Pin construction for two-piece model and system
US7278851B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2005 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Oct 26, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C11/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A model and die system includes a working quadrant having an upper flat surface. Pin-receiving tapered bores are formed in the upper flat surface and a thin metallic foil covers the bores. Cast teeth are supported by the working quadrant and each cast tooth has at least one tapered pin depending from it. Each pin includes a tapered main body that matches the taper of the tapered bore, a reduced diameter section of the same taper that accommodates torn or ruptured foil, an annular ramp section that sharply crimps the foil about the entry of the tapered bore, and a tapered rim that matches the taper of the tapered bore to lock the pin into its fully seated position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.