| Patents for G01M 3 - Investigating fluid tightness of structures (22,573) |
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| 10/01/1991 | US5052215 Leak detection in storage tank bottoms by pneumatic enhancement of acoustic emissions |
| 10/01/1991 | US5052212 Dynamic leak detector |
| 10/01/1991 | CA1290059C Steam trap operation judging device |
| 09/26/1991 | DE4107093A1 Crack testing of shaped parts in press - involves forming chamber between part and tool and monitoring pressure in chamber |
| 09/26/1991 | DE4015321A1 Testing correct seating of e.g. vehicle disc brake seal - using under-pressure measurement device with test head in contact with seal, vacuum pump and meter |
| 09/25/1991 | EP0229762B1 Method and apparatus for detecting leaks and other defects on sewers and the like channels |
| 09/24/1991 | US5050426 Method for determining the reliability of men's contraceptives |
| 09/21/1991 | CA2038641A1 Process and an apparatus for leak testing a package |
| 09/19/1991 | DE4008687A1 Testing safety reservoir esp. reserve tank of motor vehicle - registering difference in dynamic pressure between test air stream in inner container and stream emerging from outer container |
| 09/18/1991 | EP0446729A2 Seal withdrawal and testing device |
| 09/18/1991 | EP0446545A1 Sealing plug for high pressure testing of small diameter pipes |
| 09/17/1991 | US5049168 Helium leak detection method and system |
| 09/17/1991 | US5048324 Aboveground tank leak detection system and method |
| 09/17/1991 | CA1288972C Seal testing of containers |
| 09/15/1991 | WO1991014164A1 Method and apparatus for leak testing |
| 09/15/1991 | CA2053232A1 Method and apparatus for leak testing |
| 09/12/1991 | DE4007276A1 Testing appts. for gas service box in building - has shut=off valve in connecting union and manometer on handpiece |
| 09/11/1991 | EP0446182A1 Method and equipment for testing the seals in the supply-exhaust system of an internal combustion engine with fuel injection for motor vehicles |
| 09/11/1991 | EP0318493B1 A test device for a porous loads sterilizer |
| 09/10/1991 | US5046519 Method and apparatus for monitoring a fluid conduit system |
| 09/10/1991 | US5046354 Pressurized storage tank with automatic shut-down in case of leakage |
| 09/10/1991 | US5046353 Underground pipe leak detection system |
| 09/09/1991 | WO1991014127A1 Apparatus for inspecting the interior of a lateral pipeline |
| 09/09/1991 | CA2075709A1 Apparatus for inspecting the interior of a lateral pipeline |
| 09/05/1991 | DE4006567A1 Continuous measuring appts. for liq. level in container - measures pressure differential between electrically non-conductive liq. and gas space above |
| 09/04/1991 | EP0445002A2 Leak detection device for in-line measurement of package integrity |
| 09/04/1991 | EP0444434A2 Portable counter-flow helium leak detector for testing a vessel provided with its own pumping group |
| 09/04/1991 | EP0444200A1 Piping abnormality monitoring apparatus |
| 09/02/1991 | CA2037185A1 Leak detection device for in-line measurement of package integrity |
| 08/28/1991 | EP0294455B1 A method of increasing the sensitivity of a leak detector in the probe mode |
| 08/27/1991 | US5042291 Method for reducing test cycle time and for improving measuring accuracy at a leak testing process |
| 08/27/1991 | US5042290 Isolator for leak detector tester |
| 08/22/1991 | WO1991012626A1 Chemical sensors based on polymer swelling |
| 08/22/1991 | WO1991012508A1 Method for testing hermeticity of sealed envelopes of articles |
| 08/22/1991 | DE4104420A1 Monitoring system for ignitable gases, oil refinery - has pipe branches with collection system feeding detectors of gases, vapours etc. |
| 08/22/1991 | DE4004965A1 Testing of containers, esp. of foodstuffs, for closure sealing - applying and removing strong magnetic field, evacuating closure vibrations to determine underpressure in container |
| 08/21/1991 | EP0442595A2 Method for storage tank leak detection having ground water compensation |
| 08/21/1991 | EP0442594A2 Test probe for use in a storage tank leak detection system |
| 08/21/1991 | EP0441838A1 A device for the detection of abnormal condition of a portion of an object which is movable relative to the device. |
| 08/20/1991 | US5040579 Device for detecting leak in metering cylinder of liquid filling machine |
| 08/20/1991 | US5040409 Sprinkler alarm |
| 08/20/1991 | US5040408 Sump-riser |
| 08/17/1991 | CA2036255A1 Test probe for use in a storage tank leak detection system |
| 08/17/1991 | CA2036254A1 Method for storage tank leak detection having ground water compensation |
| 08/14/1991 | EP0441632A2 Apparatus for detecting micro-leakage of gas from pressurised containers |
| 08/14/1991 | EP0440828A1 Gas monitoring system with leak detection and flow cutoff |
| 08/14/1991 | DE4003788A1 Two wire line monitoring system - using measured loop and insulation resistances for pipe network leakage detection |
