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Class 137/87.03 - Flow rate responsive


Subclass of Class 137 - Fluid handling
Definition: Subject matter wherein the sensor is detecting the variation
No. of patents: 35
Last issue date: 10/30/2007


NumberTitleIssue Date
7287540Method for introducing drag reducers into hydrocarbon transportation systems
Disclosed is a method of reducing drag in a fluid stream. The method includes admixing the components of a drag reducer to form an incipient drag reducer and injecting the incipient drag reducer into the fluid stream wherein the drag reducer components are admixed a...
10/30/2007
7156115Method and apparatus for flow control
A flow control system (10) is provided in which a flow control valve (12) is controlled by a control system (14). The control system (14) measures a flow rate or temperature of a fluid flowing through the flow control valve (12) an...
01/02/2007
7097748Electrolyzer pressure equalization system
An energy storage system has a first pressurized tank for carrying water and hydrogen gas and a second pressurized tank for carrying water and oxygen gas. A first output line connects to the pressurized tank for carrying hydrogen gas from the tank. A second output l...
08/29/2006
6609534Multi-additive injection system for aviation fuel
A multi-additive injection system for injecting required amounts of different additives to flowing fuel in a fuel line (6) comprises a number of additive injection sub-systems (1, 2, 3 and 4). Each sub-system includes a source of additive (7), a pump (13)...
08/26/2003
6567710Program-controlled fluid supply system and controller therefor
A fluid supply system controller includes a processor, a memory subsystem and fluid application code. The memory subsystem is coupled to the processor and stores data and instructions. The fluid application code causes the processor to perform the steps o...
05/20/2003
5829470Differential volume sensing hydraulic control
A valve assembly senses the cumulative volume of hydraulic fluid that has passed to an actuator and senses and subtracts from that cumulative volume the volume of return fluid that has passed from the actuator. When the difference between the volumes exce...
11/03/1998
5507309Pressure differential regulator
An improved pressure differential regulator is disclosed for controlling pressure differentials within a supply source such as an electrolytic cell stack. The regulator is positioned downstream of the supply source and basically includes a first sensing c...
04/16/1996
5257640Fine pressure control system for high pressure gas
A system for precisely controlling gas under high pressure produces an initial gas pressure in a pressure chamber while applying a predetermined amount of power to a heating element located in the pressure chamber and then applies a computed change of pow...
11/02/1993
5232010Drain valve
A drain valve is provided for connection to a water supply line for draining water in a vacuum flush aircraft sanitation system. The valve comprises a housing having a fluid inlet and a fluid outlet. The housing also includes a pressure chamber with a dia...
08/03/1993
5146943Apparatus for controlling the flow of a process fluid into a process vessel
A process vessel has an inlet for receiving a process fluid and an outlet for exhausting process fluid into the atmosphere should the pressure within the vessel exceed a preset limit. A pneumatic safety device positioned within such inlet shuts down the f...
09/15/1992
4979639Beverage dispenser control valve and ratio control method therefor
A multiflavor beverage dispenser comprises a microprocessor system for controlling the ratio of diluent to concentrate of a post-mix beverage. The system includes a compact flow rate control module for selectively controlling the flow rates of liquids in ...
12/25/1990
4979529Valves
A fluid supply system (10) for delivering a supply fluid to a washdown facility and for automatically diverting contaminated run-off to the sewer. The fluid supply system (10) includes a demand valve (13) connected in series in a supply line (11). The dem...
12/25/1990
4972873Shuttle valve with spike-apply damping
The shuttle valve (10) has a valve member (30) which includes first (32) and second (36) diameter sections disposed within small diameter (22), reduced diameter (24), and enlarged diameter (26) bore sections of a stepped bore (14) located in a valve body ...
11/27/1990
4892114Flow-sensing shutoff valve
A flow-sensing shutoff valve connectable between upstream and downstream portions of a hydraulic system comprises a valve body having pressure entrance and return exit ports connectable to the upstream portion of the system, and pressure exit and return e...
01/09/1990
4795129Normally closed fluid switching logic element
A normally closed fluid switching logic element has a plurality of radial ports to a first chamber. A poppet, connected to a piston within the element, moves between an open position off its poppet seat and a closed position. In the open position another ...
01/03/1989
4616806Valve
A valve device for insertion in the fuel line of an internal combustion engine between the engine and the fuel pump therefor and adapted to impede the flow of fuel to the engine in response to a reduction in pressure in the lubricating oil system for the ...
10/14/1986
4616480Control system for the engagement and disengagement of an exhaust gas turbocharger
A control for the engagement and disengagement of an exhaust gas turbocharger in which the charging air pressure of the internal combustion engine is used as control magnitude for the engagement and disengagement. Unfortunately, this charging air pressure...
