Self-contained, clip-on engine operating time log

Details Self-contained, clip-on engine operating time log Self-contained, clip-on engine operating time log

1992-12-28

1994-08-09

Snow, Walter E.

Electricity: measuring and testing

Internal-combustion engine ignition system or device

Apparatus for coupling a measuring instrument to an ignition...

324149, 324156, F02P 1700, G04F 800, G04B11700

Patent

active

053370031

ABSTRACT:
A self-contained, clip-on engine operating time log comprises a case containing circuitry for monitoring the accumulated operating time of a spark ignition engine. A plastic sensor, rigidly extending from the case, has two semi-cylindrical channels for clipping the time log directly onto an ignition wire of the engine. The sensor and the circuitry detect spark impulses in the ignition wire for determining the operating time of the engine. A liquid crystal display, visible through a window of the case, digitally displays the accumulated operating time.

REFERENCES:
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patent: 3213366 (1965-10-01), Eadie, Jr.
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patent: 5003518 (1991-03-01), Felder
patent: 5140257 (1992-08-01), Davis
patent: 5208541 (1993-05-01), Yerkovich et al.
Running Time Meter (RTM) by Computime, Inc.
ARM-12 Engine Hour Log by Autonnic Research International, Inc.

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