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Match Document Document Title
9010359 Safety protection device and control method thereof  
The safety protection device contains a control unit, a transmission unit, and a throttle unit. The control method contains the following steps: step A: setting a condition parameter X of the...
8869824 Check valve and shut-off reset device for liquid delivery systems  
A check valve assembly which in an open position allows liquid to flow in one direction through the assembly including a moving sealing member which engages a seal to prevent liquid flow in a...
8752576 Apparatus and method for mechanically reducing internal pressure of column in refinery or petrochemical process  
Disclosed is an apparatus and method for mechanically reducing internal pressure of a column in a refinery or petrochemical process, which uses a safety relay valve for operating an emergency...
8671972 Safety valve system for overpressure protection of hydraulic circuits  
An overpressure protection system provides for protection of a hydraulic system from elevated pressures. The system automatically stops flow to the system and prevents system pressure from...
8596608 Sub sea hybrid valve actuator system and method  
A sub sea valve actuator system including a piston and cylinder assembly and a return spring arranged in an actuator housing, a hydraulic pump and electric motor assembly associated with the...
8430115 Leak detection system for humidifier  
An electronic leak detection system for home humidifier using the duct air conditioning system. The leak detection system uses a simple sensor in a water collection tray under the humidifier to...
8393352 Control system and method for water supply  
Known water supply systems are fed from a source of water such as a tank (6) via a pump (5) to outlets which are occludable by means of a cock (C1-C3). A water pressure sensitive electrical switch...
8100141 Water supply control assembly with automatic shut-off and duty cycle reset  
A water supply control assembly is disclosed for cutting off the supply of water to a house or building in the event of excessive water consumption. In one embodiment, a valve is secured to a...
8066032 Apparatus for instantaneously terminating movement of flow material through a conduit  
An apparatus for rapidly terminating of the flow of any fluid or particulate material through a conduit responsive to predefined dangerous conditions. A particular application will terminate fuel...
7913714 Check valve and shut-off reset device for liquid delivery systems  
A check valve assembly which in an open position allows liquid to flow in one direction through the assembly including a moving sealing member which engages a seal to prevent liquid flow in a...
7644723 Transmix prevention lock  
A method and apparatus for preventing a dense liquid such as diesel fuel from being dispensed into a storage tank that contains a less dense liquid, such as gasoline fuel and vice versa. The...
7509975 Fluid sensing shut-off devices with timer and methods of operation  
Fluid sensing shut-off devices with timer and methods of operation to shut off fluid flow if a primary shutoff valve sticks in the on condition. An embodiment is disclosed using a microphone to...
7509973 System to prevent excess fluid flow with a secondary resetting shut-off valve assembly  
A system to prevent an excess flow of water to a toilet tank in the event of a failure of a primary flow control assembly including a novel secondary shut-off valve which is automatically disposed...
7357150 Safety shut-off device  
A safety shut-off device for sections of fluid circuits, which in case of damage or the like, have to shut off from each other on safety considerations. The safety shut-off device includes at...
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...
7231934 Shut-off actuator with gas generation device  
A shut-off device, in particular for application in the extraction of natural gas and mineral oil, has a shut-off housing (3) comprising an admission channel (2) and in which a shut-off organ (4)...
7077376 Water saver valve  
The present invention relates to a valve designed to be in series with a toilet water supply line and the inlet of a toilet tank so that water which is flowing into the tank must flow through the...
6467694 Fail-safe structure cooling system  
A method and apparatus for applying a thin film of water to a solar energy impacted surface, especially a building, while frequently testing itself for leaks or breaks in the piping system,...
6460564 Automatic-locking shut-off valve for liquid suction systems  
A rotary-plug shut-off valve (10) of the type having a valve chamber (20) with multiple inlets includes: an actuator chamber (26); a base member (36) forming (a) an end of the actuator chamber...
6186167 Emergency shutdown test system  
An emergency shutdown system for a process control system includes an emergency shutdown (ESD) valve and an associated valve actuator. An emergency shutdown (ESD) controller provides output...
6103079 Anti-leakage apparatus  
An anti-microleakage apparatus is used in a sputtering deposition equipment. A metallic object, such as a wafer, is put in a process chamber. A cryo-pump is used to vacuumed the process chamber. A...
5971011 Water shut-off valve and leak detection system  
An apparatus to permit or stop the flow of water through a conduit is described as having a microprocessor which contains a real time clock, day of the week indication, and an elapsed time clock....
5927316 Safety cut-off system  
A system for transferring a product from a source which includes a safety cut-off feature for preventing the transfer of the product. The system includes a tubular member adapted to handle the...
5893388 Waterflow monitoring device  
A water leak detection valve system is provided including a water inlet pipe for receiving an unlimited amount of water. Also included is a water outlet pipe for supplying various water appliances...
5829470 Differential 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...
5823235 Emergency shut-off mechanism for propane delivery systems and the like  
A safety shut-off system especially adapted for propane delivery trucks and the like utilizes a pressure differential switch to immediately close the outlet valve of the cargo tank in the event...
