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Match Document Document Title
9035781 Apparatus and method for automatically detecting and alerting of gas-out conditions for a gas appliance during operation  
A gas appliance monitoring apparatus for automatically detecting and alerting to a “gas-out” condition of a gas appliance during operation, and/or for alerting to the presence of prolonged...
8791826 Method and device for fire detection in enclosed environments  
A method for fire detection in enclosed environments (1) subject to explosion protection regulations out of which an air-dust mixture is filtered while the concentration of dust of the air-dust...
8607645 Time delay adjustment mechanism for sprinkler system water flow detector  
A water flow detector has a spring driven mechanical timer responsive to the movement of a lever. The lever is connected to a paddle. The paddle is responsive to the flow of water in a pipe. The...
8576084 Accuracy improvement in flowmeter systems  
A flowmeter method and system. In an implementation, a signal is received from a flowmeter and a value is determined based on the signal. The value is compared to a threshold. A heartbeat value is...
8264360 Fluid flow indicator with automatic alarm timer for low pressure/low flow applications  
A highly sensitive low loss and low flow fluid flow switch is coupled with an automatic timer and/or optional transmitter to indicate the flow of gas to an appliance and to automatically start a...
8264361 Fluid flow indicator with automatic alarm timer for high pressure/low flow applications  
A highly sensitive low loss and low flow fluid flow switch is coupled with an automatic timer and/or optional transmitter to indicate the flow of gas to an appliance and to automatically start a...
8077018 Smoke detector  
To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air...
7969318 Flow detector with alarm features  
The disclosed invention relates to detecting a flow condition in a fluid supply system. The invention is particularly useful for detecting flow in a toilet system. The flow detection device...
7879226 Flow indicator for showing blocking of filter cotton  
A flow indicator for showing blocking of filter cotton, being installed in a pipe line of a spraying head for the purpose of showing and controlling blocking of filter cotton in a filter in...
7570173 Device to dissipate gases created in the event of a quench of a superconducting magnet  
Device for dissipation of gases created in the event of a quench of a superconducting magnet has a quench tube and a front sealing element closing the quench tube on the magnet side. The quench...
7260496 Pressure detector and method of diagnosing blockage of impulse lines  
A pressure detector for detecting a high side pressure from a high pressure side impulse line and a low side pressure from a low pressure side impulse line includes a high side pressure variance...
6860988 Fluid filtration system with fluid flow meter  
A water filtration system incorporating a fluid flow meter has a modular turbine casing assembly in which a turbine is located between upstream and downstream casing elements of identical shape...
6688532 Controller, temperature controller and heat processor using same  
A controller controls a physical variable such as temperature of a controlled system. A variable calculator calculates and output a manipulated variable on the controlled system based on of a...
6441744 Regulator diagnostics system and method  
Apparatus for performing diagnostics through a regulator is disclosed. The pressure regulator is disposed in a fluid flow passage and has a throttling element moveable in the flow passage. A stem...
6331820 Explosion proof water flow detector  
A paddle type flow detector for an explosive environment is mountable onto a pipe. The detector includes a structure for mounting to a pipe, a substantially sealed switch housing containing an...
6121884 Gas flow detector  
A gas flow detector (10) includes a casing (12) with an inlet (14) for connection to a gas source and an outlet (16) for connection to a gas using appliance. Between the inlet and outlet there is...
6114823 Circuit and apparatus for sensing fluid flow  
A circuit and apparatus for magnetically sensing fluid flow through a conduit. The circuit includes a sensor and a sensor magnet for biasing the sensor in an on condition. A second magnet...
6052058 Filter integrity monitoring system  
A method and system for monitoring integrity of a filter (25) of a smoke or fire detector system. The system has a detector chamber (14) into which light is passed from a light source incorporated...
5898375 Siphon alarm and restarting mechanism  
The invention includes a system for monitoring the performance of an automatic dosing siphon utilized in reservoir which is a part of a wastewater treatment system. The siphon includes a bell type...
5798697 Exhaust/supply direction indicator  
An apparatus for detecting the flow direction of a fluid from an apparatus or between two apparatuses such as a biohoods, fume cabinets, or filters. The device includes a conduit horizontal plane...
5650564 Fluid drip detection system  
A fluid drip detection system which is not prone to false alarms caused by the presence of dirt or solid particle contaminants in the fluid. The fluid drip detector comprises; a conducting hollow...
5631634 Flow and pressure sensor  
A pressure sensor assembly includes a disk entirely of metal and having a plurality of circumferentially spaced petals, separated by a plurality of radially extending slots. The slots extend from...
5583490 Rupture disk monitoring apparatus  
A monitoring apparatus for monitoring the condition of a pressure relief rupture disk disposed in a pressure relief conduit is disclosed. The monitoring apparatus includes an electrically...
5410298 Fluid flow direction detector  
An apparatus for detecting the flow direction of a fluid between two enclosed spaces, such as hospital rooms, includes a conduit extending along a horizontal plane and adapted to receive the...
5183983 Flow switch assembly for fluid flow monitoring  
A basic housing for a fluid flow monitoring assembly comprising a sensing leakproof elongate hollow body formed from a non-magnetic, metallic material and pivotally mounting internally of same a...
