Electricity: measuring and testing – Determining nonelectric properties by measuring electric... – Particle counting
Reexamination Certificate
2005-02-22
2005-02-22
Vu, David (Department: 2828)
Electricity: measuring and testing
Determining nonelectric properties by measuring electric...
Particle counting
C324S464000
Reexamination Certificate
active
06859024
ABSTRACT:
A device (10) for detecting the presence of an airborne, electrically conductive particle, the device including spaced conductors (24,26) and a circuit (12) for detecting when the electrically conductive particle forms a conducting path between the spaced conductors (24,26). The conductors (24,26) are provided in a grid (14) of alternate elongate conductors, and the circuit (12) applies a voltage to one set (24) of conductors sufficient to detect and destroy the particle when it creates a conductive path to the alternate set (26) of conductors.
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Patent Abstracts of Japan; Publ. No. 04-314345; Publ. Date May 11, 1992; Appl. No. 03-079417; Applicant: NEC Corp; Inventor: Tajima Fumihiko; Title: Whisker Detector.
Molnar Stephen Michael
Nolte David Allan
Dorsey & Whitney LLP
Telstra New Wave Pty Ltd.
Vu David
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