Communications: electrical – Condition responsive indicating system – With particular system function
Reexamination Certificate
2006-11-21
2006-11-21
Hofsass, Jeffery (Department: 2636)
Communications: electrical
Condition responsive indicating system
With particular system function
C340S539270, C340S545100, C340S577000, C340S584000, C340S590000, C340S628000, C340S528000, C049S007000, C160S007000, C160S009000, C292S092000, C318S009000, C318S269000, C318S282000
Reexamination Certificate
active
07138912
ABSTRACT:
Movement of a movable barrier (10) such as, for example, a vertically-dropping fire door, can be controlled in an informed manner and with greater flexibility regarding the manner of movement via, in one embodiment, use of a motor (20) as a generator to resist the downward movement of the barrier. One or more dummy electrical loads (22) can be used in combination with the generator mode of operation to influence the degree of braking proffered by the motor. In various embodiments, one or more sensors (25, 26, 27) can be used to detect local and remote conditions of interest to thereby at least partially inform the barrier movement decision process. A display (90) (or displays) can serve to provide various kinds of information to authorized personnel and an operator control (120) can serve, at least under some operating circumstances, to permit a person to locally cause a closed barrier to move to at least a partially opened position.
REFERENCES:
patent: 4220051 (1980-09-01), Catlett
patent: 4289995 (1981-09-01), Sorber et al.
patent: 4338526 (1982-07-01), Martin et al.
patent: 4697383 (1987-10-01), Hagiwara
patent: 4785293 (1988-11-01), Shearer et al.
patent: 5022452 (1991-06-01), Burrell
patent: 5576581 (1996-11-01), Iannuzzi et al.
patent: 5605185 (1997-02-01), McKeon
patent: 5625980 (1997-05-01), Teich et al.
patent: 5675487 (1997-10-01), Patterson et al.
patent: 5712546 (1998-01-01), Holthouse et al.
patent: 5812391 (1998-09-01), Mehalshick
patent: 5839766 (1998-11-01), Iannuzzi et al.
patent: 5896907 (1999-04-01), Dever et al.
patent: 5903216 (1999-05-01), Sutsos et al.
patent: 5955947 (1999-09-01), Sutsos et al.
patent: 6082433 (2000-07-01), Vafaie et al.
patent: 6155324 (2000-12-01), Elliott et al.
patent: 6225768 (2001-05-01), Cookson et al.
patent: 6318296 (2001-11-01), Nguyen
patent: 6484784 (2002-11-01), Weik et al.
patent: 2002/0170685 (2002-11-01), Weik et al.
patent: 2003/0146823 (2003-08-01), Jansson
patent: 2003/0213177 (2003-11-01), Fitzgibbon et al.
patent: 19637039 (1997-11-01), None
patent: 0559947 (1993-09-01), None
patent: 0688933 (1995-12-01), None
patent: 0959222 (1999-11-01), None
patent: 1504167 (2003-11-01), None
patent: 2399597 (2004-09-01), None
patent: WO 95/14323 (1995-05-01), None
Derwent-Acc-No. 1997-527885: Ciliox V, Braking device for smoke protection curtain, garage door, fire protection curtain etc wound on electric motor powered roller—has electrical connection between roller brake and drive motor during unrolling process.
Fitzgibbon James J.
Gavel Andrew
Gioia William
Fitch Even Tabin & Flannery
Hofsass Jeffery
Lai Anne V.
The Chamberlain Group, Inc.
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