Boots – shoes – and leggings
Patent
1989-07-20
1991-10-22
Dixon, Joseph L.
Boots, shoes, and leggings
3404507, 340449, 73 64, G01D 100, G06F 1520
Patent
active
050601563
ABSTRACT:
Engine lubricating oil temperature and the amount of engine usage are used to calculate when engine lubricating oil has reached the end of its predicted wear life. Each spark (engine speed) pulse is multiplied by weighting factors that are periodically determined by sampling the engine oil temperature and the length of time the engine has been in continuous use above a predetermined speed. When the value of the accumulated weighted spark pulses has reached a predetermined level, a warning signal is provided to indicate the necessity of changing the engine lubricating oil.
REFERENCES:
patent: 3526127 (1970-09-01), Sarkis
patent: 3593012 (1971-07-01), Lang
patent: 4258421 (1981-03-01), Juhasz et al.
patent: 4277772 (1981-07-01), Kastura et al.
patent: 4497200 (1985-02-01), Tournier
patent: 4506337 (1985-03-01), Yasuhara
patent: 4525782 (1985-06-01), Wohlfarth et al.
patent: 4533900 (1985-08-01), Muhlberger et al.
patent: 4677847 (1987-07-01), Sawatari et al.
patent: 4694793 (1987-09-01), Kawakita et al.
patent: 4706193 (1987-11-01), Imajo et al.
patent: 4733556 (1988-03-01), Meitzler et al.
patent: 4741200 (1988-05-01), Hammerle
patent: 4742476 (1988-05-01), Schwartz et al.
patent: 4785287 (1988-11-01), Honma et al.
patent: 4796204 (1989-01-01), Inoue
patent: 4845623 (1989-07-01), Korb
patent: 4847768 (1989-07-01), Schwartz et al.
patent: 4862393 (1989-08-01), Reid et al.
patent: 4884054 (1989-11-01), Moon, Sr.
patent: 4970492 (1990-11-01), King
Attard Joe C.
Date Parshuram G.
Heitzeg Roger S.
McNamara David A.
Misangyi Peter W.
Dixon Joseph L.
Ford Motor Company
Godwin Jr. Paul K.
Sadler Clifford L.
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