Electricity: motive power systems – With particular motor-driven load device – Power- or motion-transmitting mechanism
Reexamination Certificate
2008-05-13
2008-05-13
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
With particular motor-driven load device
Power- or motion-transmitting mechanism
C318S565000, C388S924000, C210S085000, C494S010000, C494S084000
Reexamination Certificate
active
07372219
ABSTRACT:
In a centrifugal separator of the type in which driving power of a motor is transmitted to a rotor via a power transmission mechanism, such as a belt, a motor-rotation signal frequency fm and a rotor-rotation signal frequency fr are computed, on the basis of which a frequency ratio A (fr/fm) is computed. When the frequency ratio A exceeds the upper limit of a first predetermined range, a warning message is displayed to prompt the user to perform maintenance. When the frequency ratio A exceeds the upper limit of a second predetermined range, an alarm message is displayed and the motor is stopped.
REFERENCES:
patent: 3661266 (1972-05-01), Von Rotel
patent: 4822331 (1989-04-01), Taylor
patent: 4827197 (1989-05-01), Giebeler
patent: 5917688 (1999-06-01), Kido et al.
patent: 6589155 (2003-07-01), Dolecek
patent: 10-118529 (1998-05-01), None
patent: 2003-010734 (2003-01-01), None
Fujimaki Takahiro
Takahashi Hiroyuki
Antonelli, Terry Stout & Kraus, LLP.
Hitachi Koki Co,. Ltd.
Ro Bentsu
LandOfFree
Belt driven centrifugal separator with multi-stage, belt... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Belt driven centrifugal separator with multi-stage, belt..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Belt driven centrifugal separator with multi-stage, belt... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2808174