Bearing ball cage and method of making the same
US8317404B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2008 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Mar 13, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49691
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A cage for a ball bearing assembly has a pocket for accommodating one of the balls defined at a plurality of locations in a direction circumferentially thereof and each of the pockets has an inner surface so shaped as to represent a concaved spherical surface. A concaved portion extending from an open edge on the cage inner diametric side towards the cage outer diametric side is provided in an inner surface of each of the pockets. The sectional shape of the inner surface of this concaved portion in a cage circumferential direction is represented by an arcuate shape of a radius of curvature smaller than the radius of curvature of the concaved spherical surface defining the inner surface of the respective pocket. The inner surface of each of the pockets may be formed with a film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.