Gerhard Wilhelm
Gerhard Wilhelm Walter, Kerpen-Neubottenbroich DE
Patent application number | Description | Published |
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20100187415 | TURBOMOLECULAR PUMP - A turbomolecular pump ( | 07-29-2010 |
20140369809 | TURBOMOLECULAR PUMP - A turbomolecular pump has a rotor element in a housing. The rotor element is arranged on a rotor shaft. The rotor shaft is supported by two bearing elements in the housing. The bearing element on the high-vacuum side is constructed as a roller bearing. In order to guarantee a pressure in the area of the bearing element that is acceptable for the bearing element constructed as a roller bearing, the bearing element is arranged in a chamber. The chamber is connected via a channel to the pre-vacuum area and sealed relative to the high-vacuum area by a gasket. | 12-18-2014 |
Gerhard Wilhelm Walter, Kerpen DE
Patent application number | Description | Published |
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20110197659 | METHOD FOR DETERMINING AN OVERALL LEAKAGE RATE OF A VACUUM SYSTEM AND VACUUM SYSTEM - An overall leakage rate of a vacuum system which can be operated continuously or cyclically is determined. The vacuum system includes at least one process chamber ( | 08-18-2011 |
20110286833 | VACUUM PUMP - A vacuum pump has the outer side of the pump housing provided with retaining elements. These serve to receive at least one mass element. With these mass elements, which are preferably arranged asymmetrically with respect to the longitudinal axis of the vacuum pump, vibrations that occur can be suppressed. | 11-24-2011 |
Gerhard Wilhelm Walter, Koeln DE
Patent application number | Description | Published |
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20140123732 | LEAK DETECTION DEVICE AND METHOD FOR CHECKING OBJECTS FOR FLUID TIGHTNESS BY MEANS OF A LEAK DETECTION DEVICE - A leak detection device has a test chamber which, for evacuation, is connected to an evacuation pump device. Moreover, the test chamber is connected by a test gas line to a test gas pump device. The test gas pump device is connected, at its main inlet, to a test gas detector, such that a detection of test gas can take place using the counter-current principle. A valve device is arranged in the test gas line. This valve device has a test gas chamber for temporary storage of test gas removed from the test chamber. | 05-08-2014 |