5771920 Domestic water valve assembly  
A domestic water valve assembly protects against water leaks by closing a valve if a leak is detected. A leak is detected when a water flow rate falls below a predetermined low flow rate for a...
5640990 Flexible conduit failure safety valve  
A safety valve for precluding leakage of a fluid from a ruptured conduit. The inventive device includes a sensing conduit having a center bore and a matrix of bores concentrically positioned about...
5624551 Hydraulic safety circuit for a hemodialysis apparatus  
A hemodialysis apparatus is supplied with dialysis fluid or a dialysis fluid component through a supply loop conduit 12. A shut-off device 22, such as a magnetic valve, is arranged between the...
5607038 Hydraulic control valve assembly  
A hydraulic control valve assembly is described comprising a cut-off valve, a control valve and structure for connection to at least a supply line, a hydraulic apparatus line and a return line....
5535777 Gas flow safety assembly  
A gas flow safety valve assembly having a main housing of generally solid rigid construction with a main interior chamber divided into an upper compartment and a flow through compartment by a...
5503175 Water safety system  
A water safety valve, system and method for detecting and shutting off water flow due to leaks or breaks in a water line in which the water flow is at a very low rate on the order of three to five...
5365970 Gravity flow chemigation system and low level shutoff valve  
A gravity flow chemigation system (10) is disclosed which generally consists of chemical supply tank (37), in which chemical (29) is contained, a supply line (37) connected to the bottom of...
5238020 Hydraulic valve  
This hydraulic valve has a housing (2) with a feed line (12) and a discharge line (14) for a fluid. A sealing point is provided between the feed line and discharge line. A spring acts in the...
5125433 System for electronically controlling the temperature of water delivered to a bath, shower and the like  
A system for selectively delivering cold, lukewarm, warm or hot water to a bath, shower and the like is controlled by water temperature function switches arranged in cascade series at a control...
5107891 Safety device for gas welding  
A safety device for gas welding has a cylindrical main body having a flow path for an inflammable gas. A cylindrical cover is mounted on the outer periphery of the main body in such a manner that...
5014759 Vehicle wheel having valve means to prevent misuse  
A vehicle wheel that includes a valve which has a check device, with the wheel being intended for use with a pneumatic tire that even when operating as a tire which is flat or has otherwise lost...
4926901 Fluid supply line flow control device  
The present invention deals broadly with the field of plumbing. More narrowly, however, it deals with apparatus for controlling flow through a fluid supply line. The preferred embodiment of the...
4830045 Breaker valve  
A main fluid passageway is provided in a main valve body between first and second ports formed and an auxiliary passageway having its opposite ends closed is also formed in the valve main body so...
4817664 Gas pressure regulator  
In a gas pressure regulator a switch valve is provided in a throttle nozzle between an inlet passage and a pressure sensing chamber containing a diaphragm controlling a lever arrangement. The...
4813492 Low pressure shut off device contained within a pneumatic tool  
The invention provides a low pressure shut off device contained within a pneumatic tool that senses the air pressure of an air stream supplied to a pneumatic motor and shuts off the air flow when...
4807661 Fluid control valve  
An apparatus for controlling the flow of fluid through a conduit is disclosed. The conduit permits normal flow of fluid through the conduit and detects abnormal flow of fluid which is due to a...
4721128 Safety Shutoff Valve--electromechanical  
A pressure chamber through which the fuel in the fuel line passes, having a diaphragm moving to advanced position by the pressure in the chamber. A PE cell is arranged with light rays passing...
4691893 Fail safe gate valves and actuators therefor  
There are disclosed several embodiments of a fail safe gate valve and actuator having means for yieldably urging the gate from one position to which it is moved under one or more controlled...
4650154 Blanking cover for pipe  
A blanking cover for a pipe comprises a plate able to close the pipe by tilting or rocking under the action of gravity, about a pivot pin to which it is fixed. A part is fixed to the pin, and an...
4589435 Water shutoff valve  
A water shutoff valve is disclosed in the preferred embodiment comprising a cylindrical body having a valve disk and water flow sensor therein. The sensor is operatively connected to a timer which...
4197867 Relay indicator valve  
A pneumatic relay valve is actuated by a pressure differential determined by the respective surface areas of two opposing surfaces of a piston moveable within the valve body. A first pressure...
4153072 Pilot valve  
A monitor-actuator pilot valve operable to close a safety valve in a fluid flow system reponsive to low line pressure or electrical failure. The safety valve is held open by pressure supplied into...
4150925 Fast acting check valve  
A check valve which closes more rapidly to prevent wearing of the valve seat and of the valve member that seals thereagainst, including a solenoid or other actuator that aids the normal spring to...
4145025 Control device  
A device for controlling the supply of fluid to a valve actuator, thereby controlling the opening and closing of a valve, all in response to an input signal. Means are provided whereby once fluid...

Matches 1 - 50 out of 96 1 2 >