|
Match
|
Document |
Document Title |
|
|
4796658 |
Apparatus for detecting basement water
Basement flooding due inter alia, to drain overflow or sump pump failure is a common problem. An apparatus for solving the problem includes a cover for closing a basement floor drain, a tubular...
|
|
|
4797621 |
Leak detector and locator utilizing time domain reflectometry and sampling techniques
A leak detector and locator utilizes an electrical cable disposed in proximity to fluid carrying pipes or other area wherein a leak may occur. Pulses are applied to the cable and the reflected...
|
|
|
4781535 |
Apparatus and method for sensing diaphragm failures in reciprocating pumps
Apparatus for monitoring the diaphragm integrity in a diaphragm pump. A single continuous circuit trace is supported on a pump diaphragm. An electrical circuit is connected to the continuous...
|
|
|
4775855 |
Hose leak detectors
A hose leak detector and a leak detector system for monitoring the leakage of fluid through at least a part of a flexible hose comprises signal generating means operable to generate a warning...
|
|
|
4771246 |
Method for determining the location of a leak in a pond liner formed of electrically insulating material
A system for determining the location of a leak in a pond liner made of electrically insulating material supported by a medium which is electrically conductive consists of a movable nozzle for...
|
|
|
4766557 |
Apparatus for monitoring hydrogen gas leakage into the stator coil water cooling system of a hydrogen cooled electric generator
Apparatus which provides an indication of gas leakage from the interior of an electric generator into a closed circuit water-cooling system for the generator's stator coils. The closed circuit...
|
|
|
4751467 |
System for determining liquid flow rate through leaks in impermeable membrane liners
A method and apparatus for determining the rate of flow of a leak through a geomembrane is set forth. In the preferred and illustrated embodiment, a surrounding lower skirt having a peripheral...
|
|
|
4746911 |
Alarm device for isolated pipe systems
This invention relates to an alarm device for isolated pipe systems. The alarm device in accordance with the invention is characterized in that a transformer device (TR1) arranged to supply a...
|
|
|
4740777 |
Programmable fluid detector
A plurality of probes are electrically connected to a central controller. Each of the probes is capable of providing a hydrocarbon signal, a water signal, and a dry signal to the controller upon...
|
|
|
4740757 |
Method and apparatus for locating leaks in a multiple layer geomembrane liner
A leak detection and location method and apparatus for detection of perforations in a obscure geomembrane liner is set forth. In a typical application, upper and lower liners are positioned...
|
|
|
4736623 |
Leak detector
The leak detector is utilized for determining the presence of a leak in an above ground tank of liquid having a lower specific gravity and a lower electrical or thermal conductivity than water. The...
|
|
|
4725785 |
Directional potential analyzer method and apparatus for detecting and locating leaks in geomembrane liners
A directional potential analyzer method and apparatus using a non-intrusive electrical measurement technique to obtain a precise location of a leak in a geomembrane liner. The method and apparatus...
|
|
|
4724479 |
Shielded, highly radioactive, wet chemical cell for an atomic plant with a contrivance for drip leakage recognition and method for use in a cell of this type
A method and apparatus for detecting leakage in a shielded, radioactive hot ell having drip leakage-endangered sections, including a light source and polarizing element for irradiating the...
|
|
|
4721950 |
Fluid detector
There is a plurality of probes electrically connected to a central controller. Each of the probes is capable of providing a hydrocarbon signal, a water signal and a dry signal upon sensing these...
|
|
|
4720669 |
Geomembrane leak assessment shell shaped probe
A leak assessment shell shaped probe for determining the size of a leak in a geomembrane liner by measuring the electric current density through the liner at locations suspected to contain a...
|
|
|
4719407 |
Automated search apparatus for locating leaks in geomembrane liners
An automated search apparatus is disclosed for detecting leaks in liquid impoundments usually defined by a geomembrane layer. A voltage gradient is created within the impoundment by means of a...
