US Patent: 4,506,546 - Adapter for Converting Luminosity Signals into Inductive Signals


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US Patent: 4,506,546

Adapter for Converting Luminosity Signals into Inductive Signals

Patentees:

Gene E. Olson (exact or similar names) - Kenosha, WI

Christopher B. Stout (exact or similar names) - Kenosha, WI

Donald D. Grover (exact or similar names) - Kenosha, WI

Thomas P. Becker (exact or similar names) - Kenosha, WI

USPTO Classifications:

73/119A

Tool Categories:

Assignees:

Snap-On Tools Corp. - Kenosha, WI

Manufacturer:

Not known to have been produced

Witnesses:

none listed

Patent Dates:
Applied:	Jun. 06, 1983
Granted:	Mar. 26, 1985

Patent Pictures:

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Snap-On Tools Company History

Description:

Emrich & Dithmar - patent attorneys

Abstract

The adapter includes a luminosity probe for replacing the glow plug associated with the selected cylinder in a diesel engine, a timer circuit responsive to inception of each electrical signal generated by the luminosity probe to produce a timer signal. The timer signal is differentiated to produce a spike. A pickup loop receives the spike and produces an inductive signal for application to the clip of a spark-ignited-engine timing meter.