Bi-rotational thrust bearing for a turbocharger
US9574458B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2016 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Apr 4, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A thrust bearing for a turbocharger includes a bearing body having a bearing surface extending parallel to a collar of a rotating shaft. The bearing body defines a central bore through which the rotating shaft extends. The thrust bearing includes tapered lands formed in the bearing surface at spaced arcuate locations extending radially outward of the second bore. Each tapered land includes a first ramp extending from within the bearing body to the bearing surface along a gradient, a flat extending from the first ramp along the bearing surface, and a second ramp extending from the flat into the bearing body along the gradient. Rotation of the shaft and the collar in either direction equally pressurizes a working fluid between the collar and the bearing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.