10/14/1986
4561513Steering device for a hydrostatic-drive vehicle, in particular a crawler-mounted earth-moving machine
An hydraulic steering device for a crawler-mounted vehicle, in which a couple of pressure-regulating steering valves controls the rotation direction and speed of two respective rolling trains of the vehicle, is described. Each of the valves is provided wi...
12/31/1985
4542627Cooling apparatus for air conditioner and refrigeration systems
A cooling apparatus for an air conditioner or a refrigeration system for reducing the cost of operation and maintenance without utilizing electricity, without the need of a supply of fluid that is specially pressurized and without the deposition of noneva...
09/24/1985
4535797Automatic shut off valve
An automatic shut off valve comprising a housing having a main inlet, an outlet, a user inlet and a user outlet. A valve assembly is contained within the housing and is movable between an open and a closed position. In its open position, the user inlet an...
08/20/1985
4381816Self-draining heat exchanger
A self-draining heat exchanger that is particularly adaptable in solar heat systems that drains automatically when the flow of liquid such as water is interrupted. The exchanger includes a plurality of tubes arranged for sequential flow of liquid therethr...
05/03/1983
4361189Automatic fire extinguishing and alarm system for mobile homes
A self-contained fire protection system can be supplied in kit form and is specifically adapted for installation by a novice in prefabricated or site built housing, such as, a mobile home, travel trailer or like building structure. The system comprises an...
11/30/1982
4305669Mixing apparatus
Mixing apparatus is described in which a plurality of chemical materials are to be incorporated in a carrier liquid, which may be a solvent, such as water, and which is quantitatively predominant, some of the chemical materials being incompatible if broug...
12/15/1981
4263971Fire and explosion suppression apparatus
Suppression apparatus comprises a plurality of pressurized containers of fire extinguishing material arranged in the troop and/or engine compartment of an armored vehicle, the containers having pressure sensors which provide output indications of their op...
04/28/1981
4232748Spray-assisted pneumatic stone-working apparatus
A pneumatically operated stone-working tool has a tool drive, a spraying device for spraying the work area with a liquid and a control assembly for opening and closing the pneumatic line. The control assembly includes a valve plunger rotatably and linearl...
11/11/1980
4196588Margin valve
A supply or demand margin valve for use in hydraulic systems having at least one load provided with hydraulic fluid under pressure by a main pump, a pilot pump and at least one control valve for the load. The margin valve includes a valve body having a bo...
04/08/1980
4184505Fuel flow rate measuring device
A fuel flow rate measuring device comprising a control rod axially movable in proportion to the rate of flow of air flowing through a suction pipe, a ball disposed in a taper bore and adapted to be moved in the taper bore by the control rod, the taper bor...
01/22/1980
4180088Water shutoff system
Water supply line to the home has a water flow sensor therein and a valve therein. When water flow is sensed, the valve is turned off, as when a leak occurs. Such a leak may be caused by failure of a component in the system, such as a burst pipe or leaky ...
12/25/1979
4166084Bubble maker
A Bubble Maker to be used for adding air fresheners, deodorants, cleaners, perfume or water to air space in the form of bubbles which are then absorbed into the space to be treated....
08/28/1979
4159853Pressure control unit for a vehicular hydraulic braking system
There is disclosed a dual-circuit brake-force distributor wherein the control force of one circuit is transmitted to the other circuit through a floating intermediate piston. In order to achieve a highly sensitive control, the intermediate piston is provi...
07/03/1979
4109967Brake-force distributor for dual-circuit brake systems
There is provided a brake-force distributor, wherein the normally controlled rear-axle brake circuit is no longer influenced by the distributor if the front-axle brake circuit has failed. This is achieved by arranging the valve seat at a sleeve held in th...
08/29/1978
4029074Fuel valves
This is a valve for controlling the flow of fuel to an internal combustion engine in response to engine coolant temperature thereby preventing engine operation at full load above a selected coolant temperature....
06/14/1977
4007754Flow control system
In a process for controlling a particle flow system which is to be operated at slightly above the velocity at which saltation occurs, a cross correlation technique is used to determine the spread of particle velocities in the system and this is compared w...
02/15/1977
4000856Fog/spray system and apparatus
Apparatus for producing a fog/spray as a coating medium for articles. The apparatus comprises a trigger actuated gun having an inlet connected to a source of hydraulically pressurized spray fluid, wherein the pressurizing medium and drive source is itself...
01/04/1977
3974742Lock valve assembly
A lock valve assembly is provided in a hydraulic control system for a double acting hydraulic jack which is adapted to permit the desired substantially unrestricted flow of inlet fluid selectively to either end of the jack under all operating conditions a...
08/17/1976
 
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