Patents by Inventor Daniel Wetzig
Daniel Wetzig has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20160209294Abstract: A method for testing the sealing tightness of a specimen, containing a gas, in a film chamber made from flexible material. The film chamber is evacuated by a vacuum pump and the gas flow flowing out of the film chamber and generated by the vacuum pump is measured during the evacuation and is examined with respect to a possible leak of the specimen.Type: ApplicationFiled: August 18, 2014Publication date: July 21, 2016Inventors: Daniel Wetzig, Silvio Decker
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Publication number: 20160202138Abstract: The invention relates to a sniffer probe for detecting gas leaks, the probe including a suction gas line which at one end has a suction gas inlet and at an opposite end has a suction gas outlet connectable to a suction device, and a measurement gas line bifurcating from the suction gas line, which measurement gas line at one end has a measurement gas inlet forming the bifurcation and at an opposite end has a measurement gas outlet connectable to a gas detector. The measurement gas inlet has a measurement gas filter arranged in such a way that the suction gas flow guided through the suction gas line to the suction gas outlet is guided along the surface of the measurement gas filter.Type: ApplicationFiled: August 18, 2014Publication date: July 14, 2016Inventor: Daniel Wetzig
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Patent number: 9360465Abstract: The invention relates to a leak detector comprising a first sensor for detecting a gas component (helium) in a gas taken in. Because the sensor is susceptible to saturation or contamination, a second sensor is provided. The sensor is a thermal conductivity sensor. The thermal conductivity sensor has a lower detection sensitivity, yet, at a high concentration of the gas component, it does not risk being contaminated. The two sensors together allow for a large detection range, from extremely sensitive measurements to instances with high concentrations of the gas components as those which can occur with gross leaks.Type: GrantFiled: September 1, 2011Date of Patent: June 7, 2016Assignee: Inficon GmbHInventors: Daniel Wetzig, Scott Dalton, Daniel Hoffmann, Walwyn Jackson, Jr.
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Publication number: 20150362467Abstract: The invention relates to a leak detector comprising a first sensor for detecting a gas component (helium) in a gas taken in. Because the sensor is susceptible to saturation or contamination, a second sensor is provided. The sensor is a thermal conductivity sensor. The thermal conductivity sensor has a lower detection sensitivity, yet, at a high concentration of the gas component, it does not risk being contaminated. The two sensors together allow for a large detection range, from extremely sensitive measurements to instances with high concentrations of the gas components as those which can occur with gross leaks.Type: ApplicationFiled: August 24, 2015Publication date: December 17, 2015Inventors: Daniel Wetzig, Scott Dalton, Daniel Hoffmann, Walwyn Jackson, JR.
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Patent number: 8915122Abstract: The invention relates to a sniffing leak detector comprising a sniffing line (11) and a feed line (33) that leads to a vacuum pump (16). A distribution point (24) from which a branch line (25) leads to a test gas sensor (15) is provided on the feed line (33). In order for the intermediate pressure (P2) at the distribution point (24) to be independent of feed fluctuations of the vacuum pump (16), a throttle (D2) comprising a supercritically operated orifice (20) is provided between the distribution point (24) and the vacuum pump (16). The pressure drop at the orifice (20) is greater than half the intermediate pressure (P2) at the distribution point (24). The flow at the orifice (20) is thus blocked, wherein the flow (Q) remains constant regardless of changes of the pump pressure (P3). Changes of the intermediate pressure (P2) are thus prevented so that the sensitivity and signal stability of the test gas sensor (15) is unaffected by changes of the pump pressure.Type: GrantFiled: February 5, 2010Date of Patent: December 23, 2014Assignee: Inficon GmbHInventor: Daniel Wetzig
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Publication number: 20140326051Abstract: The invention relates to a simplified method for detecting leaks on a non-rigid test specimen, comprising the steps of: introducing the test specimen into a film chamber, lowering the pressure in the film chamber outside of said test specimen, and detecting a leak in the test specimen on the basis of a spatial change in the film of said film chamber.Type: ApplicationFiled: December 28, 2012Publication date: November 6, 2014Inventors: Daniel Wetzig, Silvio Decker
