Seal for a rolling bearing with a rotatable outer race
US5133609A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1991 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Apr 29, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C19/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A resilient seal for a rolling bearing having an outer peripheral edge secured in a circumferential groove of an outer race and an inner peripheral end directed toward the outer periphery of a groove of an inner race. The seal is reinforced by a circular reinforcing core and includes a center lip and an inner lip both at the inner peripheral end thereof. The center lip extends radially inwardly from a thick rigid portion of the seal formed adjacent to the inner end of the circular reinforcing core to always contact the side outer wall of the groove of the inner race irrespective of the axial relative movement between the inner and outer races. The inner lip is thin and extends toward and below the top of the side inner wall of the groove of the inner race to form a labyrinth clearance therebetween. When the outer race is rotated at high speed, the inner lip is moved to decrease the labyrinth clearance by a centrifugal force in proportion to the rotational speed of the outer race.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.