Engine speed indicator

Details Engine speed indicator Engine speed indicator

G - Physics

01

P

340/148.4

G01P 3/48 (2006.01) G01P 3/486 (2006.01)

Patent

CA 1113583

ENGINE SPEED INDICATOR Abstract of the Disclosure An engine rpm sensor utilizes a gas filled lamp for connection to a circuit, including an engine ignition system and a spark plug. A light pipe is exposed to the lamp and couples an optical signal each time a spark plug is fired to a remote location for utilization in a display or indicating device.

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