Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1982-12-23
1985-11-12
Rowland, James L.
Communications: electrical
Condition responsive indicating system
Specific condition
200 6176, 200 6181, 200 6193, 340546, 340547, 340550, 340689, 384299, G08B 1308
Patent
active
045531340
ABSTRACT:
An electrical system is provided for attachment to basement windows or the like for the purpose of sounding an alarm automatically if the window is opened and the device is moved or tampered with. The system comprises a spring-loaded bar or a tube within a tube which is placed in the window frame without the need for screws, adhesive or other fastening means. When installed and spring-loaded, the assembly holds an electric switch in place against the side wall of the window. If the assembly is jarred or moved the switch is released, the electrical connection is either made or broken and an alarm is sounded.
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patent: 4384181 (1983-05-01), Booden
Alarm Accessory Ltd.
Mullen Jr. Thomas J.
Rowland James L.
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