Dual voltage circuit tester

Details Dual voltage circuit tester Dual voltage circuit tester

2005-05-03

2005-05-03

Zarneke, David (Department: 2829)

Electricity: measuring and testing

Testing potential in specific environment

Voltage probe

C324S133000, C324S324000, C324S556000

Reexamination Certificate

active

06888341

ABSTRACT:
A handheld dual voltage circuit tester, method and electronic circuit that quickly allows a technician to determine whether an automotive electrical system runs on a 12-14 volt circuit or 36-42 volt circuit. The tester may be used for automobiles having a single voltage electrical system, or automobiles with distinct electrical systems operating on one of a 12-14 volts circuit or a 36-42 volt circuit. The tester includes a screwdriver-type elongated handle and probe tip. The tester also includes electronic circuitry disposed within its handle, heat shrink tubing, a conductive spring assembly, a strain relief, a retractable coil cord, a ground clip and insulation that encloses the ground clip. The tester also includes electronic circuitry that emits light of a first color when a 12-14 volt circuit is sensed, and light of a second color when a 36-42 volt circuit is sensed.

REFERENCES:
patent: 4527118 (1985-07-01), Koslar
patent: 5789911 (1998-08-01), Brass
patent: 6433530 (2002-08-01), Pool
patent: 6512361 (2003-01-01), Becker

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