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Class 137/118.04 - Flow rate responsive


Subclass of Class 137 - Fluid handling
Definition: Subject matter wherein the sensor is detecting a change
No. of patents: 34
Last issue date: 04/08/2008


NumberTitleIssue Date
7353841Relative pressure control system and relative flow control system
Provided is a relative pressure control system has a simple configuration, but enables accurate regulation of a division ratio of an operation gas, and concurrently makes it possible to securely drain the operation gas from an operation gas pipeline in case of emerg...
04/08/2008
7311115Collection valve for water reclamation system
A collection valve for use in a water reclamation system includes a drain pipe and a collection port assembly. The drain pipe includes an inlet port connectable to a drain line from which gray water is supplied, a collection inlet, and an outlet port. The collection...
12/25/2007
7007707Mass flow ratio system and method
A system for dividing a single mass flow, including an inlet adapted to receive the single mass flow and at least two flow lines connected to the inlet. Each flow line includes a flow meter and a valve. The system also includes a controller programmed to receive a d...
03/07/2006
6973975Universal transportable compressed air foam fire fighting system
A compressed air/foam fire fighting system which is sufficiently compact to be carried on the bed of a pick-up truck includes a water tank, a pump for providing water at substantial pressure to a water conduit, an engine for driving the pump, a foam reservoir includ...
12/13/2005
6874536Gas supply apparatus
An apparatus for supplying pressurized gas to a plurality of gas outlets from an upstream gas supply, in which each of the plurality of gas outlets in use is connected to a common gas feed line via a respective valve, each valve being adapted to close to prevent the...
04/05/2005
6874503Fluid flow regulation system
A fluid flow regulation system has an inlet, an outlet, and an adjustable flow regulator connected between the inlet and the outlet. The regulator has a closed position at which a leakage gas flow through the system is established. An extraction device is provided f...
04/05/2005
6581623Auto-switching gas delivery system utilizing sub-atmospheric pressure gas supply vessels
An auto-switching sub-atmospheric pressure gas delivery system, for dispensing gas to a gas-consuming process unit, e.g., a semiconductor manufacturing tool, without the occurrence of pressure spikes or flow perturbations....
06/24/2003
6532978Method and device for regulating individual sub-flows of a system for conveying fluid media
The invention relates a method and a device for regulating individual sub-flows of a conveying system while the main flow is conveyed in a constant manner. The aim of the invention is to provide a method and a device which enable the sub-flows of the conv...
03/18/2003
6516826Hydraulic flow valve
A hydraulic flow valve apparatus having a valve body providing a valve body cavity with an eccentric sidewall. The sidewall terminates at a frontal surface of the valve body with a conical bottom surface defining a flow aperture at its apex. A sealing sha...
02/11/2003
6418954System and method for dividing flow
A system for dividing a single flow of gas into two or more secondary flows of known, precise values, without requiring a high upstream pressure. The system includes an inlet for receiving the single gas flow, and first and second flow lines connected to ...
07/16/2002
6328072Universal safety device and process for protecting a pipeline
A safety device for protecting a fluid pipeline (1) from an excessive flow of the fluid running through it. The device includes a body (2) delimited by a tubular wall (20), having an upstream end (21) and a downstream end (22) and being selectively insert...
12/11/2001
5927321System for measuring and controlling gas mass flow
A system for measuring and controlling the mass flow of a gas of variable characteristics within a pipe by a metering valve, wherein a Coriolis mass flow meter mounted in the pipe is connected to the valve processor unit to calculate a correction factor f...
07/27/1999
5924432Dishwasher having a wash liquid recirculation system
A dishwasher having a fluid recirculation system which operates in a wash mode for spraying liquid onto objects supported on dishwasher upper and lower racks. The dishwasher includes a pump having a pump impeller disposed within a pump chamber for supplyi...
07/20/1999
5782260Hydraulic flow priority valve
A flow priority valve receives input fluid flow and divides the fluid flow between a primary device and a secondary device. The valve comprises a valve body have a bore formed therein, the bore having first and second ends and first and second annular cha...
07/21/1998
5694967Multi-port proportional flow control valve
A flow control valve for multiport injection of pressurized liquid through an array of injection nozzles for a gas turbine engine is connected by nozzle ports to the engine. In accordance with a first embodiment, the valve includes a slidable valve spool ...
12/09/1997
5377717Hydraulic flow control valve assemblies
A hydraulic flow control valve assembly comprises an inlet port for input fluid flow from a pump, a first outlet port for output fluid flow to a power steering unit, a second-outlet port for output fluid flow to an accumulator of a braking system, and an ...
01/03/1995
5307833Method and apparatus for automatically transferring and measuring wet steam between priority and secondary users
