Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Reexamination Certificate
2007-08-28
2007-08-28
Noori, Max (Department: 2855)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
Reexamination Certificate
active
11020289
ABSTRACT:
A force sensing membrane comprises (a) a first conductor that is movable toward a second conductor; (b) a second conductor; and (c) a composite material disposed between the first and second conductors for electrically connecting the first and second conductors under application of sufficient pressure therebetween; and (d) means for measuring dynamic electrical response across the force sensing membrane, the composite material comprising conductive particles at least partially embedded in an elastomeric layer, the conductive particles having no relative orientation and being disposed so that substantially all electrical connections made between the first and second conductors are in the z direction, and the elastomeric layer being capable of returning to substantially its original dimensions on release of pressure.
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Fulton et al., Electrical and Mechanical Properties of a Metal-Filled Polymer Composite for Interconnection and Testing Applications, AT&T Bell Laboratories, 0569-5503/89/0071.
Chen Pei-Jung
Divigalpitiya Ranjith
Kanno David A.
Miholics Gabriella
Patel Vijay
3M Innovative Properties Company
Fulton Lisa P.
Noori Max
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