Matches 401 - 450 out of 619 < 1 2 3 4 5 6 7 8 9 10 11 12 13 >
Match Document Document Title
4487058 Method and apparatus for detecting gas leaks  
Test gas passing through leaks is conducted through a conduit to the discharge end of a counterflow pump or turbo-molecular pump. The leak gases advance opposite to the pumping direction of the...
4477986 Method of, and apparatus for, detecting leaks  
A method of, and apparatus for, detecting leaks from a surface provides a sampling device (10) making use of an air curtain (C). The body (11) of the device (10), the curtain (C) and a surface (B)...
4478096 Shielded sniffing device  
A device for detecting contraband in closed luggage is provided. The device is especially useful for detecting fruits, vegetables, foodstuffs and other materials that give off carbon dioxide.
4472962 Low pressure leak detector  
A leak detector for detecting the presence of a leak in a vacuum vessel exposed on its exterior to a test gas, comprising, a turbo vacuum pump having an inlet connected to a gas sensor for sensing...
4459844 Gas separation chamber and portable leak detection system  
A portable leak detector is disclosed for use with, say, helium as a tracer gas. The leak detector includes an improved separation chamber, an air pump for pumping the sample gas, a high vacuum...
4450711 Method of and device for remotely detecting leaks in a fluid-conveying pipe-line submerged within an ambient fluid and pipe-line provided with such a detection device  
A pipe-line for conveying a fluid submerged in an ambient fluid medium has an inner conveying tube surrounded by an outer tube radially spaced from the inner tube and defining a continuous annular...
4445364 Method and apparatus for measuring air infiltration rate into buildings  
Sources which emit tracer gas at a known constant rate are positioned throughout a building. Samples of air are collected in selected rooms with constant rate adsorbent samplers. Samplers are...
4436998 Helium leakage detector  
The invention relates to a helium leakage detector. It includes a measuring spectrometric cell (8) disposed in parallel with a molecular diffusion pump (6) whose outlet (7) is short-circuited at...
4429566 Piping leakage detection method and apparatus  
A method of testing for leaks in tubing and tube joints comprises placing within the tube to be tested a tool having spaced seals so that the seals are arranged on opposite sides of the joint to be...
4419882 Leakage detection method using helium  
A means for detecting helium which has flowed into a system by substitution for air at a leaking location and mixed with the remaining gases, and after the helium gas permeates a helium permeable...
4413503 Method of detecting leaks in a large storage tank  
A method of testing bottoms of large storage tanks. It involves sealing the outer edges of the bottom plate against gas leakage, followed by feeding a halogen gas to the under side of the bottom...
4409817 Vacuum leak detector and method  
Apparatus and method for detecting leakage in a vacuum system involves a moisture trap chamber connected to the vacuum system and to a pressure gauge. Moisture in the trap chamber is captured by...
4408480 Gas leak detector viewer  
A viewer for improving the visibility of Halide gas leak detectors, and comprising an observation tunnel embracing the flame shield of the detector at one closed end, open at the other end for...
4404843 Cryogenic storage tank leak detection system  
The invention provides a system for the detection of leaks in the primary barrier (150), the secondary barrier (130), and the inner hull (110) of the primary and secondary insulation spaces (140...
4402214 Filter element test method and apparatus  
A filter testing device is disclosed wherein the ends of a filter element is clamped between resilient seals in a filter holder member. A dioctyl phthalate smoke generator generates smoke which is...
4399690 Vacuum leak detector having single valve assembly  
Equipment is monitored for leaks by a mass spectrometer responsive to a low molecular weight test gas. A diffusion pump has a foreline and an inlet connected in fluid flow relation with the...
4398413 Leak detection for hermetic enclosures  
A method of leak testing hermetic enclosures having a penetrable, self-sealing septum communicating with the interior thereof. Test gas is introduced into the enclosure by means of a hypodermic...
4381664 Methods of and apparatus for the detection of airborne particles  
A method of measuring the containment efficiency of a biological safety cabinet comprises releasing an aerosol of identifiable droplets within the cabinet and then sampling ambient air in the...
4373379 Method and apparatus for detecting defects in a water cooling system of a hydrogen-cooled dynamic electric machine  
Presented are a method and apparatus for detecting defect in the water cooling system, e.g. cracking, of a hydrogen-cooled dynamic electric machine. The stator core of the hydrogen-cooled dynamic...
4361035 Nonstaining leak tracer solution and method employing same  
Combination of a nonionic oxyalkylated alcohol surfactant and an engine fuel, e.g. a 50--50 mixture, by volume, of such surfactant and an aircraft engine fuel such as JP-4 jet fuel, consisting...
4356721 Glass lead seal test apparatus  
Glass lead seal test apparatus in which a multiplicity of microcircuit pages with the leads sealed relative thereto by glass are checked for leakage between the glass seals and the microcircuit...
4344320 Crack indicator for monitoring the insulation of liquefied gas tanks  
A crack indicator based on a piping system consisting of cold-embrittling plastics pipes imbedded in a gas container insulation. A warning gas is subjected to an excess pressure in the piping...
4330428 Smoke generator  
A smoke generator is adapted to be used with other apparatus for testing the peripheral seal integrity of a package. The smoke generator heats a fuel within a chamber and then aspirates smoke into...
4328700 Leak detection method and apparatus  
A method and apparatus are disclosed for detecting leaks in fluid processing systems using sulfur hexafluoride as a tracer. Leak detection can be carried out with the processing system continuing...
4320654 System for detecting cracks in the heat-insulating lining of a container for liquefied gas  
A problem with tanks for storing liquefied gases is the development of cracks in the heat-insulating lining of the tank. Methods have been proposed for the detection of cracks occurring in the...
