Automobile and truck carburator air intake filters

Claim 1

An air intake annular pleated filter element in combination with an anti-pollution warning device comprising a calibrated vacuum sensing air whistle cavity resonator compression flange haveing an aperture therethrough having an annular seat at the air inlet within the aperture, inserted and supported across the aperture a dust protective screen and O-ring seated on the inner annular seat into the aperture having inserted and press fitted a calibrated vacuum sensing air whistle cavity resonator having no moveing parts which is supported across the aperture and seated on the O-ring within the aperture supported across the aperture a flexible dust protective cover, having an aperture within the filtering paper within a pleat into which the collar of the warning resonator compression flange device is inserted into the aperture within the filtering paper within a pleat, the filtering paper is positioned and seated on the flange of the device slipping over the collar of the device a self seating external ring secureing the device to the papering paper and aperture within a pleat having the suction of air through the aperture within the filtering paper and through the aperture within the device and through the orifice of the calibrated vacuum sensing air whistle cavity resonator forceing out the flexible dust protective cover activating the calibrated vacuum sensing air whistle cavity resonator producing a whistleing warning sound indicating a clogged air filter element.