Method for overmolding polymers over dental tools
US7226289B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 2004 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Feb 22, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C5/42
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for overmolding a plurality of polymers having different properties onto a dental instrument. The method involves providing a dental instrument substrate made of metal, overmolding a first polymer onto a portion of the dental instrument substrate, and then applying a second polymer over a portion of the first polymer. The first polymer, which is advantageously rigid, is overmolded so that an exposed outer surface of the first polymer corresponds to a portion of the dental instrument to be gripped within a collet of a dental hand piece for powered use. The second polymer, which is advantageously soft and flexible, is applied so that an exposed outer surface of the second polymer corresponds to a portion of the dental instrument to be gripped by a dental practitioner for manual use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.