Extracoronal, activatable precision attachment
US4973249A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1988 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Jul 5, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C13/2653
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An extracoronal precise attachment comprising a male component, which is to be secured to the natural tooth or implant, and a female component, which is securable thereto and is to be connected to the tooth substitute. The female component has a plastic insert which is formed from a friction member, which encloses a portion of the male component, and a securing member, which connects thereto and is inserted in the female component. To adjust the friction between the male and female components, that is to say to activate the female component, the latter has a bore which traverses therethrough and through the securing member of the plastics insert, a screw being screwable into the bore and having a threaded pin portion and a threadless cylindrical portion, the head of the screw being supported on the female component in such a manner that, when the screw is being rotated in position, a pressure is exerted upon the plastics insert. This arrangement permits the friction to be very easily and accurately adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.