Communications: electrical – Traffic control indicator – Portable
Reexamination Certificate
2006-08-15
2008-09-09
Hofsass, Jeff (Department: 2612)
Communications: electrical
Traffic control indicator
Portable
C340S907000, C116S06300T, C040S446000, C040S611130, C040S607010
Reexamination Certificate
active
07423551
ABSTRACT:
A temporary or portable traffic signal can be utilized to regulate traffic during power outages. However, when power is restored and the normal operation of the permanently installed traffic signal resumes, then a method of interconnecting the permanent and temporary systems ensures that the operation of the two system are synchronized in predetermined and/or selectable modes of operation. Whenever power is available, an interface detects operation of the permanently installed main system and produces signals that can be used in one mode of operation to direct the portable system to ignore its internal timing sequences and synchronize with the main system, or in another mode of operation to cease its operation.
REFERENCES:
patent: 3863214 (1975-01-01), Kerr, Jr.
patent: 5252696 (1993-10-01), Laas et al.
patent: 5504481 (1996-04-01), Wys
patent: 5695305 (1997-12-01), Heym
patent: 5805081 (1998-09-01), Fikacek
patent: 6034609 (2000-03-01), Comiskey, Jr.
patent: 6118388 (2000-09-01), Morrison
patent: 6392563 (2002-05-01), Paquette et al.
patent: 6847306 (2005-01-01), Diba et al.
patent: 7193529 (2007-03-01), Shah
Hofsass Jeff
Labbees Edny
Nash Kenneth L.
LandOfFree
Method and apparatus for controlling temporary traffic signals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for controlling temporary traffic signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling temporary traffic signals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3981069