Engine protective device responsive to low oil pressure

Details Engine protective device responsive to low oil pressure Engine protective device responsive to low oil pressure

1981-08-25

1983-08-23

Lazarus, Ira S.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123198D, 123196S, F02B 7708

Patent

active

043997856

ABSTRACT:
An engine protective device that is responsive to low oil pressure to cut off or limit fuel flow to avoid or minimize the chance of engine damage. A spring-biased elongate main valve member includes an axial bore and an override spring-biased ball valve to selectively allow fuel flow through said axial bore. A remote override function is realized by use of a bypass valve controlled by a pneumatic or electrical switch. An override lock prevents a mechanical, local (i.e., not remote) override from being changed from an override position back to a normal or off position in the event of insufficient oil pressure.

REFERENCES:
patent: 3148671 (1964-09-01), Bottorff et al.
patent: 3153403 (1964-10-01), Dobbs
patent: 3202143 (1965-08-01), Goodwin
patent: 3202161 (1965-08-01), Richards
patent: 3492983 (1970-02-01), Vipperman
patent: 3523521 (1970-08-01), Goodwin
patent: 3533390 (1970-10-01), Goodwin
patent: 3590798 (1971-07-01), Goodwin
patent: 3626920 (1971-12-01), Maher
patent: 3877455 (1970-10-01), Goodwin
patent: 4067348 (1978-01-01), Davis
patent: 4080946 (1978-03-01), Cunningham
patent: 4106468 (1978-08-01), Davis
patent: 4117822 (1978-10-01), Mills
patent: 4202513 (1980-05-01), Bilbrey et al.
patent: 4329954 (1982-05-01), Dobbs
patent: 4338896 (1982-07-01), Papasideris

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