| INFICON GMBH Patent applications |
| Patent application number | Title | Published |
|---|
| 20120261569 | METHOD AND DEVICE FOR DETERMINING LEAKAGE - In order to determine leakage on a device, which contains gas that can be condensed, an adsorbent is used through which ambient gas of the object is conducted. The adsorbed gas is desorbed by means of actuating an excitation device and fed to a gas sensor containing a mass spectrometer. In this way, minute amounts of leaking gas can be determined by means of accumulation. The method is in particular suited for use in the serial production of refrigeration machines. | 10-18-2012 |
| 20120118048 | SNIFFING LEAK DETECTOR - The invention relates to a sniffing leak detector comprising a sniffing line ( | 05-17-2012 |
| 20120100018 | MAINTENANCE MACHINE FOR REFRIGERATION UNITS - For refrigeration units, maintenance machines are required that can receive and compress the refrigerant from the refrigeration unit. Furthermore, a vacuum pump is required, which is connected to the emptied lines and pumps out humidity and air. The maintenance machine according to the invention includes a motor that drives a compressor via a freewheel in one rotational direction. The same motor drives a vacuum pump via a second freewheel in the other rotational direction. The maintenance machine, which can perform two different functions, includes only one single motor. The machine is lightweight, so that it can be carried by the maintenance personnel. Furthermore, it is small and can be produced in a cost-effective manner. | 04-26-2012 |
| 20120090380 | HYDROGEN SENSOR - A hydrogen sensor includes a housing, which is closed off by a membrane that is made of palladium and selectively only pervious to hydrogen. The housing is evacuated and contains a Pirani pressure sensor. The membrane and the Pirani pressure sensor are each attached to a carrier. Both carriers are joined directly next to one another or kept at a distance by a connection piece. The hydrogen sensor has a high sensitivity and a low response time due to the relatively large membrane surface and the low housing volume. It can be produced in a small size and integrated in the handle of a sniffer-type leak indicator. | 04-19-2012 |
| 20120031162 | METHOD FOR FUNCTIONALLY TESTING A LEAK DETECTOR - In order to functionally test a leak detector ( | 02-09-2012 |
| 20110291005 | MASS SPECTROMETER - A cathode configuration for emission of electrons has a reaction zone connected to an entrance opening for the supply of neutral particles. The opening communicates with the cathode configuration for the ionization of the neutral particles and an ion extraction system communicates with the reaction zone. Ions from the extraction system are sent to a detection system and a mechanism for the evacuation of the mass spectrometer arrangement. The cathode configuration includes a field emission cathode with an emitter surface, wherein at a short distance from this emitter surface, an extraction grid is disposed for the extraction of electrons, which grid substantially covers the emitter surface. The emitter surface encompasses herein at least partially a hollow volume such that a tubular structure is formed. | 12-01-2011 |
| 20110283769 | LEAK DETECTION METHOD - In the leak detection method, it is provided that a specimen ( | 11-24-2011 |
| 20110262823 | METHOD FOR CHECKING THE SEAL OF A STACK OF FUEL CELLS | 10-27-2011 |
| 20110018545 | HELIUM SENSOR - The helium sensor comprises a housing that encloses a detection chamber. A side of the housing is closed by a permeable wall that is selective for helium. In the detection chamber, there is located an ion getter pump comprising an anode, a cathode and a magnetic field. The cathode, or a cathode leg is made of beryllium. Beryllium has a low atomic mass, whereby the likewise light-weight helium ions can be better incorporated into the cathode material. | 01-27-2011 |
| 20100294026 | SNIFFING LEAK DETECTOR - A sniffing leak detector which comprises a first suction line in a sniffing probe, the line leading to a main device, is provided with a larger second suction line through which gas is sucked in from the sniffing tip by a gas delivery pump. By connecting the second suction line, the distance sensitivity is increased. By disconnecting the second suction line, on the other hand, the sensitivity is increased. Thus, it is possible to first search for leaks by use of a high gas throughput and subsequently exactly determine the leaks under the quantitative aspect by use of a reduced flow. | 11-25-2010 |
| 20090288477 | Leakage Search Assembly Having a Sniffing Probe - The leakage search assembly has a main device which contains a vacuum pump and a test gas sensor, and a hand-held sniffing probe. Capillary lines which connect the sniffing probe to the basic assembly contain valves by means of which these lines can be selectively opened. In a leakage search mode, the capillary line having the larger cross section is open. This results in leaks also being found from a greater distance. The dead time before response of the test gas sensor is shortened. Once a leak has been located, the assembly is switched to the leakage rate measurement mode, in which only the capillary line with the smaller cross section is open. This results in quantitative determination of the leakage rate with high accuracy and high stability. | 11-26-2009 |
| 20090212960 | Sniffing Leak Detector - The sniffing leak detector comprises a sniffing probe, a suction device and gas detector. An operator-activated switch initiates the beginning of a measuring operation. The switch starts a time measurement, wherein an alarm signal is generated by a signal transmitter at the end of a predetermined measuring period. The sniffing leak detector allows for an operator guidance from measuring point (MP) to measuring point, wherein the measuring period is predetermined and an adherence to the measuring period is monitored. | 08-27-2009 |
| 20090100909 | Leak testing method and leak testing device - A leak testing device includes a chamber which is hermetically sealed towards the environment, having a test object filled with a test gas that is positioned in the chamber. In the chamber, a partial-pressure sensor is arranged that selectively responds to the test gas, but not to the filler gas. Thus, a leak test can be simply performed without high vacuum and without mass spectrometers. | 04-23-2009 |
| 20090013766 | Method and device for detecting leaks - In leak detection, the signal generated by a test gas is superposed by interferences which fade as the vacuum generation in a container proceeds. Depending on the negative slope of the volume signal (MS), a lower indication limit (AG) is calculated. Upon activation of a zero function, the volume signal (MS) is not reduced to zero but only to the level of the indication limit (AG). Any exceeding of the indication limit is identified as a leak. Thus, the maximum sensitivity of the leak detection is guaranteed at any time. | 01-15-2009 |
| 20080276692 | Leak Indicator Comprising a Sniffer Probe - The leak detector comprises a basic device ( | 11-13-2008 |
| 20080223112 | Sniffing Probe - Sniffing probes are frequently used for detecting leaking gases in difficult-to-access and poorly visible environments, for example for detecting a gas leakage in a cooling device of a motor vehicle. It is an object of the invention to improve handling of the sniffing probe. According to the invention, the object is achieved by providing an illumination device ( | 09-18-2008 |
| 20080202211 | Gas Sensor and Method For Operating a Getter Pump - The invention relates to a gas sensor comprising a pump chamber ( | 08-28-2008 |
