Oil pressure alarm device for motor vehicle

Details Oil pressure alarm device for motor vehicle Oil pressure alarm device for motor vehicle

1991-09-23

1993-07-20

Ng, Jin F.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340438, 340461, 340626, B60Q 100

Patent

active

052297454

ABSTRACT:
An oil pressure alarm device for a motor vehicle comprises, an oil pressure switch, the oil pressure switch being activated to a conductive state when the circulation oil pressure of engine oil decreases below a predetermined level, alarm device for forming first current path in response to a conductive and non-conductive operation of the oil pressure switch after main power switch is turned on, condition detecting device for producing a detection signal in response to rotation of the engine, delay device for producing an enabling signal after a predetermined time of period has elapsed from when the detection signal is supplied from the condition detecting device, and alarm control device for forming second current path for the alarm device when the oil pressure switch is turned on under the condition that the enabling signal is outputted by the delay device, and for maintaining the second current path while the enabling signal is supplied from the delay device to the warning control circuit.

REFERENCES:
patent: 2728903 (1955-12-01), Myers
patent: 3119991 (1964-01-01), Nallinger
patent: 3866166 (1975-02-01), Kerecher
patent: 3906440 (1975-09-01), Haupt
patent: 3927390 (1975-12-01), Hill
patent: 4021794 (1977-05-01), Carlson
patent: 4984543 (1991-01-01), Tharman
patent: 5107248 (1992-04-01), Koiwa et al.

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