Rotational coupling device with bearing shield
US12203519B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2024 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Mar 12, 2044 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2300/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rotational coupling includes a hub assembly configured for rotation about a rotational axis. The hub assembly includes a hub disposed about the axis and configured to receive a shaft and a disc extending radially outwardly from the hub. An armature and electromagnet are disposed on opposite axial sides of the disc. The electromagnet is fixed against rotation. A bearing is disposed between the hub and the electromagnet. The hub assembly and electromagnet are separated by an air gap on an outboard side of the bearing. A debris shield is axially aligned with, and extends across the radial length of, the air gap and, in some embodiments, is at least partially disposed within the air gap. The shield has a fixed end coupled to one of the hub assembly and electromagnet during assembly and a free end configured to engage the other through a spring force and/or electromagnetic attraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.