Alarm device with door/window cross-bar

Details Alarm device with door/window cross-bar Alarm device with door/window cross-bar

1997-02-14

1999-02-16

Hofsass, Jeffery A.

Communications: electrical

Condition responsive indicating system

Specific condition

340541, 340550, G08B 1308

Patent

active

058725148

ABSTRACT:
An alarm device with cross-bar that includes a telescoping cross-bar having a spring tensioning mechanism; an alarming circuit having a pair of contact points extending out from a contact point end of the cross bar; and a contact bracket, sized to detachably hold the contact point end of the cross-bar, having a moveable contact plate constructed from an electrically conductive material provided thereon in a manner such that both of the contact points of the alarm circuit contact the moveable contact plate when the contact end of the cross-bar is held by the contact bracket. The moveable contact plate is preferably pivotally supported from a central point. In a preferred embodiment the alarm circuit of the alarm device further includes a key-strip upon which a preselected deactivation code must be entered to turn off the alarm device after activation of the audible alarm.

REFERENCES:
patent: 4027170 (1977-05-01), Hollins
patent: 4553134 (1985-11-01), Holt
patent: 4631528 (1986-12-01), Handel et al.
patent: 4837557 (1989-06-01), Striebel
patent: 4888578 (1989-12-01), Conemac
patent: 4896139 (1990-01-01), Eldridge
patent: 5258741 (1993-11-01), Fuller

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