Matches 101 - 150 out of 341 < 1 2 3 4 5 6 7 >
Match Document Document Title
5942698 Detecting and measuring liquid flow in remote sewer structures  
In the particular embodiments described in the specification, a virtual sewer flow monitor detects flow rate and depth information periodically and supplies it to a scattergraph generator and a...
5926096 Method and apparatus for correcting for performance degrading factors in a coriolis-type mass flowmeter  
Drivers and sensors in Coriolis-type mass flowmeters are used to monitor and predict flowmeter failure modes due to mechanical deterioration during meter operation. The relative values of two...
5920265 Waterline leak detection and shutoff system  
A waterline leak detection and shutoff system comprising an in-line flap valve which includes a pivotal valve flap member having attached thereto a magnet and first magnetically responsive switch...
5894273 Centrifugal blood pump driver apparatus  
A centrifugal blood pump driver comprises a motor housing and the housing contains a motor for rotationally driving the centrifugal blood pump and a controller operatively associated with the motor...
5850183 Air filter restriction indicating device  
An air restriction indicating device for measuring very low ranges of filter restriction (e.g., on the order of 0.0 to 1.5 inches of H 2 O or 0.0 to 0.54 psi) in a micronfilter used in vehicular...
5821870 Monitored security switch assembly  
A monitored security switch assembly includes a switching system, a transmission line, and a monitoring system. The switching system has a load element. The security switch assembly uses an...
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...
5781116 Catalyst flow alarm  
A flow alarm includes a magnetic switch that is maintained open so long as catalyst flow is maintained and an air flow switch that is closed responsive to flow of air through an associated conduit....
5764149 Enhanced capabilities of smoke detectors  
A smoke detector which includes a cover that is attached to a housing base by a mechanical latch. The housing contains a fan that induces an airflow through the housing, a smoke detector that can...
5764148 Electronic water utility safety and monitoring apparatus  
A electronic water utility monitoring system including a control box for the system positionable within the house of a user. Further provided is a first electrical line from the control box to a...
5705987 Circuit for controlling operation of a load after a predetermined time delay  
A circuit for controlling operation of a load, such as an alarm circuit in a fire protection system, in which operation of the load is delayed for an adjustable time period. The load control...
5680110 Blood donation monitoring means for monitoring the flow of blood through a receptacle  
A blood donation monitoring means comprising a support platform (12), being rockably supported by a support (18), a drive means (37, 39, 40) supported operatively connected to the support platform...
5680124 Skew and loss detection system for adjacent high lift devices  
This invention is a method and apparatus for determining whether or not auxiliary airfoils on an aircraft wing are skewed or lost. It employs either of two types of systems and their associated...
5677677 System for monitoring the operation of an evaporator unit  
The difference between the temperature of a heat exchange medium leaving the evaporator unit of a chiller and the temperature of the refrigerant in the evaporator unit is monitored relative to a...
5668535 Filter condition sensor and indicator  
A filter condition sensor and indicator is disclosed. A filter condition sensor and indicator that responds to the presence of a predetermined collection of material in a filter operatively...
5666325 Method and apparatus for monitoring and controlling the dispensing of materials onto a substrate  
A dispensing system includes a robot that controls the positional location of a dispenser that dispenses a bead of material, such an adhesive, onto a substrate and wherein a sensor monitors the...
5640149 Ventilator disconnect alarm  
On method of sensing a ventilation failure measures a ventilation cycle and if the pressure is not maintained throughout the whole of an inspiration period above the setting for the low datum point...
5637789 Fluid leak detector  
A downstream leak detection system for use with pipeline systems, especially those of residential type, is disclosed. The system makes use of a single thermistor, or other sensing element, to...
5625346 Enhanced capabilities of smoke detectors  
A smoke detector unit with a fan that creates an airstream which flows through a smoke detector. Both the fan and the smoke detector are located within a housing that is mounted to the fuselage of...
5611918 Electronic driver for water treatment system UV bulb  
A driver or ballast for the ultraviolet bulb of a water treatment system. The driver includes a step-up transformer and a feedback oscillator connected between the secondary and the primary of the...
5608378 Electric stove warning system  
A fire-preventing warning system for alerting an occupant leaving the premises that a stove burner is on, includes (a) a sensor to detect whether a gas or electric stove is "on", connected to (b) a...
5554976 Method and apparatus for detecting abnormality in gas supply equipment  
An abnormality detecting apparatus constantly monitors even a slight amount of gas which has leaked by checking a gas supply pipe when it is determined that the pressure regulating function of a...
5546073 System for monitoring the operation of a compressor unit  
The electrical current drawn by a drive motor for the compressor unit of a chiller is monitored relative to a real time alarm limit for this electrical current. The real time alarm limit is...
5539385 System for monitoring condenser pressure  
Refrigerant pressure in the condenser unit of a chiller is monitored relative to a real time alarm limit for the refrigerant pressure. The real time alarm limit is computed from time to time by a...
5539382 System for monitoring the operation of a condenser unit  
The difference between the temperature of refrigerant leaving the condenser unit of a chiller and the temperature of water leaving the same condenser unit is monitored relative to a real time alarm...
