Matches 301 - 350 out of 662 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >
Match Document Document Title
5283552 Water plumbing instrumentation and control system for recreational vehicles and marine vessels  
The invention provides instrumentation and control of the water plumbing system of a recreational vehicle, marine vessel or other such mobile self-contained environment. In addition to indicating...
5276429 Contact detecting and signaling device  
A portable generator generates a predetermined signal and has an output connected to a first transducer for transmitting the above signal to the body of a first operator (e.g. physician, nurse,...
5272646 Method for locating leaks in a fluid pipeline and apparatus therefore  
A method and apparatus for determining the location of a leak in a fluid containing pipeline. Plural monitoring stations sample fluid flow criteria which change in the presence of a leak. The...
5267670 Fuel dispensing system having a flexible hose with a static dissipator and a fuel leak detector and method of making the same  
A fuel dispensing system and method of making the same are provided, the system comprising a storage tank for the fuel and being disposed in the ground, a dispensing pump disposed above the ground,...
5264833 Automatic leak detector  
A method and apparatus are provided for automatically compensating for gain variations, component aging and drift characteristics of an associated circuit when trying to detect a leak. In the...
5264368 Hydrocarbon leak sensor  
Method and apparatus for detecting and/or monitoring the presence of hydrocarbons in a fluid medium at a remote location, by sensing the presence of hydrocarbon-based fluid in the fluid medium in...
5261268 Gas leak detection system  
A gas leak detection system comprises a flow sensor for detecting the amount of gas flowing through a gas flow passage, a flow signal generator for producing a flow signal representing the quantity...
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...
5240022 Automatic shutoff valve  
An automatic shutoff valve system for installation for instance in the water supply line to a hot water heater includes a sensor to detect leakage electrically by sensing moisture, and then...
5237310 Pump monitor  
A monitor (10) includes a transducer (20) registered with a pump (22) for generating electrical signals reflecting the status of the pump (22). The output of the transducer (20) is conditioned by a...
5229750 Fail-safe leak detector including independent and repetetive sensing means  
A fail-safe system for the detection of water leaks, and for the prevention of damage therefrom. In a home or building which includes a hot-water tank and a water tank for a toilet, e.g., the...
5225812 Protective composite liner  
A protective composite liner for installation inside a vessel, such as a supertanker, is proposed with an outer layer of high strength fibers, a middle layer of flexible, high strength, resilient...
5225643 Differential pressure switch for stored gas pressure vessel  
Two electrically conductive diaphragms which are disposed in generally parallel relation and are symmetrical mirror images of each other are joined to a non-conductive ring. The diaphragms are...
5214387 Electrolytic resistivity leak detector  
The electrolytic resistivity leak detector comprises the method of electrical resistivity to measure the gradual intrusion of aggressive chemicals into the wall of a plastic or fiber reinforced...
5214412 Leak detector method establishing two different threshold levels  
A leak detector has a dual sensitivity due to two thresholds, a first established by a standard leak of the test gas representing the smallest leak to be detected, and the second as a fraction of...
5210526 Automatic leak detection apparatus for process fluids from production and/or research plants, in particular energy plants  
An automatic leak detection apparatus for process fluids from production and/or research plants, in particular energy plants comprises three different and separate sets of sensors, the first of...
5202667 Electric leakage detector for underground storage tank systems  
A fluid detection system by which the presence or absence and identity of fluids may be detected within confined areas, such as those existing within underground storage tank systems and in which...
5196341 Apparatus for detecting micro-organisms  
Apparatus for detecting micro-organisms comprises a sample container releasably received in a container-mounting member which comprises a spillage containment vessel. The sample container has...
5191785 Method and apparatus for identifying and locating a leak in the inner liner of a vessel having a laminated wall structure  
A vessel for containing an electro-conductive fluid, the vessel having a laminated wall structure and including an outer structural shell, an inner corrosion-resistant lining made of electrically...
5190069 Apparatus and method for detecting leaks  
A leak detection apparatus is shown for monitoring leakage from household water systems. Upon detection of a leak, the water supply valve is automatically shut off. A pair of spaced apart wires are...
5188143 Water leakage detection device  
A water leakage detector is disclosed herein sensitive to the presence of moisture, having an elongated sensor strip comprising a pair of conductors separated by insulation. Each conductor includes...
5184083 Apparatus and method for the location of leaks by arrayed potentials and derived vectors  
A system of leak detection in an impoundment including a first impoundment layer containing a brine solution, a second impoundment layer positioned beneath the first impoundment layer and having a...
5177996 Liquid leak detection cable  
A leak detection cable for selectively sensing liquid organic chemicals is not affected by liquid water or water vapor. The cable includes a first electrical conductor and a second electrical...
5177468 Conduit liner monitor  
The monitor allows for the non-destructive determination of the status of a liner disposed within a conduit. The conduit may, for example, be an elbow, valve, pipe. At least one wire is disposed...
5173684 Low molecular weight organic liquid sensor and detection system using same  
The invention provides a sensor whose conductive sheet is composed of substantially non-cross-linked thermoplastic elastomer and conductive carbon. The conductive sheet has a maximum of 70 of Shore...
