Dental turbine support structure
US6790039B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2003 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Jun 2, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2316/13
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A support structure for a turbine motor for use in a dental handpiece includes a pair of resilient rings to capture and limit rotation of an outer race of a bearing supporting a rotor of the turbine motor. The turbine motor is supported by first and second bearing assemblies, the first bearing assembly being proximate a dental tool and the second bearing assembly being distal the dental tool. The pair of rings are preferably located on the first bearing assembly, but optionally could be located on only the second bearing assembly or on both first and second bearing assemblies. The support structure further includes a resilient spacer ring located on the second bearing assembly to provide axial pre-load to the bearing assemblies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.