| 08/13/1991 | US5039367 Method of forming storage tank system having secondary containment capability |
| 08/13/1991 | US5038820 Automatic fluid shutoff system |
| 08/13/1991 | US5038614 Acoustic vibration detection of fluid leakage from conduits |
| 08/13/1991 | CA1287503C Device and method for testing bottle-shaped containers |
| 08/08/1991 | DE4003434A1 Single-wall container with protective rubber cladding - has second film forming gap for leak indicator connection, detecting leakage of e.g. corrosive media |
| 08/07/1991 | CN1053660A Diagnostic system for evaluating performance of critical valves in steam turbine system |
| 07/31/1991 | CN1013409B Leak detection and screening test for packaged details |
| 07/30/1991 | US5036309 Portable system and method for continuously monitoring protective clothing for detecting and signaling the occurrence of a breach therein |
| 07/30/1991 | US5035141 Apparatus for measuring small changes in liquid level in a container |
| 07/30/1991 | CA1287116C Device for detecting increased pressure in pleural cavity |
| 07/26/1991 | CA2034844A1 Diagnostic system for evaluating the performance of critical valves in a steam turbine system |
| 07/25/1991 | WO1991010889A1 Sealing film with an electric measuring instrument for detecting leaks in the film |
| 07/25/1991 | WO1991010883A1 Method and apparatus for detecting liquid leaks |
| 07/24/1991 | EP0437671A1 Leak testing installation using two concentric Holweck-pumps |
| 07/23/1991 | US5033287 Method for inspecting a sealing property of a plastic container |
| 07/23/1991 | US5033190 Method for controlling a tube expander |
| 07/23/1991 | CA1286523C Apparatus and method for determining rate of leakage of liquid from and into tanks |
| 07/18/1991 | DE4000681A1 Testing jointing seams of sealing tapes e.g. for roofing - by filling space between parallel seams with pressure medium detectable by naked eye and/or sensor |
| 07/18/1991 | DE4000669A1 Testing pressure containers, esp. aircraft wheels - by placing wheel in test container and measuring variation of pressure and temp. with time |
| 07/17/1991 | EP0436676A1 Container and container seal integrity testing method |
| 07/17/1991 | CA2034143A1 Intermediate tap holweck pump leak detection apparatus |
| 07/16/1991 | US5032414 Process for stacking individual one piece receptacles |
| 07/16/1991 | US5032413 Process for testing individual one piece receptacles |
| 07/16/1991 | US5031447 Standpipe leveler for hydrostatic pressure tank tester |
| 07/16/1991 | US5031446 Water leakage position estimating system |
| 07/16/1991 | CA1286125C Process and device for the control of tightness of packages |
| 07/10/1991 | EP0436321A2 Mounting assembly |
| 07/09/1991 | US5029464 Method and apparatus for leak testing a hollow body |
| 07/09/1991 | US5029463 Leak detection device for in-line measurement of package integrity |
| 07/02/1991 | US5028380 Spectrum analysis of radioactive solution containing metallic isotopes |
| 07/02/1991 | US5027644 Method and apparatus for injecting acoustic signals into live gas mains |
| 06/26/1991 | EP0433519A1 Test stand |
| 06/26/1991 | CN1052549A Inspection machine for plastic bottles |
| 06/25/1991 | US5026141 Structural monitoring system using fiber optics |
| 06/25/1991 | US5025670 Means for introducing inspection equipment in active pipelines |
| 06/25/1991 | US5025657 Process and device for testing the tightness of a flexible plastic container |
| 06/19/1991 | EP0432550A2 Device for testing containers for leaks |
| 06/19/1991 | EP0432305A1 Method and apparatus for leak detection |
| 06/18/1991 | US5024079 Test plug for flanged pipes |
| 06/18/1991 | CA1284875C Method for detecting dripping droplet |
| 06/18/1991 | CA1284853C Test valve |
| 06/16/1991 | CA2031075A1 A device and a method for detecting leaks |
| 06/13/1991 | WO1991008525A1 Metallic container equipped with hologram or diffraction grating |
| 06/13/1991 | WO1991008458A1 Improvements in or relating to joint testing apparatus |
| 06/12/1991 | EP0432143A2 Method and use of a device for testing the state of the volume of at least one hollow body |
| 06/12/1991 | EP0432140A2 Shaft assembly |
| 06/12/1991 | EP0431233A1 Partial pressure gauge using a cold-cathode ion source for leak detection in vacuum systems |
| 06/12/1991 | CN1012847B Sonic apparatus and method for detecting presence of gaseous substance in closed space |
| 06/11/1991 | US5022265 Method and apparatus for leak testing fluid conducting freeze-drying apparatus |
| 06/09/1991 | WO1991009413A1 Partial pressure measuring cell with cold-cathode ion source for leak detection in vacuum systems |
| 06/09/1991 | CA2045632A1 Partial pressure measuring cell with cold-cathode ion source for leak detection in vacuum systems |
| 06/05/1991 | EP0429526A1 Method and apparatus for testing the permeability of plates. |
| 06/05/1991 | CN2078388U Device for valve pressure testing |