Dental syringe with finger actuated tip retainer assembly
US5125835A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1991 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | Jun 25, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/0202
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental syringe is disclosed having a head and attached handle. Finger actuated valves in the head control water and air flows to a syringe tip having concentric conduits. A tip retainer assembly includes a holder having a socket to insertably receive the syringe tip. A lock collar, slidably carried by said holder, has a conical surface which acts on ball elements in the holder to urge them into locking engagement with a grooved, inserted portion of the syringe tip. A spring automatically positions the collar to the locking position with movement of the collar in an opposite direction to a tip unlocking position by fingertip pressure applied to the collar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.