4317996 Methods for detection of roof leaks and areas or zones of the leakage  
Methods for detection of the presence or absence of water leaks in building roofs and for tracing any leaks to the zone or area thereof in the roof by applying on all or part of the roof...
4294106 Leak detector  
A leak detector comprises helium measuring means (6) for measuring helium sucked in by a sniffer (2) via a flexible hose (3) and a liquid nitrogen trap (5). A vacuum is maintained in the nitrogen...
4283937 Method of detecting broken window foil of apparatus for treating waste gas with irradiation  
A method of detecting a broken foil that closes the opening of the window of the reaction vessel of an apparatus for treating waste gas with irradiation is disclosed. The detection is accomplished...
4282743 Leak test fitting  
A hollow fitting for use in gas spectrometry leak testing of conduit joints is divided into two generally symmetrical halves along the axis of the conduit. A clip may quickly and easily fasten and...
4282744 Leak testing hermetically sealed electronic articles  
Hermetically sealed electronic articles (11) such as, for example, diodes are leak tested by exposing the articles to a fluid (28) under pressure. The fluid is capable of altering the electrical...
4259080 Method of determining discontinuities in the heat exchanger of a warm air furnace  
Method of determining discontinuites in the heat exchanger of a warm air furnace directed to spraying the burner within the furnace with a non-corrosive solution of sodium carbonate. The solution...
4253328 Device for enclosing a person's head to test a breathing mask  
A device for enclosing a person's head which is fitted with a breathing mask for the purpose of testing the sealing of the mask to the wearer's face comprises a substantially cylindrical rigid...
4250740 Method for evaluating effectiveness of track link seals  
The pivot or hinge joints of a track chain assembly of a track laying tractor each include lubricant cavities which are sealed by a pair of spaced apart seals. The seals each include a resilient...
4249412 Fluorescent leak detection composition  
A fluorescent leak detection composition is provided comprising water, a nonionic surfactant having an HLB value of about 12 to about 14 in an amount effective to produce stable bubbling of the...
4243547 Composition and method for removing water and aqueous leak tracer solutions from fuel tanks  
Combination of a nonionic oxyalkylated alcohol surfactant and an engine fuel, e.g. a 50--50 mixture, by volume, of such surfactant and an aircraft engine fuel such as JP-4 jet fuel, consisting...
4238953 Emission test method for floating roof seals and apparatus useful therefor  
A method of and apparatus for testing the effectiveness against leakage of a seal in a gap between two surfaces which comprises positioning and securing an envelope to span the seal and gap and...
4232546 Method and apparatus for tube leakage testing  
A method and device for testing tube leakage, more particularly in a moisture-separator reheat superheater, to determine a tightness of separating walls between two flowing media which are...
4226113 Leak detecting arrangement especially suitable for a steam condenser and method  
The detection of leaks in tubes, particularly cooling tubes in a steam condenser, is disclosed herein. In accomplishing this, a discrete amount of helium or similar tracer gas is initially directed...
4224800 Process for safe underground storage of materials and apparatus for storage of such materials  
A method for the formation of a safe storage area to hold materials, where the storage area is in the form of an underground storage cavern in a preferably rock formation maintained at a different...
4216821 Pump/heat exchanger  
A pump/heat exchanger assembly has tubes with double walls, inner and outer respectively, the outer wall being provided with inner longitudinal grooves. The exchange occurs between a primary fluid...
4202202 Method and apparatus for detecting deflect in liquid metal handling instruments  
Method and apparatus for detecting the position of defects in a liquid metal handling instruments such as sodium-heated steam generator, which has a conduit structure invisible from the outside of...
4198856 Smoke bomb isolation and containment device  
Apparatus for forcing smoke produced by a smoke bomb into a cavity to test for leaks therein. The apparatus includes a housing for receipt of an ignitable smoke bomb to produce smoke therein, a...
4195224 Gas leakage detection apparatus  
A gas leakage detection apparatus is described comprising a mass spectrometer with which there is associated a first pumping device for creating a relative vacuum in the apparatus, a selective...
4189938 Double tracer gas process for locating conduit leaks  
A process for locating leaks in an underground protective conduit disposed about a carrier pipe, and comprising the insertion of a double tracer gas into the protective conduit for the purpose of...
4188818 Mechanism for leak testing of hermetically sealed vessels  
A self-contained device for selectively discharging a pressurized gas within a hermetically sealed vessel to which it has been sealed, to enable a leak testing of the vessel. A linear actuator is...
4188817 Method for detecting membrane leakage  
Method for detecting leakage of semipermeable membranes or hollow fibers, said membranes or fibers exhibiting salt rejection, which comprises contacting one side of the membrane or fiber with an...
4187856 High-speed transmission of blood stream gases  
The various gases in the blood stream are analyzed by a mass spectrometer coupled to the catheter having on its distal end a membrane that passes the gases but not the blood. A "carrier" gas, such...
4187798 Method of detecting defective portion of sealing  
A method of detecting the defective portion of sealing comprising injecting into a moisture-tight container or package having a sealed portion a detection liquor consisting essentially of a colored...
4184362 Bottle leak tester  
An apparatus and method for detecting leaks at a fast rate in plastic bottles or similar containers wherein the bottles are secured in a multiplicity of open pocket members and arranged in a...
4174735 Method of temporarily sealing open ends of fluid conduits terminating in a header space  
A method of temporarily sealing off the open ends of a plurality of fluid transport conduits that terminate in a common header space. A sealant material in the liquid state, preferably enclosed in...
Matches 401 - 450 out of 619 < 1 2 3 4 5 6 7 8 9 10 11 12 13 >