5091612 Magnetically actuated proximity flow switch  
A flow switch adapted to be attached to a pipe is designed to trip a switch at a preset flow rate. The switch employs a bending metal blade which deflects in the flow stream to move a magnet...
5057821 Filter sentry apparatus  
An apparatus including a housing secured to a filter web, wherein the housing includes a reciprocating rod directed orthogonally through the housing relative to the filter web, whereupon plugging...
5049860 Two wire flow condition sensing system  
A flow sensor for detecting the absence of a minimum fluid flow in a sprinkler system. The fluid acts upon a vane positioned in the fluid path. Movement of the vane controls the position of a...
5021619 Flow responsive switch apparatus  
A liquid flow switch apparatus is provided for connection to ducting wherein liquid flows forwardly. The apparatus comprises: a support body connectible to the ducting; a stem carried by the body...
4958144 Water-flow detector  
A water-flow detector with an electronic time delay. There is a light-emitting diode and photo-transistor detector pair, a timer comprising an oscillator and a counter, and an alarm relay. The...
4945344 Fluid flow sensor having light reflective slider  
A flow sensor for detecting the absence of a minimum fluid flow in a sprinkler system. The fluid acts upon a vane positioned in the fluid path. Movement of the vane controls the position of a...
4936508 Shower head volume meter with alarm signal  
A shower head volume meter producing an audible or other alarm for indicating when a predetermined volume of water has been delivered. A polite alarm or "beep" is used after a first volume of...
4931776 Fluid flow sensor with flexible vane  
A flow sensor for regulating the air flow rate to a cooling system can be formed as a housing for channeling the flow through a retangular cavity and a one piece vane of bent metal strip which...
4906807 Apparatus for monitoring the flow of fluid media in a pipeline  
An apparatus for monitoring the flow of fluid in the pipeline has a hollow housing with a control element movably supported therein. The control element is movable under the action of the fluid...
4843376 Boat drain plug warning apparatus  
A plastic paddle is pivotally connected to the operating arm of a microswitch. The paddle is positioned in front of a boat's drain opening. The paddle can be swivelled to one side to allow removal...
4827092 Flow monitor with non-rotatable mounting  
A flow meter or monitor arranged on a conduit section through which a medium to be monitored flows includes an actuating element extending through an opening in a wall of the conduit section, with...
4791254 Flow switch  
A switch is responsive to fluid flow within a conduit. It is highly sensitive to variations in flow and forms an effective seal between the fluid and atmosphere. It includes a plastic pivot ball...
4782333 Water-flow detector with rapid switching  
A cylindrical shuttle having a cone-shaped cam surface on one end which slides freely on a timer shaft between a first stop and a second stop which are attached to the shaft. A vane arm driven by...
4725700 Airflow switch for air ducts  
An airflow switch for sensing airflow or lack of same in an air duct comprising a housing base, mounting in side-by-side relation an adjustable range spring and a single-pole double-throw snap...
4449664 Air quantity regulating apparatus for air conditioning  
An air quantity regulating apparatus for air conditioning according to the present invention has two functions one of which is a constant air quantity function and the other is a variable air...
4377090 Through-flow monitor for liquid or gaseous media  
A through-flow monitor of the type which produces a switching signal as soon as the rate of flow through a duct reaches a particular level consists of a generally tubular housing 1 which can be...
4361189 Automatic 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...
4354622 Flow control systems  
Apparatus for controlling the rate of flow of a powdered solid material such as flour, comprising a load cell supporting an inclined plate onto which the flour particles impinge after falling...
4295134 Liquid flow detecting device  
A liquid flow detecting device incorporates a static member arranged to be fixed within a passage through which flow of an operating liquid is to take place and an active member held captive by...
4282413 Liquid flow indicator  
A liquid flow indicator for use in an automatic sprinkler system. The indicator is adapted to be attached to a water line and includes a non-metallic vane retainer or support which is mounted...
4197809 Flow responsive device  
A flow responsive device for use in a fluid flow system to establish a signal when a predetermined flow rate is attained within a flow conduit. The device is adapted for connection to a flow...
4191951 Device for sensing fluid forces  
A device capable of sensing forces exerted by fluids, particularly liquids, and thus may be used to sense fluid level and fluid flow. Preferred embodiments of the device include a switch means...
4181835 Gas flow indicator having a magnetic field sensitive switch that _is responsive to the position of a magnet secured to a piston  
A gas flow indicator including an open-ended cylinder, a piston constrained within the cylinder to move between the ends thereof, and a reed switch positioned on the outside of the cylinder for...
4143255 Device for detecting fluid flow  
A tubular section is provided through which fluid can flow. A paddle is mounted in the tubular section and is biased by a spring to a "no-flow" position, at least partially across the tubular...
4136330 Device for monitoring the flow and temperature of a coolant  
In an automobile, a device for monitoring the flow and temperature of the coolant in the internal combustion engine, comprising a switch of a supply circuit for an alarm, whose mobile part is...

Matches 1 - 50 out of 68 1 2 >