5504693 Flow control system  
A personal computer is operated in conjunction with an in line flow computer to provide real time flow data on the personal computer screen. Pipeline flow can be regulated and directed from the...
5482078 Water faucet fitting seat capable of producing musical tone or animal howl  
A water faucet fitting seat capable of producing a musical tone or animal howl comprises a base and a sound producing device. The hollow base is provided therein with a channel having one end...
5446449 System for monitoring fluid distribution towards a utilization station  
A monitoring system comprising at least, a first and a second indicator unit each associated with at least one fluid distribution line and each including at least two series of indicators, each...
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 fluid....
5402111 Simplified fluid flow detector  
The invention detects the presence of a liquid or liquid flow, and it is used to control pumping of a well when the quantity of liquid being discharged by the pump per stroke is much less than the...
5377529 Leak detecting device, and method of constructing and utilizing same  
A system for monitoring fluid flow in a water supply for detection of leakage. The system includes sensing means for detecting fluid flow and generating a proportional pulse, timing and memory...
5331309 Drip detecting device and drip alarming device and drip rate control device which incorporate drip detecting device  
A drip detecting device for detecting drips dropping in a drip cylinder, includes an image detecting portion disposed in the vicinity of the outer wall surface of the drip cylinder for detecting...
5320760 Method of determining filter pluggage by measuring pressures  
A method to determine differential filter pressure caused by filter pluggage in a high pressure liquid system operated by a computer-operated control valve without the need for a pressure sensor...
5315294 Fluid metering verification system  
A positive verification of fluid flow from a reservoir through a metering pump is provided by monitoring the downstream fluid pressure fluctuations caused in the fluid conduit by inserting a...
5298886 Fluidic flowmeter equipped with a micro flow sensor  
In a fluidic flowmeter for measuring the flowrate higher than the preset flowrate by use of a fluidic element and for measuring the flowrate lower than the present flowrate by use of a flow sensor...
5294916 Water treatment controller for an evaporative condenser  
An apparatus controls the treatment of water that flows through a cooling system. The electrical conductivity of the water is sensed. A valve control opens a system drain valve when the sensed...
5254976 Liquid leak detector apparatus and method  
Liquid leak detector apparatus and method including a fluid system having two fluid tanks which are fluid flow interconnected and which have a fluid flow-rate switch operative between the tanks for...
5248442 Method and apparatus for measuring shade of hydrocyclone underflow  
A method and means for measuring a characteristic, in particular one associated with particle size, of any of the feed, underflow or overflow streams of a hydrocyclone is provided. Information as...
5218346 Low volume flow meter  
The low flow monitor provides a means for determining if a fluid flow meets a minimum threshold level of flow. The low flow monitor operates with a minimum of intrusion by the flow detection device...
5180287 Method for monitoring fluid flow from a volumetric pump  
A method for determining if fluid is being displaced by a volumetric pump. The volumetric pump (30) includes an inlet cracking valve (46) and an outlet cracking valve (52) disposed on opposite...
H001132 Particle tracking technique for studying fluid flow in industrial vessels  
An apparatus and method for determining the position of an object, especially the position of a movable object in an industrial vessel. The position is determined by the use of two signals having a...
5175530 Non-intrusive liquid flow detection apparatus  
A non-intrusive liquid flow detection apparatus for detecting liquid flow in a select pipe, the flow generating a sound wave of known frequency and wavelength. The apparatus includes a pair of...
5168171 Enclosure for circuit modules  
An enclosure is provided for circuit modules which are mounted as an array in a vertical orientation within a card cage and which are electrically coupled to a back plane positioned rearwardly...
5166667 Intravenous infusion counter and alarm apparatus  
An intravenous infusion counter/alarm for counting the flow of drips, displaying dynamic speed of dripping, and alarming during malfunction, with at least a main body, an adjusting member which can...
5142271 Fluid flow sensor  
A fluid flow sensor for use with a fluid circulating system to indicate a predetermined rate of fluid flow therethrough, fluid flow sensor comprises a hollow fluid flow sensor body including a...
5133391 Method and arrangement for injecting additives  
A method and an apparatus for measured injection of additives into oil products and the like, in particular aims at the filling of fuel in tank farms for transport by tank trucks. Each batch of...
5132024 Hydro-cyclone underflow monitor based on underflow slurry stream shape  
A method is disclosed of controlling the operation of a hydro-cyclone or a circuit embodying same. The method involves the measurement of a variable associated with the shape of the slurry...
5126722 Point of lube monitor  
A piston-type point of lubrication magnetic flow indicator providing a barrel interfit with a bushing having a cylinder portion penetrating the barrel coaxially and a magnetic piston which...
5120198 Pump motor control responsive to conductive flow switch and dual timers  
A protector device connected in series with a pool pump motor. When the automated pool timer contacts close, supplying AC power to pool pump motor, the protector apparatus logic permits...
5111201 System radio transmission of liquid level data and battery saving technique  
System for radio transmission of level data of liquid contained in a tank and for converting to the level data to volume data to be indicated. A transmitter includes a cell for supplying electric...
Matches 101 - 150 out of 341 < 1 2 3 4 5 6 7 >