Class 251/24 - Venturi or line flow effect assisted

Subclass of Class 251 - Valves and valve actuation
Definition: Subject matter in which the valve has the opening or closing
No. of patents: 25
Last issue date: 06/03/2008

Number	Title	Issue Date
7380293	Safety valve for toilet tank A filling system for a toilet tank prevents continual flow to the tank in the event of a leak from the tank by providing a hydraulically actuated safety valve for halting water flow to the filling valve in the event that the water flow continues for a time longer th...	06/03/2008
7069941	Electronic faucets for long-term operation An electronic faucet (10) mounted on a countertop (12) includes a housing, at least one fluid inlet line (24a, 24b) extending into the housing, a fluid outlet (46) from the housing, a solenoid (142, 143) for op...	07/04/2006
7040595	Constant flow rate expansion valve A constant flow rate expansion valve includes a refrigerant passage having a fixed flow path cross-sectional area smaller than that of a refrigerant inlet, a differential pressure control valve for controlling the differential pressure (P1−P2) betwee...	05/09/2006
6968856	Mechanically automated fluid consumption limiting apparatus A mechanical automatic fluid consumption limiting apparatus for limiting flow through a primary flow line includes an actuating line, a control line, a rotary meter, a control assembly, an actuating valve, a diaphragm valve on the primary line, an eductor and an eng...	11/29/2005
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
6732996	Gas cylinder valve A gas cylinder valve comprises a valve body (10) having a valve chamber (30), an inlet passage (28) and an outlet passage (34) therein. An obturating body (38) is movable relative to a valve seat (40) in the valve body. A va...	05/11/2004
6196249	Pressure regulating method and apparatus The pressure of hydraulic fluid which is supplied to the continuously variable transmission in the power train of a motor vehicle is regulated by an apparatus wherein an adjustable pilot valve can receive fluid from a pilot conduit leading to a pressure r...	03/06/2001
5988911	Soap and water dispensing system A washing soap dispensing system and method of manufacture comprising a wand adapted for the discharge of water therefrom in a second mode of operation and for the discharge of water and soap in a first mode of operation. The washing wand is constructed w...	11/23/1999
5810328	Electrically controlled valve An electrically controlled valve which is used for controlling the opening area of a connection between a high pressure chamber and a low pressure chamber. The valve is embodied as a solenoid valve and has a valve seat on which a deflection point is provi...	09/22/1998
5476243	Electromagnetically actuated valve particularly for slip-controlled hydraulic brake systems in motor vehicles A valve having a magnetic armature, which is moved longitudinally in a valve dome; a valve tappet of this armature carries a closing member of a seat valve, which is open when in the rest position. The seat valve is disposed in a valve chamber, from which...	12/19/1995
5247958	Safety valve, especially for a fuel tank vent pipe The valve, mounted on a vent pipe, allows the passage of gas in both directions, but prevents any escape of liquid fuel. The valve comprises a closed containment 7 equipped with a lower inlet port 8 and with an upper outlet port 9 which are connected to t...	09/28/1993
4997459	Gas pressure relief system The gas distribution system has a main gas line in gas flow connection with several components including a gas pressure safety structure. A pressure regulator is located on a front or forward portion of the main gas line and reduces the gas pressure at a ...	03/05/1991
4671485	Solenoid-operated pilot valve with adjustable flow control A solenoid-operated pilot valve of the diaphragm type which includes an assembly for controlling the flow of liquid through the valve. The valve has particular although not exclusive utility for irrigation purposes. The valve includes a diaphragm chamber ...	06/09/1987
4596375	Hydraulic control of subsea well equipment A control system (10) employable for purposes of effecting the operation of a plurality of actuable devices, which are located at a subsea site, from a position that is remote therefrom. More specifically, the subject control system (10) is particularly s...	06/24/1986
4552172	Pressure-limiting hydraulic valve A pressure-limiting valve for hydraulic fluids comprises a stepped switching piston which is loaded by a closing spring to oppose high fluid pressure obtaining in an inflow duct of the valve. Radial transverse bores branch from an axially-extending bore i...	11/12/1985
4519574	Auxiliary controlled valve disposed in a drilling string An auxiliary controlled valve including a valve body (8) displaceable against a valve seat (9) disposed in a drilling string (6) to produce pressure pulses in drilling fluid renders possible a selective closing or opening of a low-resistance transmission ...	05/28/1985
4516604	Pilot operated supply and waste control valve Supply and waste diaphragm valves communicate with each of two load ports 26, 28 and all valves are controlled by a pilot valve 78 and a pressure reversing valve 74. In one form, the pilot valve 356 has a rocker arm valve member 366. The pilot valve 78 ap...	05/14/1985
4505450	Solenoid-operated pilot-actuated valve A solenoid-operated pilot-actuated valve is provided of the diaphragm type which has particular utility for irrigation purposes. The valve also finds industrial utility where it is desirable to control large amounts of flow energy with a small control sig...	03/19/1985
4479631	Hydraulically balanced valve mechanism The present invention is directed to a hydraulically balanced ballcock (10). A unique valve element (60) is translationally slidable within a valve housing (22) provided in the body (11) of the ballcock (10). A washer (74) received on the head (70) of the...	10/30/1984
4384593	Shutoff element for gaseous media with a device for damping self-excited acoustical vibrations in cavities A shutoff element for gaseous media containing a device for damping self-excited acoustical vibrations caused by a cavity in a flow channel, wherein the normally periodically altering position of the dam-up point of the flow at an impact zone of the cavit...	05/24/1983
4235414	Electromagnetic valve for fluid circuits containing impurities The valve comprises a flap controlled in function of the pressure prevailing in a chamber limited by the flap in accordance with an escape circuit being opened or closed by an electro-magnet. The inlet of the escape circuit comprises a filter operatively ...	11/25/1980
4191358	Shutoff device A shutoff device comprising a substantially tubular-shaped housing within which there is fixed at its ends an elastic hose body. The hose body extends in the lengthwise direction of the housing and forms a closable throughpassage which flow communicates a...	03/04/1980
4182323	Breathing apparatus A demand regulator for use in underwater breathing employs a deflector carried by a valve operating lever for movement between the air outlet in the breathing chamber and the mouthpiece tube to reduce the portion of air supplied directly to the mouthpiece...	01/08/1980
4135550	Pinch valve control circuit A control circuit is disclosed for a sleeve-type pinch valve and which control circuit utilizes an internal vacuum condition in a main supply line in which the valve is disposed to retain the elastomeric sleeve of the valve open. A check valve is provided...	01/23/1979
4112978	Valve for an opening of a pressure vessel A valve for an opening of a pressure vessel has a body member defining a fluid flow passage having an inlet and an outlet. The body member is movable between an open position in which the inlet communicates with a hollow of the vessel so that a fluid ente...	09/12/1978

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Class 251/24 - Venturi or line flow effect assisted