Telephonic communications – Emergency or alarm communications – Responsive to sensed nonsystem condition
Patent
1996-05-20
1998-06-09
Chan, Wing F.
Telephonic communications
Emergency or alarm communications
Responsive to sensed nonsystem condition
379 49, 379438, 340566, H04M 1104
Patent
active
057647291
ABSTRACT:
The present invention is directed to a tamper protection device for protecting a telephone operated security alarm system. In particular, it protects a conventional security alarm system using telephone service lines from being disabled by an intruder before the alarm system has a chance to function. Telephone service lines are generally accessible from the exterior of the structure. The alarm system is protected by providing an service enclosure having a strong box and a dual conduit assembly to enclose the telephone service box and telephone service lines. The essential conduit assembly has inner and outer slotted concentric conduits to fully protect the service lines. The protection device includes sensors and switches to inform the security monitor before an intruder can disable the alarm system. A vibration sensor is activated when movements of the strong box and conduit occur and a signal is generated to announce the intruder. The strong box has two access doors where the locked outside door must be opened to access the locked inside door. Each access door has a separate tamper switch means that generates a signal to also activate the alarm system. If the outside door is defeated the inside door continues to provide security. Another tamper switch means is provided to activate the alarm system if the intruder attempts to remove the strong box from its supporting surface. A total of four separate and redundant signals can activate the security alarm system to announce an intruder.
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Manufacturer's Sales Brochure Telephone Line Security; undated Enclosures for Security, Las Vegas, NV.
Manufacturer's Sales Brochure Omegalarm D8108A Attack Resistant Enclosure Fax date: Jul. 11, 1995 Radionics, Salinas, CA.
Black Brian W.
Clift Brian K.
Brian Company Enterprises
Chan Wing F.
Flint Cort
Reed Robert R.
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