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Publication number: 20140311222Abstract: The invention relates to a device for leak detection on a test specimen, having an evacuable test chamber for the test specimen. The test chamber is provided with at least one wall area made of a flexible, in particular elastic material. For more precise leakage detection, the progression of the total pressure increase inside the test chamber is measured.Type: ApplicationFiled: October 25, 2012Publication date: October 23, 2014Inventors: Silvio Decker, Daniel Wetzig, Hjalmar Bruhns, Stefan Mebus
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Patent number: 8756978Abstract: A leak detector comprises a cell provided with a tracer gas inlet preferably permeable to a tracer gas. In the cell, the tracer gas is caused to assume an energetically higher metastable state. By means of laser spectroscopy the absorption spectrum of the metastable tracer gas is sampled in an optical measuring section, whereby the presence of tracer gas is detected.Type: GrantFiled: April 9, 2010Date of Patent: June 24, 2014Assignee: Inficon GmbHInventors: Vladimir Schwartz, Daniel Wetzig, Boris Chernobrod
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Patent number: 8752412Abstract: 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.Type: GrantFiled: September 1, 2008Date of Patent: June 17, 2014Assignee: Inficon GmbHInventors: Daniel Wetzig, Stefan Mebus, Norbert Rolff
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Publication number: 20140096595Abstract: A method for tightness testing, wherein an evacuated test object is exposed to the external influence of a test gas and wherein a gas mixture made of a test gas withdrawn from the test object and of a carrier gas, is examined for the presence of test gas by use of a test gas sensor which, when viewed in the flow direction of the gas mixture, is arranged downstream of a condensing pump for analyzing the compressed gas mixture, wherein the test object is exposed to the ambient atmosphere without being surrounded by a test chamber, and that a test gas gun is provided for generating the atmosphere containing the test gas.Type: ApplicationFiled: October 2, 2013Publication date: April 10, 2014Applicant: Inficon GmbHInventor: Daniel Wetzig
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Patent number: 8646315Abstract: A test subject, which is filled with test gas, is placed in a testing chamber, which can be evacuated. A carrier gas is conducted into the testing chamber, so that a gas mixture made of carrier gas and test gas forms therein. The gas mixture is suctioned out of the testing chamber by a compressor pump. A testing gas sensor is connected to the outlet of the compressor pump. The test gas is contained in the compressed gas mixture at a partial pressure which is increased by the compression ratio. In this manner, the sensitivity of the test gas recognition is increased and/or the time constant of the measurement is shortened.Type: GrantFiled: November 27, 2008Date of Patent: February 11, 2014Assignee: Inficon GmbHInventor: Daniel Wetzig
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Patent number: 8633704Abstract: 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.Type: GrantFiled: February 25, 2009Date of Patent: January 21, 2014Assignee: Inficon GmbHInventors: Werner Grosse Bley, Daniel Wetzig
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Patent number: 8616046Abstract: 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.Type: GrantFiled: June 14, 2010Date of Patent: December 31, 2013Assignee: Inficon GmbHInventor: Daniel Wetzig
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Publication number: 20130213114Abstract: The invention relates to a leak detector comprising a first sensor for detecting a gas component (helium) in a gas taken in. Because the sensor is susceptible to saturation or contamination, a second sensor is provided. The sensor is a thermal conductivity sensor. The thermal conductivity sensor has a lower detection sensitivity, yet, at a high concentration of the gas component, it does not risk being contaminated. The two sensors together allow for a large detection range, from extremely sensitive measurements to instances with high concentrations of the gas components as those which can occur with gross leaks.Type: ApplicationFiled: September 1, 2011Publication date: August 22, 2013Applicant: INFICON GMBHInventors: Daniel Wetzig, Scott Dalton, Daniel Hoffmann, Walwyn Jackson, JR.
