发明名称 Secured housing for alarm instrumentation - comprises cylindrical housing with plate located internally with end caps in contact to close alarm switch
摘要 <p>A secured and tamper proof housing for detector instrumentation used in alarm systems enables a warning to be made in the event of unwanted entry. The housing is in the form of a cylinder (1) with two sealing end caps (8). A plate (20) is located in the bore between guides and carries a limit switch at one end (23). One end cap (9) is secured (19) to the plate before insertion in the tube. The second end cap has an associated washer (12) with a slot (17) to locate on the strip. The cap (8) and washer are separated by a spring washer. When clamped (14) the limit switch is activated. When either cap is removed the limit switch is triggered and an alarm made.</p>
申请公布号 DE2611342(A1) 申请公布日期 1978.02.02
申请号 DE19762611342 申请日期 1976.03.17
申请人 FA. PERISO 发明人 SCHERRER,FERNAND
分类号 G08B13/00;G08B29/04;(IPC1-7):08B13/00;08B29/00;01S7/00 主分类号 G08B13/00
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