Fire extinguishers – Alarms
Patent
1991-07-19
1992-10-13
Focarino, Margaret A.
Fire extinguishers
Alarms
169 5, 169 16, A62C 3568
Patent
active
051542323
ABSTRACT:
An alarm valve and a backflow preventer are provided by a check valve and an alarm valve with a passageway provided between the check valve and the alarm valve preferably having a relief valve which selectively drains the passageway in response to the pressure in the main conduit upstream of the check valve. An alarm is sounded when the alarm valve is open. An impeller flow sensor may be provided in the backflow prevention device.
REFERENCES:
patent: 857321 (1907-06-01), Waltz
patent: 1026439 (1912-05-01), Hamilton
patent: 1414723 (1922-05-01), Brumbaugh
patent: 1428645 (1922-09-01), McDonnell
patent: 1869202 (1932-07-01), Lowe et al.
patent: 1950029 (1934-03-01), Hamilton et al.
patent: 1958143 (1934-05-01), Howard
patent: 2017841 (1935-10-01), Coleman
patent: 2505761 (1950-05-01), Gieseler
patent: 2558175 (1951-06-01), Gieseler
patent: 2646064 (1953-07-01), Colton
patent: 3837358 (1974-09-01), Zieg et al.
patent: 3888314 (1975-06-01), Landsberg
patent: 3958643 (1976-05-01), Landsberg
patent: 4287905 (1981-09-01), Iglesias
patent: 4337655 (1982-07-01), Sundstrom et al.
patent: 4361189 (1983-11-01), Adams
patent: 4489746 (1984-12-01), Daghe et al.
patent: 4991655 (1991-02-01), McHugh
"Sprinkler System Guide", The Viking Corporation, Nov. 1974.
"The Viking Corporation Sprinkler Systems Catalog", Apr. 1985.
"Wilkins Backflow Preventers", Zurn Industries, Inc. Brochure.
Lawler ITT Instruction Manual, Bulletin No. BF-10 Backflow Preventers, 1977.
Watts Regulator Brochure S-FT-TK-9A-8.
Watts Regulator Brochure ES-709L-4.
Watts Regulator Brochure RP/IS-909-8.
Watts Regulator Brochure ES-909-3.
Watts Regulator Brochure ES-AG-909-1.
Watts Regulator Brochure ES-909L-9.
Watts Regulator Brochure C-BPD-7 Backflow Prevention Devices.
Watts Regulator Brochure C-BPD-10 Backflow Prevention Devices.
NIBCO Brochure; p. 52, "Class 250 iron body automatic stop check".
NIBCO Brochure, p. 53, "Sizing the automatic stop-check F-869".
Data Industrial Advertisement, "Your best case for impeller flow sensors".
Ames Co. Brochure for vavles and backflow assemblies, "Model 5000 RPDA".
Crane Catalog, pp. 301-308, "Ferrosteel and Cast Steel Stop-Check Valves", and Ferrosteel and Cast Steel Blow-Off Valves.
Empire Speciality Co., Inc. Catalog for general automatic valves.
Back-Flo Alarm Valve Co., Inc.
Focarino Margaret A.
Kannofsky James M.
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