Buetikofer
Janik Buetikofer, Berne CH
Patent application number | Description | Published |
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20120288107 | TEST SYSTEM FOR EVALUATING FEEDBACK PERFORMANCE OF A LISTENING DEVICE - A test system for evaluates acoustic feedback characteristics of a listening device by changing the transfer function of the signal path from an acoustic output to an acoustic input of the listening device. A variable filter comprises an acoustic input, an acoustic output, and a control unit for changing a transfer function of the filter. First and/or second acoustic propagation elements propagate acoustic sound, the first acoustic propagation element acoustically connecting the acoustic output of the listening device with the acoustic input of the variable filter, the second acoustic propagation element acoustically connecting the acoustic output of the variable filter with the acoustic input of the listening device; wherein the system is configured to allow a determination of acoustic feedback or a level of acoustic feedback of the listening device at different frequencies. | 11-15-2012 |
Markus Buetikofer, Wattenwil CH
Patent application number | Description | Published |
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20130281931 | INFUSION SET - A device for inserting a cannula into tissue, including a cannula, a protective element which can accommodate said cannula, an operating element for moving the cannula out of the protective element, and a holder fixedly connected to the cannula. The invention encompasses a system for connecting a liquid supply to the cannula. | 10-24-2013 |
Roland Buetikofer, Endingen CH
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20150258629 | PROCESS FOR WELDING PIPE CONNECTIONS FOR HIGH TEMPERATURE APPLICATIONS - A process for welding pipe connections for high temperature applications, particularly in power plants, including a first pipe section and a second pipe section. The first pipe section is made of a ferritic material having a first coefficient of thermal expansion. The second pipe section is made of an austenitic material having a second coefficient of thermal expansion, which is different from the first coefficient of thermal expansion. The weld joint is made of an austenitic filler material which has a third coefficient of thermal expansion which is in the range of the second coefficient of thermal expansion. The process includes axially aligning the first and second pipe sections to be connected, making an at least partially V-shaped weld joint open radially inwards, and performing an inside welding process inside the first and second pipe sections to be connected. The invention is further directed to such a pipe connection. | 09-17-2015 |