Signal unit having and acoustic signal transmitter

Details Signal unit having and acoustic signal transmitter Signal unit having and acoustic signal transmitter

2006-03-10

2008-12-16

Bugg, George A (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specified indicator structure

C340S933000

Reexamination Certificate

active

07466238

ABSTRACT:
A signal unit is provided for signaling at least one operating state of a technical device such as a machine, installation, vehicle, or the like, having at least one acoustic signal transmitter (2) for generating an acoustic signal, thereby improving the monitoring of the technical device. This is achieved according to the invention by providing a sensor unit or detecting an acknowledgment of the signal.

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