Mechanism for indicating when to change engine oil

Details Mechanism for indicating when to change engine oil Mechanism for indicating when to change engine oil

1992-08-10

1994-06-21

Yasich, Daniel M.

Signals and indicators

Indicators

Operator movable

180279, 368 5, G04F 800

Patent

active

053220331

ABSTRACT:
A mechanism for measuring the running time of an internal combustion engine includes a numerical display of the engine running hours, such that the owner of the engine can better determine the appropriate time for changing the engine lubrication oil. A chronometer is controlled by a switch responding sensitively to engine temperature or vibration, so that the chronometer is actuated only while the engine is working. The mechanism is incorporated into the handle of an oil dipstick, which enables the engine owner to check the chronometer at the same time as he/she is checking the engine oil level.

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patent: 4876529 (1989-10-01), Kubota et al.
patent: 4912687 (1990-03-01), Treeby
patent: 5043697 (1991-08-01), Ayabe et al.

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