Ventilation – Fire damper
Reexamination Certificate
2007-04-11
2008-12-09
McAllister, Steven B (Department: 3749)
Ventilation
Fire damper
C454S257000, C454S357000, C126S287500
Reexamination Certificate
active
07462100
ABSTRACT:
A fire damper assembly has a damper mounted in an air duct for movements between an open, air passing position in which the damper enables air to flow through the duct and a closed position in which the damper blocks the passage of air through the duct. A strut composed of joined but separable components normally underlies the damper and supports the latter in the open position. The strut may be moved from its damper engaging position to a damper-free position while the separable components remain joined. At least one end of the strut is pivotally connected to a support arm for swinging movements of the strut between damper engaging and damper-free positions and may have its opposite end manually detached from the second support arm, thereby enabling the damper to swing to its closed position. The respective support arms are removably maintained in strut-supporting position by releasable latches which enable a tactile sensing of their positions.
REFERENCES:
patent: 77068 (1868-04-01), McNeill
patent: 357148 (1887-02-01), Hall
patent: 2451591 (1948-10-01), Tinnerman et al.
patent: 2986792 (1961-06-01), Wyatt
patent: 3024509 (1962-03-01), Hamann
patent: 3467163 (1969-09-01), Vassaux
patent: 3485284 (1969-12-01), Turner et al.
patent: 3687185 (1972-08-01), Singer
patent: 3796246 (1974-03-01), Walenta
patent: 3826223 (1974-07-01), Lingo, Jr.
patent: 4333392 (1982-06-01), Nailor et al.
patent: 4520537 (1985-06-01), Valikov
patent: 4667910 (1987-05-01), Atterby et al.
patent: 4763711 (1988-08-01), Hart et al.
patent: 4795353 (1989-01-01), Baker
patent: 5120152 (1992-06-01), Gueli
patent: 5231740 (1993-08-01), Mohebkhosravi
patent: 5241727 (1993-09-01), Lee
patent: 5267125 (1993-11-01), Liu
patent: 5272795 (1993-12-01), Rothstein
patent: 5309616 (1994-05-01), Sobin
patent: 5819380 (1998-10-01), Paolercio et al.
patent: 6318399 (2001-11-01), Backham et al.
patent: 2028128 (1980-03-01), None
patent: 2150829 (1985-07-01), None
patent: 2180745 (1987-04-01), None
patent: 2249479 (1992-05-01), None
patent: 08-308949 (1996-11-01), None
patent: 2002-200186 (2002-07-01), None
Globe Technologies Corporation
McAllister Steven B
McCulloch John K.
O'Reilly, III Patrick F.
LandOfFree
Fire damper assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fire damper assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fire damper assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4029298