US 12,222,003 B2
Bearing seal with polytetrafluoroethylene thrust bumper
Xin Yu, Vancouver, WA (US)
Assigned to Consolidated Metco, Inc., Vancouver, WA (US)
Filed by Consolidated Metco, Inc., Vancouver, WA (US)
Filed on Aug. 29, 2023, as Appl. No. 18/239,707.
Application 18/239,707 is a continuation of application No. 16/378,173, filed on Apr. 8, 2019, granted, now 11,835,090.
Claims priority of provisional application 62/738,979, filed on Sep. 28, 2018.
Prior Publication US 2023/0417284 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F16C 33/20 (2006.01)
CPC F16C 33/201 (2013.01) [F16C 2326/02 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A bearing seal, comprising:
a seal case;
a sleeve; and
a thrust bumper disposed between the seal case and the sleeve, the thrust bumper having an initial axial thickness that defines a spacing between the seal case and the sleeve when the seal case and the sleeve are compressed together during assembly of the bearing seal, the thrust bumper having a modified axial thickness less than the initial axial thickness after a break-in phase of the bearing seal, the thrust bumper being composed of a material that is at least 90% polytetrafluoroethylene by weight.