Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Reexamination Certificate
2007-10-16
2007-10-16
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
C073S577000, C073S579000, C073S582000, C073S781000, C073S786000, C073S788000, C073S789000, C073S826000
Reexamination Certificate
active
11177018
ABSTRACT:
A device for monitoring the service life of a machine-technical installation includes a sensor module and at least a measuring sensor for detecting stresses and expansions from a structural component of the machine-technical installation, a microcontroller, an antenna arrangement and a current source; the sensor module being in bi-directional connection with a data processing unit and having an antenna arrangement integrated therein, the antenna arrangement including a low-frequency antenna by means of which the sensor module is turned on and off and a high-frequency antenna for sending and receiving high frequency signals and wherein the sensor module can transition from an operating mode into a stand-by mode for energy efficiency and is reactivated through a signal from a detector element.
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Michel J: “Dehnungsmessung mit funkabfragbaren OFW-Resonatoren”, Technisches Messen TM, R. Oldenbourg Verlag, Munich, DE, vol. 62, No. 9, Sep. 1, 1995, pp. 342-345, XP000527993, ISSN: 0171-8096.
Day Ursula B.
Feiereisen Henry M.
Kirkland, III Freddie
Lefkowitz Edward
Thiele GmbH & Co. KG
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