Differential signal acquisition probe having retractable...

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element

Reexamination Certificate

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Reexamination Certificate

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07126360

ABSTRACT:
A differential measurement probe has spring loaded probe assemblies and a pressure sensors disposed in a housing. The pressure sensors forms an electrical switch having an electrical AND function for passing an activation signal to a EOS/ESD protection control module in response to axial movement of the housing relative to the probe assemblies. First compressive elements produces first pre-loaded compressive forces and increasing compressive forces on the probe assemblies and second compressive elements produces second pre-loaded compressive forces and increasing compressive forces on the probe assemblies subsequent to the first increasing compressive forces on the probe assemblies.

REFERENCES:
patent: 4721903 (1988-01-01), Harsch et al.
patent: 6704670 (2004-03-01), McTigue
patent: 6734689 (2004-05-01), Yang
http://www.candox.co.jp/, Candox Systems, Inc., CP400-04 probe, no date.

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