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:
Jul. 23, 1996
Filed:
Feb. 22, 1995
Jonathan S Hager, Chandler, AZ (US);
Kellan P Geck, Chandler, AZ (US);
William L Giesler, Phoenix, AZ (US);
Gary A Farnsworth, Mesa, AZ (US);
AlliedSignal Inc., Morris Township, NJ (US);
Abstract
An improved oil seal is provided for sealing passage of rotatable shaft through an end wall of a bearing housing in a turbomachine or the like, wherein the shaft is rotatably supported within the bearing housing by oil-lubricated bearings. The improved oil seal comprises a slinger rotor mounted on the shaft for rotation therewith. The slinger rotor includes a radially outwardly extending slinger ring with radially open slinger ports formed therein, in combination with an axially projecting centrifuge sleeve defining an internal tapered centrifuge surface disposed in close running clearance with an axially projecting cylindrical wall segment on the end wall. During shaft rotation, the centrifuge surface pumps oil in a direction away from the end wall to the slinger ring for discharge through the slinger ports to the interior of the bearing housing. In addition, in the preferred form, the slinger rotor has an internal bore with axially extending lands for press-fit mounting onto the rotating shaft, wherein the lands are separated by ramped slots defining additional tapered centrifuge surfaces for pumping oil away from the end wall of the bearing housing.