Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific circuit breaker or control structure
Reexamination Certificate
2006-11-21
2006-11-21
Jackson, Stephen W. (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific circuit breaker or control structure
Reexamination Certificate
active
07139159
ABSTRACT:
The invention relates to a sensor device, particularly a limit or threshold value sensor device with a sensor system for detecting an external measured quantity, a switching device being provided for switching a load circuit.The known design of the switching device by means of transistors or electromechanical relays has always necessitated compromises with regards to the electronic functionality, design of the circuit and arrangement on or with the sensor device.The solution provided by the invention is a switching device with an almost wattless drive and galvanic separation or isolation between the control circuit and output circuit, the sensor system being constructed independent of the load circuit.
REFERENCES:
patent: 3899698 (1975-08-01), Kleinschmidt
patent: 4392074 (1983-07-01), Kleinschmidt et al.
patent: 4100634 (1992-07-01), None
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patent: 0372442 (1990-06-01), None
patent: 0512161 (1992-11-01), None
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patent: WO 9306572 (1993-04-01), None
Fey Wilhelm
Krause Ernst
Jackson Stephen W.
Jacobson & Holman PLLC
Pepper1 + Fuchs GmbH
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