|
|
|
4708015 |
Storage tanks with secondary containment means and non-visual leak detection means
A storage tank system especially useful for storing liquid gasoline comprises a rigid inner tank encased by a flexible outer jacket to form a closed space, detecting liquid in the closed space and...
|
|
|
4697643 |
Temperature-compensated pressure controller, operationally reliable extinguisher provided with such a pressure controller and process for filling such a pressure controller
Extinguisher provided with a temperature compensated pressure controller, comprising a propelling agent and an extinguishing agent under gaseous form, wherein it comprises a sealed chamber filled...
|
|
|
4695787 |
Device for detecting and locating penetration of water into a marine acoustic streamer
A device for detecting water penetration into a marine acoustic streamer with segments interconnected by connectors. Each connector positioned between any two adjacent segments is provided with...
|
|
|
4689484 |
Photoelectric leak detection system for double-walled tanks and the like
A photoelectric leak detector system for double-walled tanks and the like including a pair of optical fibers extending substantially from the top to the bottom of the annulus of the double-walled...
|
|
|
4682156 |
Solvent detector
An apparatus and method are provided for detecting solvents, including hydrocarbons. The apparatus includes a hydrocarbon-soluble plastic rod which interconnects a mass or weight and a weighing...
|
|
|
4682157 |
Polar fluid detection system unaffected by power line voltages
A detector for sensing the presence of polar fluids includes a pair of detection probes and a circuit for providing an oscillating voltage across the probes. A power supply for the detector...
|
|
|
4677371 |
Sensor for detecting the presence and location of a water leak
A coaxial cable and a bare wire are aligned in parallel relationship and affixed within insulation covers which have openings therein so as to partly expose both the bare wire and the outer...
|
|
|
4677263 |
Air spring position switch
A position switch is set forth which is adapted to generate a signal whenever two masses, such as a vehicle sprung and unsprung mass, are at or nearer than a desired spacing. The switch includes a...
|
|
|
4673926 |
Liquid containment and leak detection system
A liquid pipeline leak detector and containment system comprising an enclosure for a pipeline having a leak detector at the base thereof, said enclosure comprising a transparent or translucent...
|
|
|
4672366 |
Subterranean tank leak containment and detection system
An improved system for containment and detection of leakage of petroleum products from a subterranean storage tank is disclosed wherein the tank is provided with leak sensing means positioned at...
|
|
|
4663614 |
Hydrocarbon detector system
A probe comprising an electrically conductive polymer and a pair of electrodes is placed to be contacted by the chemical. Contact changes the molecular structure or arrangement and changes the...
|
|
|
4660026 |
Fluid state detector
Two thermistors are mounted in a fluid detection probe, one thermistor having its surface exposed to the ambient fluids, and the other encapsulated in an insulator, such as RTV, that has a thermal...
|
|
|
4644354 |
Fluid detector
A system for detecting fluid pollutants includes probes for sensing the presence of a polar liquid, a non-polar liquid, and a dry condition, and for producing a polar liquid signal, a non-polar...
|
|
|
4640121 |
Method for finding a leak in pressure-carrying vessels and apparatus for carrying out the method
A method for determining the location of a leak in pressure-carrying vessels, including a plurality of probes spaced-apart on walls of the vessels for picking up high-frequency solid-conducted...
|
|
|
4635042 |
Vacuum leak detector
A method and apparatus for detecting leaks within a vacuum system by narrow band detecting and amplifying a particular ultrasonic frequency peculiar to such leaks is disclosed. The device is formed...
|
|
|
4618855 |
Soil pollution monitoring system
A soil pollution monitoring system includes a plurality of ducts for conveying gases and air past a sensing device. The sensing device detects selected compounds in the gases and air and provides...
|
|
|
4602250 |
Tank leakage detection system
This tank leakage detection system senses at an early stage the failure of a liner membrane made of a non-corroding material such as lead which allows the escape of a corrosive liquid contained...
