Roller assembly apparatus and method of use
US6860838B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2002 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Sep 18, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2316/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention relates in general to roller assembly apparatuses, and specifically to roller assembly apparatuses used in treadmills. An embodiment of the invention includes a roller apparatus, comprising: a shaft with raised surfaces on each end, a rotatable tube disposed around a portion of the shaft, and bearing assemblies. The bearing assemblies are disposed between the raised surfaces of the shaft and the rotatable tube such that the inner surfaces of the bearing assemblies contact the raised surfaces which allows the inner surfaces of the bearing assemblies to rotate on the raised surfaces, thus eliminating forces on the inner surfaces of the bearing assemblies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.