Printing – Processes – Condition responsive
Reexamination Certificate
2006-06-27
2006-06-27
Hirshfeld, Andrew H. (Department: 2854)
Printing
Processes
Condition responsive
C454S050000, C454S051000, C454S052000, C454S053000, C454S054000, C454S059000, C454S067000
Reexamination Certificate
active
07066091
ABSTRACT:
Methods and apparatus for controlling impurity levels in an enclosed printing press environment are disclosed. A disclosed system controls impurity levels by using variable speed fans to control the intake of air into the enclosed environment and the exhausting of air from the enclosed environment. The exhaust fan is used to control the impurity levels within the enclosed environment. Adjustments to the speed of the exhaust fan are based on sensors which measure impurity levels in the enclosed environment. The intake fan is used to maintain a constant static pressure level within the enclosed environment. Adjustments to the intake fan speed are based on static pressure sensors within the enclosed environment.
REFERENCES:
patent: 3545675 (1970-12-01), Taylor
patent: 3905126 (1975-09-01), Villalobos et al.
patent: 4392417 (1983-07-01), Johannsen
patent: 4407185 (1983-10-01), Haines et al.
patent: 4437608 (1984-03-01), Smith
patent: 4478048 (1984-10-01), Dills
patent: 4773311 (1988-09-01), Sharp
patent: 4841733 (1989-06-01), Dussault et al.
patent: 4902315 (1990-02-01), Spicer
patent: 4938404 (1990-07-01), Helms et al.
patent: 4963168 (1990-10-01), Spencer
patent: 4995307 (1991-02-01), Floyd
patent: 5060396 (1991-10-01), Hansen
patent: 5115967 (1992-05-01), Wedekind
patent: 5134788 (1992-08-01), Stibbe et al.
patent: 5197666 (1993-03-01), Wedekind
patent: 5257736 (1993-11-01), Roy
patent: 5312297 (1994-05-01), Dieckert et al.
patent: 5356334 (1994-10-01), Gray
patent: 5643077 (1997-07-01), Ayer
patent: 5720658 (1998-02-01), Belusa
patent: 5819721 (1998-10-01), Carr et al.
patent: 5928077 (1999-07-01), Kisakibaru
patent: 6143080 (2000-11-01), Bartholomew et al.
patent: 6312328 (2001-11-01), Nakajima et al.
patent: 6481635 (2002-11-01), Riley et al.
patent: 6514138 (2003-02-01), Estepp
patent: 2002/0092198 (2002-07-01), Bria et al.
patent: 2002/0178954 (2002-12-01), Hayashi et al.
Crenshaw Marvin P.
Hanley, Flight & Zimmerman
Hirshfeld Andrew H.
R.R. Donnelley & Sons Company
LandOfFree
Methods and apparatus for controlling impurity levels in an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus for controlling impurity levels in an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for controlling impurity levels in an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3692120