Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Reexamination Certificate
2006-02-15
2008-03-18
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
C073S841000
Reexamination Certificate
active
07343813
ABSTRACT:
A new capacitive sensor array comprises a first plurality of conductors separated by a compressible insulator from a second plurality of conductors lying in a second plane parallel to the first plane. The second plurality of conductors are paired to partially overlap the first plurality of conductors, two by one in sets, whereby a shear force applied in a plane parallel to the conductor array will cause capacitance between the first and second conductors to change. Serially sampling the two by one sets for changes in capacitance provides information on both the magnitude and direction of shear. Moreover, forces applied perpendicular to the planes causes the insulator to compress, thus also changing the capacitances of the two by one sets of the sensor array. In the preferred embodiment, the imbalance of voltages between the paired conductors is applied to a differential amplifier to sense shear magnitude and direction. Compression force appears as an increase in peak voltage magnitude in both of the paired conductors.
REFERENCES:
patent: 4243969 (1981-01-01), Steigerwald et al.
patent: 4951510 (1990-08-01), Holm-Kennedy et al.
patent: 5543591 (1996-08-01), Gillespie et al.
patent: 6483480 (2002-11-01), Sievenpiper et al.
patent: 6509620 (2003-01-01), Hartwell et al.
patent: 6812903 (2004-11-01), Sievenpiper et al.
patent: 7075317 (2006-07-01), Berting et al.
patent: 2003/0133372 (2003-07-01), Fasen et al.
patent: 2005/0005703 (2005-01-01), Saito et al.
Akasofu, Ken-Ichi and Neuman, Michael R. “A thin-film variable capacitance shear force sensor for medical and robotics applications”, Annual International Conference of the IEEE Engineering in Medicine and Biology Society. vol. 13, No. 4, 1991. Published Oct. 31-Nov. 3, 1991; pp. 1601-1602.
Chase, Troy A. and Luo, Ren C. “A thin-film flexible capacitive tactile normal/shear force array sensor”, Industrial Electronics, Control and Instrumentation, 1995; Proceedings of the 1995 IEEE IECON 21st International Conference on. vol. 2. Published Nov. 6-10, 1995; pp. 1196-1201.
Burns Barbara M.
Dunlap Jonathan
Lefkowitz Edward
LandOfFree
Multicapacitor sensor array does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multicapacitor sensor array, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multicapacitor sensor array will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3973124