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:
Oct. 29, 2002
Filed:
Feb. 28, 2000
James Drago, Fairport, NY (US);
Joel R. Shaw, Fairport, NY (US);
Jeffrey M. Grudzien, Fairport, NY (US);
Garlock Sealing Technologies LLC, Palmyra, NY (US);
Abstract
A grease purgeable dynamic labyrinth sealing device is disclosed which includes a stator having an annular engagement flange on a radially inner portion thereof and a rotor having an annular engagement flange on a radially outer portion thereof. The stator annular engagement flange and the rotor annular engagement flange have coacting means for mechanically interlocking the stator and the rotor. In one embodiment, means, such as, for example, a plurality of apertures, are operatively formed in the stator for allowing excess grease applied to the bearing housing to move through the stator and out of the stator such that the grease purgeable dynamic labyrinth sealing device maintains proper position relative to the bearing housing and is rotatable with the shaft. In another embodiment, means, operatively formed on the rotor, are provided for reducing the size of the contacting surface area between the stator and the rotor such as, for example, an annular ring or protrusion formed on the surface of the rotor which contacts the stator or vice versa. In yet another embodiment, means are operatively formed on the stator, for increasing the resistance of the stator to move away from the bearing housing when excess grease exits the bearing housing between the bearing housing and the stator, such as, for example, relatively more shallow portions of the O-ring grooves formed in the stator that allow the O-rings to compress when the stator is moved away from the bearing housing.