Dental syringe tip and adaptor
US5192206A · kind A · utility
Inventors
Key dates
| Filing date | Oct 11, 1990 |
| Grant date | Mar 9, 1993 |
| Priority date | — |
| Expiry date | Oct 11, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/0202
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Various adaptors are used for securing a replaceable syringe tip in operative relationship to a handpiece body. The syringe tip is mounted on a tapered male connector set in the hollow interior of the adaptor. O ring seals and a metal flange member are used to prevent the leakage of air or water passing from the handpiece into the interior of the adaptor and then into the syringe tip. A captivated thumb nut is utilized to prevent the thumb nut from accidently disengaging completely from the adaptor. When the thumb nut is loosened to replace a syringe tip, the thumb nut will remain captivated on the adapter, only loosening enough to allow removal and insertion of a syringe tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.