The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2003
Filed:
May. 11, 2001
William B. Dragan, Easton, CT (US);
Gordon Rowe, Wallingford, CT (US);
Centrix, Inc., Shelton, CT (US);
Abstract
A syringe having a breech and a slot adjacent an ampule chamber adapted to receive the body and nozzle of a collapsible ampule. A syringe includes a forward ampule chamber having a predetermined longitudinal length for dispensing a relatively low viscosity material. A closed ampule containing a relatively low viscous material is collapsible and is easily positioned and held within the syringe during dispensing. The nozzle slot permits easy insertion of the flexible collapsible ampule and removal once the ampule is collapsed. In one embodiment, a syringe barrel has flexible fingers used in combination with a plunger having a reduced diameter intermediate portion for preventing the plunger from falling out of the barrel. Low viscosity materials in a unit dose collapsible ampule are controllably and conveniently dispensed for use in many different applications. The present invention is particularly suitable for dispensing dental materials.