Measuring and testing – Simulating operating condition – Marine
Patent
1983-09-21
1984-10-16
Myracle, Jerry W.
Measuring and testing
Simulating operating condition
Marine
340 59, G01F 1304, G01F 2322
Patent
active
044767145
ABSTRACT:
The dipstick has an enlarged head and an integral, flexible shank which extends slidably through the dipstick tube of a conventional engine crankcase so that a pair of spaced thermistors, which are mounted on the shank adjacent its inner end, normally will be immersed beneath the level of the oil in the crankcase. The shank contains a ground conductor which is connected adjacent one end to one side of the thermistors, and adjacent its opposite end has sliding, resilient engagement with the inside of the dipstick tube. The opposite sides of the thermistors are connected by two additional conductors which extend upwardly in the shank to register with a pair of openings that are formed in diametrally sides of the shank near the dipstick head. A clamp, which is secured to the outer end of the dipstick tube, carries a pair of spaced terminals, the inner ends of which project through the opposed openings in the dipstick and slidably and resiliently into engagement with the upper ends of the two conductors, when the dipstick is seated in the dipstick tube. The opposite ends of these two terminals are releasably connected to an indicator circuit which produces an alarm signal when the temperature differential detected by the two thermistors exceeds a predetermined value.
REFERENCES:
patent: 3500687 (1970-03-01), Smith
patent: 3570312 (1971-03-01), Kreith
patent: 3890588 (1975-06-01), Kanaya et al.
patent: 4186604 (1980-02-01), Matilla
patent: 4322713 (1982-03-01), Duck et al.
Barry Leon G.
Rieman Willis
Fasco Controls Corporation
Myracle Jerry W.
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