Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2007-05-15
2007-05-15
Hofsass, Jeffery (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S632000, C340S693500, C340S693600, C340S539100
Reexamination Certificate
active
11150959
ABSTRACT:
An alarm annunciator, particularly a gas or fire annunciator, having a casing mountable on a wall or a ceiling, which contains an alarm detector, which is in wireless connection with the surroundings of the casing via at least one opening, an electronic circuitry for the evaluation of the signals of the alarm detector, a wireless module, connected to the electronic circuitry and having an antenna for wireless receiving or sending signals to/from a sending/receiving station, and a battery for the power supply of the electronic circuitry and the wireless module, characterised in that a metallic protection screen covering the opening is designed as an antenna and is connected with the antenna output socket of the wireless module.
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Hofsass Jeffery
Job Lizenz GmbH & Co. KG
Lau Hoi C.
Vidas Arrett & Steinkraus P.A.
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