Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Nonquantitative
Reexamination Certificate
2011-03-15
2011-03-15
Nguyen, Hoai-An D (Department: 2858)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Nonquantitative
C324S072500
Reexamination Certificate
active
07906956
ABSTRACT:
A polarity tester is engagable with an electronic communication port to test the polarity thereof. A connector is supported on a housing and features a plurality of electrical contacts for placement into electrical connection with a respective plurality of electrical contacts in the communication port when the connector is selectively engaged therewith. The plurality of electrical contacts include a power supply contact and a ground contact and a conductive path is defined within the housing to extend between the power supply and ground contacts. An indicator is connected within the conductive path to provide to a user of the polarity tester, when the connector is engaged with the communication port, an indication of whether electricity flows into the conductive path from the respective plurality of electrical contacts in the communication port through the power supply contact.
REFERENCES:
patent: 3851243 (1974-11-01), Banner
patent: 4111516 (1978-09-01), Wireman
patent: 5270638 (1993-12-01), Mellott
patent: 6433530 (2002-08-01), Pool
patent: 2002/0057089 (2002-05-01), Brown
patent: 2006/0028194 (2006-02-01), Bosch
Jacobson and Johnson
Nguyen Hoai-An D
Phung Thomas N.
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