Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2006-04-18
2006-04-18
Deb, Anjan (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S522000, C360S125330
Reexamination Certificate
active
07030623
ABSTRACT:
A vehicle testing apparatus and method which facilitates tracing and isolating of short circuits. The tester preferably provides a user-selected constant current level (i.e. 1, 3 and 6 amperes) for driving a vehicle short under test at a constant current level compatible with the circuit. Any significant changes in the conductance of the vehicle short under test are registered in response to circuit voltage changes. An annunciator is activated in response to sudden significant conductance changes (preferably conductance decreases) which exceed a threshold level. Annunciation (preferably including audio output) allows the operator to immediately correlate movements of specific regions of wiring, or other circuit elements, with changes in the detected short conductance for the shorted circuit being tested. By way of example and not of limitation the tester may be implemented inexpensively with low cost analog circuitry, and does not require incorporating a microcontroller.
REFERENCES:
patent: 3569826 (1971-03-01), Burnett
patent: 3757169 (1973-09-01), Beresnikow
patent: 3991413 (1976-11-01), Berger
patent: 4237721 (1980-12-01), Dolan
patent: 4799019 (1989-01-01), Cooley et al.
patent: 4937529 (1990-06-01), O'Toole, II
patent: 5030916 (1991-07-01), Bokitch
patent: 5065104 (1991-11-01), Kusko et al.
patent: 5095276 (1992-03-01), Nepil
patent: 5144226 (1992-09-01), Rapp
patent: 5382909 (1995-01-01), Masia et al.
patent: 5514964 (1996-05-01), Benesh et al.
patent: 5721688 (1998-02-01), Bramwell
patent: 5903160 (1999-05-01), Ianenko et al.
patent: 5905439 (1999-05-01), McIntyre
patent: 5914608 (1999-06-01), Wissman et al.
patent: 6160405 (2000-12-01), Needle et al.
patent: 6323654 (2001-11-01), Needle et al.
patent: 6922060 (2005-07-01), Wendel et al.
Deb Anjan
Natalini Jeff
O'Banion John P.
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