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Patent number: 8425672Abstract: A membrane selectively permeable to light gases comprises a membrane body formed by a first plate and a second plate. The second plate comprises a thin layer that is selectively gas-permeable. In the region of windows, this layer is exposed. There, support is provided by a porous bottom wall in the first plate or by narrow bores in the second plate. A heating device causes a radiation heating of the windows.Type: GrantFiled: August 10, 2012Date of Patent: April 23, 2013Assignee: Inficon GmbHInventors: Vladimir Schwartz, Daniel Wetzig, Boris Chernobrod, Werner Grosse Bley
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Patent number: 8361196Abstract: A membrane selectively permeable to light gases comprises a membrane body formed by a first plate and a second plate. The second plate comprises a thin layer that is selectively gas-permeable. In the region of windows, this layer is exposed. There, support is provided by a porous bottom wall in the first plate or by narrow bores in the second plate. A heating device causes a radiation heating of the windows.Type: GrantFiled: April 9, 2010Date of Patent: January 29, 2013Assignee: Inficon GmbHInventors: Vladimir Schwartz, Daniel Wetzig, Boris Chernobrod, Werner Grosse Bley
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Publication number: 20120304863Abstract: A membrane selectively permeable to light gases comprises a membrane body formed by a first plate and a second plate. The second plate comprises a thin layer that is selectively gas-permeable. In the region of windows, this layer is exposed. There, support is provided by a porous bottom wall in the first plate or by narrow bores in the second plate. A heating device causes a radiation heating of the windows.Type: ApplicationFiled: August 10, 2012Publication date: December 6, 2012Inventors: Vladimir Schwartz, Daniel Wetzig, Boris Chernobrod, Werner Grosse Bley
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Publication number: 20120118048Abstract: The invention relates to a sniffing leak detector comprising a sniffing line (11) and a feed line (33) that leads to a vacuum pump (16). A distribution point (24) from which a branch line (25) leads to a test gas sensor (15) is provided on the feed line (33). In order for the intermediate pressure (P2) at the distribution point (24) to be independent of feed fluctuations of the vacuum pump (16), a throttle (D2) comprising a supercritically operated orifice (20) is provided between the distribution point (24) and the vacuum pump (16). The pressure drop at the orifice (20) is greater than half the intermediate pressure (P2) at the distribution point (24). The flow at the orifice (20) is thus blocked, wherein the flow (Q) remains constant regardless of changes of the pump pressure (P3). Changes of the intermediate pressure (P2) are thus prevented so that the sensitivity and signal stability of the test gas sensor (15) is unaffected by changes of the pump pressure.Type: ApplicationFiled: February 5, 2010Publication date: May 17, 2012Applicant: INFICON GMBHInventor: Daniel Wetzig
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Patent number: 8176770Abstract: A sniffing leak detector which comprises a mass spectrometer, a turbomolecular pump and a forevacuum pump. In case that the sniffing hose with the hand-operated sniffing probe becomes detached from the main device, atmospheric pressure would pass into the gas inlet conduit and disrupt the high vacuum in the mass spectrometer. In order to protect the mass spectrometer and the vacuum pump apparatus, a flow restrictor with an upstream filter is arranged in the gas inlet conduit.Type: GrantFiled: October 26, 2007Date of Patent: May 15, 2012Assignee: Inficon GmbHInventor: Daniel Wetzig
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Patent number: 8171773Abstract: To achieve a large measurement range from small up to larger leakage rates, a switchover from normal operation to gross operation occurs. In gross operation, the sucked-in gas flow is separated by different throttles, wherein the throttle that leads to the test gas sensor has a low flow rate. This manner of operation prevents a too large quantity of test gas from reaching the sensor surface and contaminating the sensor. In another alternative, in gross operation the test gas flows only across a part of the sensor surface. The other part is flushed.Type: GrantFiled: September 10, 2007Date of Patent: May 8, 2012Assignee: Inficon GmbHInventors: Daniel Wetzig, Norbert Rolff