Dipstick with automatic warning device

Details Dipstick with automatic warning device Dipstick with automatic warning device

1988-11-07

1990-03-20

Orsino, Joseph A.

Communications: electrical

Land vehicle alarms or indicators

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

3404503, G08G 2300

Patent

active

049104950

ABSTRACT:
A dipstick with automatic warning device consisting of a tube positioned in a dipstick housing of an oil pan, indicia disposed on the tube indicating ADD and FILL of the oil pan, sets of elecrical contacts disposed internally of the tube, one set proximate the ADD indicia and one set proximate the FULL indicia. A plastic cap located below the ADD indicia and having a bore therethrough for passage of oil from the oil pan cap internal of lower end of the tube. A conductive float ball within the tube to bridge respective sets of electrical contacts. An iron element in the float ball rendering a magnetic sensitive component thereof, a magnet disposed in the cap providing magnetic force to assure contac of the float ball and the set of contacts proximate the ADD indicia when level of oil is sufficiently low, an upper cap closing off the upper end of the tube, a 4-wire phone jack disposed in the upper cap for coupling with a 4-wire phone plug, and a communications member for coupling the respective ones of the sets of electrical contacts to respective ones of terminals of the 4-wire phone jack.

REFERENCES:
patent: 1768446 (1930-06-01), Gron
patent: 2661411 (1953-12-01), Berger
patent: 2780692 (1957-02-01), Hinojosa
patent: 2855582 (1958-10-01), Tweedale
patent: 3728704 (1973-04-01), Moore
patent: 4386337 (1953-05-01), Todd
patent: 4721941 (1988-01-01), Robine, Jr. et al.

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