Mouthpiece and method for producing the same
US4920984A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1987 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Oct 15, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B71/085
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A mouthpiece comprising an ethylene-vinyl acetate copolymer having a vinyl acetate content of from 12 to 33 wt %, and the process for producing the same comprising the steps of: PA1 preparing a thermoplastic elastic sheet material formed to be increased in thickness from one end to the other end; PA1 preparing a teeth impression cast of a user who is going to use a mouthpiece to be produced; and PA1 pressing said teeth impression cast against said thermoplastic elastic sheet material in a softened state so as to transfer a shape of said teeth of said user onto said thermoplastic elastic sheet material to thereby obtain a mouthpiece which is set to be thicker at a portion corresponding to a front teeth position than at a portion corresponding to a molar teeth position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.