A system by which a supplier of wet steam may allocate and measure the mass flow rate and quality of steam delivered to a demand user and one or more secondary users with the wet steam delivered to each user being measured for purposes of billing. Pressur...
05/03/1994
5284020Fuel supply system for gas turbine engines
A system for supplying fuel to a plurality of fuel injectors of a gas turbine engine is disclosed having first and second fuel distributors and a fuel transfer device which enables fuel to flow from the fuel source to the first and second fuel distributor...
02/08/1994
5165233Charge pressure priority valve
A charge pressure priority valve for supplying a flow of sufficient pressure to energize an auxiliary implement while supplying a nearly constant pressure flow to a hydrostatic fluid circuit includes a valve body having an interior bore with a pump inlet ...
11/24/1992
5165442Differential valve
A fire fighting foam proportioner for use in providing precise proportioning of foam to fire fighting liquid, e.g. water, is disclosed. It includes a tank for the storage of foam concentrate which is loaded using a hand pump. The storage tank is coupled t...
11/24/1992
4924900Adjustable ratio mixing valve
An adjustable ratio mixing valve is disclosed which incorporates an automatic pressure compensating arrangement whereby the fluid pressure immediately upstream of each of the metering orifices is maintained in substantial equilibrium. This arrangement the...
05/15/1990
4914758Fresh water control system and method
The method of controlling operation of a plurality of fixtures comprises the steps of establishing a maximum liquid flow rate and determining which of the fixtures required operation. A determination is then made of the liquid flow rate of the fixture req...
04/10/1990
4821625Valve device for controlling the delivery of pressurized liquid to two separate hydrostatic motors
Valve device for controlling the delivery of pressurized fluid from a common pump to two hydrostatic working motors, one of which is subjected to a load dependent on the speed of the other motor. A volume flow regulator is disposed in the flow path betwee...
04/18/1989
4805659Method of driving a centrifuge and device for carrying out the method
In centrifuges that concentrate liquids that contain suspended solids and wherein the concentrated solids are removed from the centrifuge at a constant rate, the concentration of solids leaving the centrifuge must be regulated. Some of the concentrated so...
02/21/1989
4772387Device for conditioning water containing calcium carbonate and installation constructed with this device
The present invention relates to a device for conditioning water containing calcite and an installation constructed with this device. This device essentially comprises an inner tubular element (10), an outer tubular element (11) and two end tips (12 and 1...
09/20/1988
4465089Flow divider and combiner for traction circuits
A flow divider and combiner for delivering and receiving fluid under pressure to and from independent motors which are linked together for operation by an external force. The unit includes sliding flow control spools and relief valves operable within an o...
08/14/1984
4402336Hydraulic flow dividing and integrating equipment
The invention relates to hydraulic flow dividing and integrating equipment, having a regulating slide valve in its flow path and calibrated throttlings in an admission channel of the flow path. The calibrated throttlings are adjustable as a function of en...
09/06/1983
4337787Pressure regulating hydraulic circuit and valve
For work vehicles, for example, cold weather can be a problem. Disengaging the vehicle clutch (26) aids starting by reducing engine loads during starting. Where the clutch (26) is hydraulically actuated, it can be disengaged by keeping fluid pressures bel...
07/06/1982
4298019Method and system for controlling the fluid level in a drain tank
A method and system for allocating fluid flow draining from a fluid utilizing apparatus to first and second fluid sinks. The fluid flow is entirely routed to the first fluid sink for drain flow rates less than a predetermined flow rate and to the second f...
11/03/1981
4278104System for controlling the number of waste liquid disposal units in operation
A system for controlling the number of waste liquid disposal units in operation is disclosed in which the amount of waste liquid to be produced during a predetermined period of time is forecast, and the forecast result is used to calculate the required mi...
07/14/1981
4254791Flow rate regulator
There is provided an in-line regulator for pressurized fluids. The regulator comprises a regulator sleeve disposed in a tubular, fluid-carrying line or in constituent parts of the line and is provided with at least one wall orifice through which the line ...
03/10/1981
4121601Flow compensated divider valve
A hydrostatic parallel circuit drive system on a vehicle which drives a pair of hydraulic wheel motors which are supplied by a single pump source through a divider valve which senses the flow rate to each of the motors, and when the flow rates to the two ...
10/24/1978
4108198Multirotary energy conversion valve
A multirotary energy conversion valve comprising inlet and outlet passages interposed by meshing pairs of inlet and outlet rotors of unequal constant volume displacements with an enclosed channel in between for fluid energy conversion with additionally at...
08/22/1978
 
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