Device for monitoring the state of a system
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United States of America Patent
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Aug 23, 2016
Grant Date -
Nov 27, 2014
app pub date -
Feb 7, 2013
filing date -
Feb 11, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A device (1) monitors the state of a system (2), in particular safety switches for monitoring the closed state of safety equipment (2) of a machine (3). The device (1) is provided with a switch head (10) and an actuator (8), which can be brought into interaction with one another to control the device (1). The switch head (10) has an optical signaler (14) for optically signaling an operational state of the actuator (8) provided with a light-guide (28) having at least one entrance window (32) and at least one exit window (34, 36). In a state of the device (1) in which the switch bead (10) and the actuator (8) are interacting with one another, the light emitted by the signaler (14) enters, at least in part, via the at least one entrance window (32) and exits via the at least one exit window (34. 36).
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