US 12,281,707 B2
Sealing device for pillow blocks
Randall Jaskot, Dousman, WI (US); and Todd Brickson, St. Charles, MO (US)
Assigned to ORION ENGINEERED SEALS, LLC, Cincinnati, OH (US)
Filed by ORION ENGINEERED SEALS, LLC, Cincinnati, OH (US)
Filed on Jun. 24, 2022, as Appl. No. 17/808,638.
Application 17/808,638 is a continuation of application No. 16/456,827, filed on Jun. 28, 2019, granted, now 11,371,560.
Claims priority of provisional application 62/691,020, filed on Jun. 28, 2018.
Prior Publication US 2022/0333647 A1, Oct. 20, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F16J 15/44 (2006.01); F16J 15/447 (2006.01); F16C 33/74 (2006.01); F16C 35/02 (2006.01)
CPC F16J 15/447 (2013.01) [F16J 15/44 (2013.01); F16C 33/74 (2013.01); F16C 35/02 (2013.01); F16C 2360/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pillow block bearing seal configured for mounting into a shaft opening in a wall of a bearing housing, defined by a pair of axially-spaced annular ribs separated by a groove, and for sealing the shaft opening around the shaft, the bearing seal comprising:
(a) a stator assembly including: a cylindrical base having an axial length and an outer surface consisting of a cylindrical outer surface, and configured to accept the shaft passing there through; and a stator extending annularly from a first axial end of the cylindrical base, the stator including an axially outward-facing surface;
(b) a rotor configured to attach to and rotate with a rotatable shaft, the rotor having an axially inward-facing surface that confronts the axially outward-facing surface of the stator to define labyrinth interface passage; and
(c) a resilient cylindrical sleeve having an axial length from a first end to a second end, and an outer surface consisting of a cylindrical outer surface extending from the first end to the second end, and an inner surface fixed to the cylindrical outer surface of the cylindrical base, that contacts with the pair of annular ribs of the bearing housing, for stabilizing the alignment of the center line of the shaft with the bearing housing.