 |
| 4437489 | Gas flow controller A flow controller having a volume, a pressure transducer coupled to said volume, a first valve coupled between a source of gas under pressure and said volume, a second valve coupled between said volume and a reference volume, a third valve coupled between... | 03/20/1984 |
| 4373549 | Mass flow/pressure control system An input valve having an input that can be coupled to a source of pressurized gas is open during first portions of successive cycles and closed during the remainder. A volume V is connected between the output of the valve and a load, and gas flows through... | 02/15/1983 |
| 4257437 | Liquid flow control A method and apparatus to control the flow of liquid through a valve, especially at very low levels down to about 0.5 ml/hour, by monitoring the liquid level in a column of liquid using a sensor, for example a photo-electric cell, which is moved along the... | 03/24/1981 |
| 4230137 | Apparatus and method for slack flow elimination in a slurry pipeline A method and apparatus for protecting against the abrasion of pipe walls in a slurry pipeline caused by slack flow when the pipeline is operated in the batch mode, i.e., when one or more water batches and one or more slurry batches are transported through... | 10/28/1980 |
| 4197868 | Flow control system and control method for parallel flow process equipment A control system and a method for regulating the division of a single feed stream between two or more pieces of processing equipment operated in parallel. The feed stream enters a three-way valve and is then equally divided into two smaller streams which ... | 04/15/1980 |
| 4176690 | Regulator for a damper assembly A regulator for a damper assembly operable to control the flow of conditioned air through a supply duct. The regulator includes a pressure responsive member connected to the damper assembly to vary the position thereof within the supply duct in accordance... | 12/04/1979 |
| 4037335 | Method of controlling a mobile suction device for sucking suspendible material from the bottom of a liquid body, and an apparatus for carrying out the method This invention is directed to an apparatus comprising a suction device having at least one nozzle for sucking suspendible material as a suspension from a bed of said material, means for producing suction in the nozzle and means for moving the nozzle horiz... | 07/26/1977 |
| 4022604 | Apparatus for cooling newly formed glass containers In the cooling of newly formed glass containers, the containers are moved from blow molds and placed on what is termed a cooling "dead plate". The dead plate is supplied with air under pressure which is fed into the casting forming the dead plate. The war... | 05/10/1977 |
| 4017053 | Fluid pressure monitoring safety system A shut-off valve in a fluid line closes by spring pressure and/or line pressure and incorporates a control chamber wherein pressurized control fluid acting on a piston opens the valve in opposition to the spring pressure and/or line pressure. A 3-way actu... | 04/12/1977 |
| 3945402 | Laminar flow pipe system A pipe system for conveying fluids having a straight pipe section with a Reynolds number exceeding 2200 by reason of the critical values of interior surface roughness of the pipe and of turbulence at the pipe section inlet, such values being defined, resp... | 03/23/1976 |
