Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Electrostatic attraction or piezoelectric
Reexamination Certificate
2011-05-10
2011-05-10
Hollington, Jermele M (Department: 2858)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Electrostatic attraction or piezoelectric
Reexamination Certificate
active
07940040
ABSTRACT:
An apparatus for detecting a static field includes two surfaces of conductive material that are: (i) electrically coupled to each other, and (ii) adjacent to each other. The two surfaces repel each other in the presence of a static field. A rupturable indicator bridging and coupled between the two surfaces ruptures upon repulsion of the two surfaces from each other by at least a predetermined distance.
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Hollington Jermele M
Illinois Tool Works Inc.
Panitch Schwarze Belisario & Nadel LLP
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