Audible and audible-visible alarms with interchangeable cover

Details Audible and audible-visible alarms with interchangeable cover Audible and audible-visible alarms with interchangeable cover

1998-03-20

1999-10-19

Lee, Benjamin C.

Communications: electrical

Condition responsive indicating system

Specified housing

3406935, 3406939, 3406933, 340692, 3406917, 34081573, 34081574, 3403841, 3403911, 3403961, G08B 2300

Patent

active

059696273

ABSTRACT:
The bases of an audible alarm unit and an audible/visible alarm unit are configured to be used interchangeably with a single cover. The cover has an opening that receives a projecting wall portion on the base of the audible alarm unit and a receptacle for a strobe lamp unit on the base of the audible/visible alarm unit. The bases have mounting holes that enable the alarm units to be mounted on several types of standard backboxes, the cover concealing the screw holes for good appearance of the installed units.

REFERENCES:
patent: 4929093 (1990-05-01), Suzuki et al.
patent: 5486816 (1996-01-01), Ariga et al.
patent: 5621387 (1997-04-01), Phillips et al.
patent: 5684467 (1997-11-01), Hur
patent: 5710541 (1998-01-01), Stanley et al.
patent: 5767782 (1998-06-01), Mongeau
Wheelock brochure (P82467-001F), Installation Instructions Multitone Signals MT-12/24, MT4-12/24 (1993,1994); pp. 1-4.
Wheelock brochure, "Fire Alarm Systems, Series AMT and AMT Strobe Multitone Electronic Appliances" (1997).
Wheelock brochure, "Fire Alarm Systems, Series NS/NS4 Horn Strobe Appliances--Series NH Horn Appliance" (1997).
Wheelock brochure, "Fire Alarm Systems, Series RS Strobes and Series RSS Non-Sync/Sync Strobes" (1998).
Wheelock brochure, Series MT and MT Strobe Multitone Electronic Signals; p. 8.
Wheelock Inc brochure, "Fire Alarm Systems, Series NS/NS4 Horn Strobe Appliances--Series NH Horn Appliances" 1997.

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