Class 137/459 - Responsive to change in rate of flow

Subclass of Class 137 - Fluid handling
Definition: Apparatus which includes a mechanism which senses and is
No. of patents: 23
Last issue date: 10/30/2007

Number	Title	Issue Date
7287444	Transmission pressure modulation by orificed check valve Disclosed herein are systems and methods of controlling the pressure in a modulation pressure circuit through transmission fluid through an orificed check valve supplementary or in substitution of a computer-controlled pressure regulation solenoid. Detailed informat...	10/30/2007
7225056	Method for checking valves in a program-controlled water-carrying household appliance In household appliances with a safety hose, the stop valve and the control valve are hydraulically connected in series. It is thus impossible, or very difficult, for the user to detect when one of the valves is operating erroneously and not closing completely. The f...	05/29/2007
7063104	Flow-through pressure regulator including a closure member assembly integrated with a housing A flow-through pressure regulator includes a divider, a closure member and a housing. The divider separates a first chamber from a second chamber, and includes a passage that provides fluid communication between the first and second chambers. The closure member move...	06/20/2006
7036756	Anti-sputter fluid flow control apparatus for paint sprayers A fluid spray apparatus with a controlled supply of pressurized fluid delivered through a network of tubes to a spray head having a plurality of stop flow valves and nozzles that will automatically shut off the flow of fluid out of the nozzles when the pressure of t...	05/02/2006
6962318	Pulsed input shutoff valve Methods and devices for shutting off flow in fluid lines by an automated remote sensor signal, when leakage is detected, are disclosed. A shutoff valve has an inlet for connection to the upstream end of the pressurized fluid line, an outlet for connection to the dow...	11/08/2005
6929237	Valve actuation system and methods for pipeline valves The invention is therefore directed to a rotary valve actuating system coupled to a pipeline for a pressurized fluid, the actuating system being coupled to the rotary valve to selectively cause operation of the valve. The valve actuating system comprises at least tw...	08/16/2005
6745957	Fire hose nozzle comprising a safety device to prevent it from being displaced through the action of the water supplying it A fire hose nozzle includes a safety device to prevent the nozzle from being displaced due to the action of the water supplied to the nozzle. The safety device includes a tubular body and a butterfly disc with two coaxial trunnions pivotally mounted on the body. The...	06/08/2004
6543479	Water monitoring system A water monitoring and control system adapted for residential and commercial use automatically shuts off the water supply after a predetermined period of time, whether the flow is intentional or unintentional, thereby preventing damage from leaks and othe...	04/08/2003
6308730	Gas stream monitor A gas stream monitor shall be provided that facilitates the adjustment of the reseat flow. The gas stream monitor consists of a gas-tight casing whose interior is equipped with a seat for a reseat body that is movable inside the casing and is kept in open...	10/30/2001
6119720	Flood control device A flood control device measures fluid flow into a house or building and shuts off the fluid flow if measured flow conditions indicate an overly high consumption due to a leak, break, or other abnormal condition which is present in the plumbing system of t...	09/19/2000
6026838	Method for detecting opening in fluid flow passageway and shutting off flow in response thereto An apparatus detects an opening in a fluid flow passageway such as occurs when a resistance welding cap which is cooled by the fluid flow becomes accidently detached from a welding machine. Upon detection of an opening, an air-actuated pinch lever is acti...	02/22/2000
5967177	Pressure regulating valve A fuel pressure regulating valve for motor vehicles which decreases, the noise behavior of pressure regulating valves frequently found to be annoying. The pressure regulating valve includes a sealing gap, a first part, and a second part of a connection op...	10/19/1999
5950667	Apparatus for detecting opening in fluid flow passageway and shutting off flow in response thereto An apparatus detects an opening in a fluid flow passageway such as occurs when a resistance welding cap which is cooled by the fluid flow becomes accidently detached from a welding machine. Upon detection of an opening, an air-actuated pinch lever is acti...	09/14/1999
5782263	Flood control device A flood control device 200 which measures the volume of fluid delivered in a continuous steady flow to a house or building and which shuts off the fluid flow if a preset maximum limit is reached, indicating overly high consumption due to a leak, break or ...	07/21/1998
5719367	Welding gun coolant control valve assembly A coolant control valve assembly for an automatic welding gun. The assembly includes a manifold having a supply passageway and a return passageway for respectively supplying coolant to and receiving coolant from the welding gun. A controller is used to co...	02/17/1998
5327944	Apparatus for controlling fuel vapor flow Fuel dispensing nozzles, and vapor flow control assemblies useful with such nozzles, are constructed to maximize the possibility of collecting all of the hydrocarbon vapors displaced from the vehicle tank and upward through the fillpipe towards the atmosp...	07/12/1994
5179922	Apparatus for determining change of fuel flow This invention discloses a device by which fuel flow within a pressurized fuel system can accurately be measured to determine if the flow of fuel falls within an acceptable range. If the device detects that the fuel flow is not within normal operating ran...	01/19/1993
5046354	Pressurized storage tank with automatic shut-down in case of leakage A pressurized storage tank for toxic chemicals includes a shut-down valve assembly. Upon detection of a leak, the shut-down valve assembly stops the flow of chemicals from the outlet valves of the tank. The shut-down valve assembly is located within the p...	09/10/1991
4966190	Check valve for a leak detector A check valve for a leak detector used in conjuction with a gasoline dispenser maintains the delivery line under pressure to accelerate translation of the leak detector from the relaxed position through the leak position and to the non leak position unles...	10/30/1990
4735231	Device for preventing leakage in pressure ducts Apparatus for sensing and stopping large and small leakages between one or more tapping locations (6) and a stop valve (2) in a pressurized incoming pipeline (1) for preventing damage due to liquid leaving the line, e.g. water or oil, in buildings or othe...	04/05/1988
4535797	Automatic 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
4180088	Water 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
3971403	Safety valve A safety valve for fluids, comprising on the upstream side a first valve member openable to a degree dependent on the fluid throughput, and, on the downstream side, a second fully-opening valve member capable of being closed sharply by return mechanism an...	07/27/1976

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Class 137/459 - Responsive to change in rate of flow