Caterpillar Tractor Co.

Albert W Crumrine

Lawrence F Fratzke

Raymond M Vanderburg

James M Kostas

Theodore H Fones

An improved fan construction for use with engines utilizing circulating coolant and radiators, including a shaft adapted to be mounted on an engine or the like, a sheave journalled on the shaft, and fan blades carried by the sheave and rotatable therewith. An annular ring of resilient material is disposed about the fan blades and has an inner diameter spaced slightly radially outwardly of the tips of the fan blades and an outer periphery adapted to slidably, peripherally, sealingly engage a radiator shroud or the like about the periphery of an orifice therein and a perforate support for the ring secured to both the ring and the shaft.

Fan shroud

A filter assembly comprises a base having a cartridge-type filter and an impervious case mounted thereon. An open end of the case is disposed in an annular recess defined in the base. An annular sealing means is disposed within the recess and is compressed in sealing relationship therein by the case. The sealing means comprises an annular metallic insert having a U-shaped cross section and an annular elastomeric member molded as an integral part thereof. Outer sealing portions of the elastomeric member are compressed into sealing contact with top and sidewalls defining the recess and the case is automatically self-centered within sidewalls of the insert.

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Peoria, IL, United States of America

Albert W Crumrine