5159276 Capacitance measuring circuit and method for liquid leak detection by measuring charging time  
A leak detection system and method are disclosed. The capacitance of a leak detection cable is changed by a leaking liquid. A capacitance measuring circuit detects changes in the capacitance of the...
5157379 Method for monitoring a protective garment  
A protective garment, such as a surgeon's glove, is monitored for the occurrence of a breach in that garment. The monitoring is performed using an improved version of the system disclosed in U.S....
5153622 Pressure alarm for water-sealed camera  
In a camera adapted to be sealed against water, a camera having a reciprocating lens barrel, a member for detecting water around the camera, and for controlling the lens barrel, so that the lens...
5151685 Water level alarm apparatus  
An alarm mounted within a housing, such as a drain housing of an air conditioner, including an elongate, planar sponge sheet, the sponge sheet mounted to a collar that is orthogonally affixed to a...
5134377 TDR system and method for detecting leakage of a liquid  
A leak detection system and method are disclosed in which an electrical circuit uses time domain reflectometry techniques to monitor one or more leak detection cables for impedance changes which...
5120129 Spectroscopic cell system having vented dual windows  
An improvement upon spectroscopic cells of the type that have a single window sealed to each window opening of the cell body. The improvement is: (1) to position an additional window at each such...
5117677 Two-stage vacuum monitoring and leak detection system for liquid product containment facilities  
A leak detection system for monitoring an evacuated space which includes a vacuum pump, a low vacuum gauge for continuously monitoring the magnitude of the vacuum in said space, and a vacuum...
5113892 Freeze control and drain valve  
A pressure-activated diaphragm valve which when installed in the main up-stream side of a pressurized line, responds to signals from a control unit to shut off the main supply line and at the same...
5109218 Hydrocarbon detection circuit  
A circuit for detecting hydrocarbons comprises an input circuit receptive of an input signal representative of the electron movement in an unknown sample to be detected for producing a first...
5109215 Means and method for monitoring a protective garment  
A protective garment, such as a surgeon's glove, is monitored for the occurrence of a breach in that garment. The monitoring is performed using an improved version of the system disclosed in U.S....
5109202 Conductive resin structure for connecting metal conductors  
A structure for connecting metal conductors in an oil-leak detector having the conductors covered with porous polytetrafluoroethylene (PTFE) and the metal conductors connected by a band of...
5099873 Water cooler drain pan apparatus  
A polymeric insert is arranged for securement within a base portion of a water cooler housing to accommodate drainage from a water cooler top wall. Drainage and condensation is accommodated to...
5095736 Portable gas cylinder safety delivery system  
The present invention relates to a portable gas cylinder safety containment system removably and operably incorporated with a portable, self powered, toxic gas monitoring system, and both removably...
5091716 Liquid line leak detection method and apparatus  
A method and apparatus for detecting leakage in a liquid transporting line using a line leak detector connected to the liquid line within a manway containing a pumphead of a submersible pump. The...
5091715 Leak detection and alarm system  
A leak alarm system monitors the wetness of a floor. The alarm system comprises a housing having a flat bottom surface and support feet for supporting the housing off the floor such that each one...
5083451 Method and apparatus for monitoring aircraft fuselage deterioration  
In a pressurized aircraft, the net air leakage occurring while the aircraft is pressurized at altitude, i.e., the difference between the mass flow rate of all air supplied to the pressurized...
5084679 Leakage detector using slotted insulated conductors  
A detector for use in a detecting device determines the occurrence of a change in the conductivity of a medium includes electrical conductors. The respective electrically insulated conductors are...
5081864 Leak protected vessel  
A double-walled vessel for containing fluid, the vessel having an annular space between the walls wherein a compressed gas at a pressure higher than any pressure in the inner vessel is maintained,...
5081422 Methods for roof, wall or floor leak detection  
The present invention describes a method to detect leaks in a roof or leaks in basement walls or floors of a building. The detection is achieved by placing a two wire detector in the region to be...
5074663 Multiple internal reflection cell having vented dual seals  
An improvement upon cylindrical MIR element cells of the type that have a single seal at the openings of the cell body through which the cylindrical MIR element extends. The improvement is: (1) to...
5067094 Quantifying isolation valve leakage  
Valve leakage is quantified by measuring a variable that is commensurate with a heat transfer characteristic of the pipe wall (30) and comparing the measurements to data stored in a database (84)...
5065616 Hydrostatic line testing and method  
Apparatus for, and method of, hydrostatically testing whether a line filled with a liquid, such as gasoline, is leaking comprising mechanism for closing one end of the line to be tested and an...
5066944 Fluid detection system with relay release and relatch function  
A fluid status detection system includes a plurality of probes connected to a controller. The controller includes a number of relays that may be programmed to latch either open or closed upon...
5048324 Aboveground tank leak detection system and method  
An apparatus and method for detecting fluid leaks from aboveground fluid storage tanks is disclosed. The invention consists of radially disposing a plurality sample probes in the subsurface soil...
5040409 Sprinkler alarm  
An acoustic sensor and associated electronic circuitry are used to determine when a catastrophic leak (as e.g. may be caused by a sprinkler nozzle being broken off a pipe) occurs in a sprinkling...
Matches 301 - 350 out of 662 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >