Electricity: motive power systems – Automatic and/or with time-delay means – Speed or rate-of-movement
Reexamination Certificate
2005-04-05
2005-04-05
Duda, Rina (Department: 2837)
Electricity: motive power systems
Automatic and/or with time-delay means
Speed or rate-of-movement
C318S569000, C318S600000, C318S603000, C318S606000, C318S632000, C318S651000
Reexamination Certificate
active
06876167
ABSTRACT:
A non-invasive apparatus and method for measuring the speed of a rotating device that includes a sensor that measures a dynamic characteristic of the rotating device. A sample of the signal is transformed from the time domain into a frequency spectrum. The frequency spectrum is then analyzed to determine the motor speed. The resulting motor speed can be combined with other motor data by an order analysis to identify malfunctioning or improperly installed components.
REFERENCES:
patent: 4109170 (1978-08-01), Fujita et al.
patent: 4260920 (1981-04-01), Nakamura et al.
patent: 4329636 (1982-05-01), Uchida et al.
patent: 4385249 (1983-05-01), Fukushima
patent: 4578606 (1986-03-01), Welterlin
patent: 4701650 (1987-10-01), Maemine
patent: 4751415 (1988-06-01), Kitamori et al.
patent: 4755701 (1988-07-01), Shikama
patent: 4902923 (1990-02-01), Okauchi
patent: 5361010 (1994-11-01), Muller
patent: 5412999 (1995-05-01), Vigmostad et al.
patent: 5610457 (1997-03-01), Kurita
patent: 5686770 (1997-11-01), Naito
patent: 5717268 (1998-02-01), Carrier et al.
MacMillan Sobanski & Todd LLC
TRW Automotive U.S. LLC
LandOfFree
Method and apparatus for determining the rotational rate of... 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 determining the rotational rate of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining the rotational rate of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3384327