Communications – electrical: acoustic wave systems and devices – Signal transducers
Reexamination Certificate
2008-03-25
2008-03-25
Pihulic, Dan (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Signal transducers
C367S165000
Reexamination Certificate
active
10557195
ABSTRACT:
A pressure control apparatus according to the present invention is comprised of a magnetostrictive element section disposed between respective one ends of rotating rods which have the one ends thereof arranged on the same axis in a state connected to each other such that they are unrotatable relative to each other but at the same time are movable toward and away from each other, the rotating rods being rotatable about the axis in unison with each other, an urging means for urging the rotating rods to cause them to be closer to each other to thereby bring the respective one ends of the rotating rods into intimate contact with ends of the magnetostrictive element section, respectively, a magnetic field-applying means for generating a magnetic field for use in adjusting the length of the magnetostrictive element section to apply the magnetic field to the magnetostrictive element section, a pressure-detecting means for detecting pressure generated in the rotating rods in the direction of the axis, and a control section for controlling detected pressure such that it is constant, by controlling a strength of the magnetic field to adjust the length of the magnetostrictive element section.
REFERENCES:
patent: 6565333 (2003-05-01), Maruyama
patent: 7131555 (2006-11-01), Maruyama et al.
patent: 2002/0025260 (2002-02-01), Maruyama
patent: 2007/0133353 (2007-06-01), Suzuki et al.
patent: 7-236292 (1995-09-01), None
patent: 11-159537 (1999-06-01), None
English language abstract of JP 7-236292.
English language abstract of JP 11-159537.
Mori Teruo
Suzuki Toshihiro
Greenblum & Bernstein P.L.C.
Pihulic Dan
TDK Corporation
LandOfFree
Pressure control apparatus and rotation drive mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure control apparatus and rotation drive mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure control apparatus and rotation drive mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3933655