The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 1993
Filed:
Sep. 03, 1991
Jim K Carroll, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
The present rotating fan and shroud assembly reduces noise emitted therefrom and increases cooling system efficiency. The rotating fan and shroud assembly when combined with the labyrinth-type seal also improves serviceability and reduces maintenance time and cost. The positioning a the first end of an inlet bell-mouth portion of the shroud assembly between a pair of flexible members allows the assembly to be easily removed for servicing while preventing recirculation of the cooling air. A radially outward extension of the inlet bell-mouth portion, and the positioning of a second end of the inlet bell-mouth portion and its juncture with an intermediate portion in line with a leading edge of each of a plurality of blades provides a uniform contour for the flow of the cooling air as it enters into the plurality of blades. A radially outward extension of an outlet bell-mouth portion 76 extending axially beyond a trailing edge of the blades, and the positioning of a first end of the outlet bell-mouth portion and its juncture with the intermediate portion being substantially centered on the width of each of the plurality of blades further enhances the flow of the cooling air from each of the blades increase efficiency.