Communications: electrical – Condition responsive indicating system – Specified housing
Patent
1996-07-19
1998-05-12
Mullen, Thomas
Communications: electrical
Condition responsive indicating system
Specified housing
340628, 340630, G08B 2300
Patent
active
057512183
ABSTRACT:
A smoke detection unit has a detection chamber for sampling smoke from a surrounding environment. The detection chamber allows air circulation but is optically opaque. This configuration is typical of photoelectric smoke detectors, for example. A housing defines a window though which air from the environment circulates into and out of the detection chamber. The window's height is approximately the same as the chamber. A cage vane is positioned in the window and is configured as an inverted frustoconical member. An inner edge of the cage vane is spaced away from the chamber. The angled vane, along the other aspects of the unit's configuration, improves sensitivity by increasing smoke circulation through the chamber. This configuration guides the air currents typically created by fires at the ceiling so that the smoke flows easily into the detection chamber.
REFERENCES:
patent: D204916 (1966-05-01), Blevins
patent: D215039 (1969-08-01), Nagao
patent: D215040 (1969-08-01), Nagao
patent: D226539 (1973-03-01), Fearsall
patent: D235629 (1975-07-01), Steele et al.
patent: D235857 (1975-07-01), Hart
patent: D238057 (1975-12-01), Pearsall et al.
patent: D241824 (1976-10-01), Mackay
patent: D244362 (1977-05-01), Mayer
patent: D247164 (1978-02-01), Lowell
patent: D253525 (1979-11-01), Wilson
patent: D269161 (1983-05-01), Fenne
patent: D269331 (1983-06-01), Fenne
patent: D271287 (1983-11-01), Fenne
patent: D275187 (1984-08-01), Skarman
patent: D276417 (1984-11-01), Fenne
patent: D279872 (1985-07-01), Thornton, Jr. et al.
patent: D283407 (1986-04-01), Fenne
patent: D308836 (1990-06-01), Fenne
patent: D316828 (1991-05-01), Amemiya et al.
patent: D318437 (1991-07-01), Kojima et al.
patent: D319798 (1991-09-01), Hatano
patent: D332231 (1993-01-01), Akimoto et al.
patent: D339078 (1993-09-01), Behlke
patent: D339756 (1993-09-01), Igarashi et al.
patent: D339998 (1993-10-01), Igarashi et al.
patent: D340201 (1993-10-01), Fenne et al.
patent: D340416 (1993-10-01), Fenne
patent: D340659 (1993-10-01), Fenne
patent: D342213 (1993-12-01), Fellmann
patent: D355386 (1995-02-01), Fellmann
patent: D355862 (1995-02-01), Tice et al.
patent: D357202 (1995-04-01), Ozawa
patent: D357203 (1995-04-01), Ozawa
patent: D361732 (1995-08-01), Fischette et al.
patent: 4168438 (1979-09-01), Morisue
patent: 4851819 (1989-07-01), Kawai et al.
patent: 5546074 (1996-08-01), Bernal et al.
patent: 5568133 (1996-10-01), Durrer et al.
Simplex Time Recorder Company, Pamphlet, "TrueAlarm Fire Alarm Systems," Publication S4098-0003-8, 4 pps, Jan., 1995.
Simplex Time Recorder Company, Pamphlet, "Multi-Application Peripherals and Accessories,", Publication S4098-0007-4, 4 pps, Apr. 1995.
Simplex Time Recorder Company, Leaflet, "Multi-Application Peripherals and Accessories," Publication S2098-0048-9, 1 p., Mar. 1995.
Simplex Time Recorder Company, Leaflet, "Multi-Application Peripherals and Accessories," Publication S2098-0049-6, 1 p., Feb., 1994.
Simplex Time Recorder Company, Leaflet, "Multi-Application Peripherals and Accessories," Publication S2098-0056-2, 1 p., Jun., 1994.
Simplex Time Recorder Company, Leaflet, "Multi-Application Peripherals and Accessories," Publication S2098-0055-4, 1 p., Feb., 1994.
Nelson Wayne
Stanley Lawrence G.
Winterble Charles
Huang Sihong
Mullen Thomas
Simplex Time Recorder Company
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