Electricity: measuring and testing – Testing potential in specific environment – Voltage probe
Reexamination Certificate
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
Johnson Robert D.
Mieczkowski Daniel
Schaefer Mark R.
McDermott Will & Emery LLP
Nguyen Jimmy
Snap-On Incorporated
Zarneke David
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