Unit dose low viscosity material dispensing system
US6328715A · kind A · utility
Inventors
Key dates
| Filing date | Sep 21, 1999 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Sep 21, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C17/01
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
An ampule having a body portion and a sealed end portion and a sealed delivery portion adapted for use in a delivery syringe system for controllably dispensing a low viscosity material, such as a liquid, gel, or paste. An ampule having sealed rear portions adapted to mate with a plunger of a syringe so as to facilitate controlled dispensing of a low viscosity material. The syringe has a plunger adapted to grasp the collapsed ampule, facilitating removal, as well as breach openings positioned to provide controlled initial flow of the dispensed low viscosity material. In one embodiment, a barrel having different internal diameters is used to improve dispensing of material within an ampule. Low viscosity materials such as liquids and gels are controllably dispensed in a measured unit dose quantity. The present invention has many applications, but is particularly applicable to dispensing low viscosity materials such as used in coatings and not injected parenterally, and is particularly applicable to dental applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.