Air flow controller and fire damper in an air flow duct

Details Air flow controller and fire damper in an air flow duct Air flow controller and fire damper in an air flow duct

2006-01-31

2006-01-31

Boles, Derek S. (Department: 3749)

Ventilation

Fire damper

C454S257000

Reexamination Certificate

active

06991536

ABSTRACT:
A fire damper in an air duct (2) is formed by a flap (12) which in its closed position bears on a flange (6) which extends inward from the duct wall, to form a seal. The flap (12) is biased to the closed position and held open by a cable (24) which is gripped by a releasable mechanism, such as a ball clutch. The release is triggered by a fusible cartridge (34) which extends into the duct (2).

REFERENCES:
patent: 1125416 (1915-01-01), Watson
patent: 1352255 (1920-09-01), Emerson
patent: 2242738 (1941-05-01), Alton
patent: 2270073 (1942-01-01), Merry
patent: 3260018 (1966-07-01), Schuh
patent: 3530783 (1970-09-01), Alamprese
patent: 3543439 (1970-12-01), Pantland
patent: 3669405 (1972-06-01), Baum
patent: 4060096 (1977-11-01), Schade
patent: 4114646 (1978-09-01), McCabe
patent: 4177716 (1979-12-01), Bowe et al.
patent: 4193541 (1980-03-01), Scheidweiler
patent: 4221231 (1980-09-01), Harvey et al.
patent: 4559867 (1985-12-01), Van Becelaere et al.
patent: 4581987 (1986-04-01), Ulicny
patent: 4625626 (1986-12-01), Aalto
patent: 4646847 (1987-03-01), Colvin
patent: 4958687 (1990-09-01), Nakagawa
patent: 2 261 153 (1974-07-01), None
patent: 26 09 449 (1977-09-01), None
patent: 39 33 997 (1982-12-01), None
patent: 39 33 997 (1990-05-01), None
patent: 0 046 481 (1982-03-01), None
patent: 0 067 306 (1982-05-01), None
patent: 0 160 543 (1985-11-01), None
patent: 0 270 297 (1988-06-01), None
patent: 0 300 992 (1988-07-01), None
patent: 0 300 992 (1989-01-01), None
patent: 0 314 201 (1989-05-01), None
patent: 0 343 753 (1989-11-01), None
patent: 0 447 944 (1991-03-01), None
patent: 0 732 125 (1996-09-01), None
patent: 0 816 774 (1998-01-01), None
patent: 0 816 774 (1998-01-01), None
patent: 0 824 940 (1998-02-01), None
patent: 0 829 689 (1998-03-01), None
patent: 0 829 689 (1998-03-01), None
patent: 0 887 086 (1998-12-01), None
patent: 1 338 828 (1973-11-01), None
patent: 2 103 483 (1983-02-01), None
patent: 2 103 775 (1983-02-01), None
patent: 2 107 982 (1983-05-01), None
patent: 2 136 106 (1984-09-01), None
patent: 2 176 279 (1986-12-01), None
patent: 2 230 951 (1990-11-01), None
patent: 2 255 014 (1992-10-01), None
patent: 2 255 278 (1992-11-01), None
patent: 2 260 793 (1993-04-01), None
patent: 2 271 166 (1994-04-01), None
patent: 2 329 196 (1999-03-01), None
patent: 2 330 772 (1999-05-01), None
patent: 2 333 598 (1999-07-01), None
patent: WO 84/01906 (1984-05-01), None
patent: WO 84/01907 (1984-05-01), None
patent: WO 86/05107 (1986-09-01), None
patent: WO 87/04775 (1987-08-01), None

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