Device for visually checking the degree of clogging of an air fi

Details Device for visually checking the degree of clogging of an air fi Device for visually checking the degree of clogging of an air fi

1987-04-06

1988-10-25

Levy, Stewart J.

Measuring and testing

Simulating operating condition

Marine

55274, G01M 1900

Patent

active

047794569

ABSTRACT:
The device for visually checking the degree of clogging of an air filter in motor vehicle engines according to the invention comprises a tubular duct closed at one end and provided with a wall of filter material communicating with an outlet pipe connectable to the engine combustion air intake manifold downstream of the filter, in the side walls of the tubular duct there being provided at least one transparent region opposite the filter material wall and arranged to allow the surface of the filter material wall to be viewed, the tubular duct being in communication with the external environmental from which the air is drawn.

REFERENCES:
patent: 2655894 (1953-10-01), Rabbitt
patent: 3060527 (1962-12-01), Sten
patent: 3246624 (1966-04-01), Lowther
patent: 3591945 (1971-07-01), Eisel
patent: 4162660 (1979-07-01), Albertson et al.
patent: 4509613 (1985-04-01), Yamaguchi
patent: 4548166 (1985-10-01), Gest
patent: 4561395 (1985-12-01), McMullen

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