|
|
|
4602249 |
Method and apparatus for detecting leaking valves in a volumetric infusion device
A method and apparatus for detecting leaking valves in a volumetric fluid delivery system. The system employs a volumetric chamber divided into two compartments by a moveable membrane, with each...
|
|
|
4598273 |
Leak detection system for roofs
A moisture intrusion detection system is provided, wherein a plurality of independent and insular moisture detecting units are placed in a predetermined spaced apart relationship across the surface...
|
|
|
4598277 |
Water detection subassemblies and method of forming same, for use in computer processing centers
The present invention relates to a water detection subassembly and method for forming same, for use in association with water detection system operating within a digital computing center. The...
|
|
|
4591838 |
Spillage detector for liquid chromatography systems
A spillage detector device for use in conjunction with fractionation of liquid chromatography systems which includes a spillage receiving enclosure (34) beneath the fractionation area. A sensing...
|
|
|
4591837 |
Hydraulic fluid leak warning apparatus
Apparatus for warning of a leak in a hydraulic system. The warning apparatus includes a liquid level sensor, mounted above the hydraulic fluid reservoir, and a signal assembly. The sensor includes...
|
|
|
4590462 |
Oil leakage detection apparatus
A chemically activated rotary actuator mechanism is described which reacts to exposure to hydrocarbons such as gasoline and oil to cause a rotor to forcibly rotate from a rest or static position....
|
|
|
4587619 |
Method and apparatus for electronic leak testing
The specification discloses an electronic dynamic balance leak testing system utilizing a "live zero", wherein a source of test medium at a predetermined desired pressure or vacuum is connected to...
|
|
|
4575807 |
Method and apparatus for leak test
To measure the leak rate in a transmission partially filled with a transmission fluid but having an air space of unknown volume, air is supplied to the transmission to pressurize the cavity to a...
|
|
|
4569634 |
Failure sensing diaphragm for a diaphragm pump
In accordance with the present invention, the imminent failure of a diaphragm due to the attack by a corrosive or a solvent or mechanical fatigue is predicted through the use of a diaphragm pump...
|
|
|
4568925 |
Subterranean tank leak detection system and method
An improved system for containment and detection of leakage of petroleum products from subterranean tanks or lines is disclosed wherein the tanks or lines are provided with a leak sensing means...
|
|
|
4565965 |
Method and apparatus for locating roof leaks in flat roofs
There is provided a method and apparatus for locating leaks in flat roofs, particularly in flat roofs covered with a gravel layer, plants or the like, and wherein it is provided that a moisture...
|
|
|
4563674 |
Oil leak detector
An improved floating sensor for the detection of oil leaks at a water surface is provided wherein a cloth layer is affixed to the outside of a leak detector which, by capillary action, results in a...
|
|
|
4561292 |
Double-wall underground container for storing liquids and leak detecting means therefor
An aboveground reservoir is connected to the space between inner and outer tanks of an underground double-wall storage container for liquids. Leak detecting liquid fills the space between the tanks...
|
|
|
4553139 |
Vacuum monitor for vacuum interrupter
A vacuum monitor for a vacuum interrupter which can detect poor vacuum pressure at high detection sensitivity from the outside of the interrupter, on the basis of the impulsive electromagnetic wave...
|
|
|
4549171 |
Floating oil leak detector
Oil floating on the surface of a body of water can be detected by the floating sensor of this invention which comprises a float having a central opening vertically therethrough and containing an...
|
|
|
4547768 |
Toilet reservoir fill alarm
A toilet reservoir fill alarm including water level sensors which can be positioned in the water reservoir tank of a flush toilet to detect the presence or absence of water at a desired level. A...
|
|
|
4547769 |
Vacuum monitor device and method for vacuum interrupter
An abnormally high vacuum pressure of a vacuum interrupter is detected from outside of the interrupter in response to electromagnetic wave signals generated by an electric discharge derived in...
|