Air filter restriction indicating device

Details Air filter restriction indicating device Air filter restriction indicating device

1981-02-09

1983-01-25

Yasich, Daniel M.

Signals and indicators

Indicators

Fluid flow

55274, 73709, 116294, B01D 4600, G01L 1912

Patent

active

043697283

ABSTRACT:
An improved air filter restriction indicating device is disclosed for use in connection with an internal combustion engine intake air filtration system. The improvement resides in a novel structure for resetting the indicating device which permits the indicating device to be reliably used in cold, wet environments and in particularly dirty, dusty environments.

REFERENCES:
patent: 1546409 (1925-07-01), Schmidt
patent: 1600825 (1926-09-01), Kraft
patent: 3066527 (1962-12-01), Stein
patent: 3068831 (1962-12-01), Witchell
patent: 3246624 (1966-04-01), Lowther
patent: 3247824 (1966-04-01), Rodgers
patent: 3443365 (1969-05-01), Lee et al.
patent: 3465707 (1969-09-01), Kashiwaba
patent: 3779080 (1973-12-01), Smith
patent: 3939457 (1976-02-01), Nelson
patent: 4033733 (1977-07-01), Nelson
patent: 4100878 (1978-07-01), Leinfelt

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