Electricity: electrical systems and devices – Electrostatic capacitors – Variable
Reexamination Certificate
2006-05-16
2006-05-16
Reichard, Dean A. (Department: 2831)
Electricity: electrical systems and devices
Electrostatic capacitors
Variable
C361S291000, C361S272000, C361S277000, C361S283100, C361S282000
Reexamination Certificate
active
07046497
ABSTRACT:
A capacitive transducer of multi-layer construction includes two rotor plates supported by flexible springs, the plates being spaced apart and rigidly connected by a stem. One rotor plate my be used as either a pickup electrode or a grounded target electrode for determining position, displacement, or load force. The second rotor plate may be used for electrostatic actuation without interfering with or destroying circuitry associated with the first rotor plate. A number of improvements are disclosed including a hollow rotor plate structure for reduced moving mass, buckling resistant features for the springs, improved spring anchor joint design for reduced creep and hysteresis, and material selection and matching for reduced thermal sensitivity.
REFERENCES:
patent: 4196632 (1980-04-01), Sikorra
patent: 4694687 (1987-09-01), Bonin
patent: 4848141 (1989-07-01), Oliver
patent: 5006952 (1991-04-01), Thomas
patent: 5122922 (1992-06-01), Richeson
patent: 5261279 (1993-11-01), Wolf et al.
patent: 5499158 (1996-03-01), Bishop
patent: 5553486 (1996-09-01), Bonin
patent: 5576483 (1996-11-01), Bonin
patent: 5661235 (1997-08-01), Bonin
patent: 5869751 (1999-02-01), Bonin
patent: 6026677 (2000-02-01), Bonin
patent: 6205861 (2001-03-01), Lee
patent: 6218632 (2001-04-01), McCarthy
patent: 6357295 (2002-03-01), Wyse
patent: 6504695 (2003-01-01), Holce et al.
patent: 6520017 (2003-02-01), Schoefthaler et al.
patent: 6772646 (2004-08-01), Madni et al.
patent: 6776028 (2004-08-01), Lukay
Bonin Wayne
Ha Nguyen T.
Reichard Dean A.
LandOfFree
Multi-layer capacitive transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-layer capacitive transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-layer capacitive transducer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3540440