Electricity: motive power systems – Plural diverse motor controls – Running-speed control
Reexamination Certificate
2011-01-04
2011-01-04
Ip, Paul (Department: 2837)
Electricity: motive power systems
Plural diverse motor controls
Running-speed control
C318S280000, C318S463000, C318S609000, C062S178000, C123S041120, C236S035000
Reexamination Certificate
active
07863839
ABSTRACT:
A fan speed control system for a machine is disclosed. The control system may include a fan to provide a flow of coolant to the machine. The system may further include a first sensor configured to generate a first signal indicative of an operational parameter of the machine, a second sensor associated with the fan to generate a second signal indicative of an actual speed of the fan, and a controller communicatively coupled to the fan, the first sensor, and the second sensor. The controller may be configured to generate a third signal indicative of a desired fan speed based on the first signal, and a fourth signal indicative of a difference between the desired fan speed and the actual fan speed. The controller may drive the fan based on the third signal and the fourth signal.
REFERENCES:
patent: 4124001 (1978-11-01), Samuel et al.
patent: 4479532 (1984-10-01), Watanabe
patent: 4828088 (1989-05-01), Mohan et al.
patent: 4874072 (1989-10-01), Mohan et al.
patent: 6079536 (2000-06-01), Hummel et al.
patent: 6328000 (2001-12-01), Hawkins et al.
patent: 6481388 (2002-11-01), Yamamoto
patent: 6571751 (2003-06-01), Vogt
patent: 6772714 (2004-08-01), Laird et al.
patent: 6779981 (2004-08-01), Huang et al.
patent: 6824362 (2004-11-01), Dodson, III
patent: 6894883 (2005-05-01), Buchholz
patent: 7424806 (2008-09-01), Tien et al.
patent: 2002/0066422 (2002-06-01), Hawkins et al.
patent: 2006/0037334 (2006-02-01), Tien et al.
patent: 2006/0096554 (2006-05-01), Shiozaki
patent: 1 002 361 (1999-02-01), None
patent: 1450061 (2004-08-01), None
Norman Douglas I.
Peresta Paul W.
Schuricht Scott Richard
Wilson Arvil Duane
Caterpillar Inc
Finnegan Henderson Farabow Garrett & Dunner LLP
Ip Paul
Myers Carl E.
LandOfFree
Fan speed control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fan speed control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fan speed control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2693616