Methods and apparatus for mixing and dispensing multi-part compositions
AssigneeUltradent Products, Inc.
InventorDan E. Fischer
Life of this patent
Estimating the term…
Abstract
Methods and apparatus are provided for mixing and dispensing multi-component compositions. The preferred embodiment utilizes a syringe barrel as a mixing chamber and for dispensing of the mixed components. A mixer element, preferable including a paddle member and finger grip means for rotating the paddle member, is provided for insertion into the syringe barrel to effect the desired mixing. A scraper element is used to scrape mixed components from the mixer element so as to retain the mixed components within the syringe barrel upon removal of the paddle member after mixing is completed. Mixing is preferably performed with the multiple components placed in side-by-side orientation within the syringe barrel rather than one on top of another.
Claims20
A system for mixing and dispensing multi-component compositions, said system comprising;
- a syringe barrel for receiving multiple components to be mixed;
- mixing means for mixing said components within the syringe barrel, said mixing means including
- an elongate paddle member for insertion into said syringe barrel and
- means for rotating said paddle member within the syringe barrel so as to effect mixing of components contained therein;
- scraper means for removing said components from the surface of the paddle member so as to retain the components within the syringe barrel upon removal of the paddle member after mixing is completed.
A system for mixing and dispensing multi-component compositions, said system comprising;
- a syringe barrel for receiving multiple components to be mixed;
- mixing means for mixing said components within the syringe barrel, said mixing means including
- an elongate paddle member for insertion into said syringe barrel,
- said paddle member being provided with means for effecting turbulence in order to assist in mixing components within the syringe barrel, and
- means for rotating said paddle member within the syringe barrel so as to effect mixing of components contained therein;
- scraper means for removing said components from the surface of the paddle member so as to retain the components within the syringe barrel upon removal of the paddle member after mixing is completed.
A system for mixing and dispensing multi-component compositions, said system comprising;
- a syringe barrel for receiving multiple components to be mixed, said syringe barrel being provided with an elongated hole on the side of the syringe barrel extending from the interior to the exterior thereof for exhausting air from said syringe barrel upon insertion of a plunger element into said syringe barrel for use in dispensing material contained therein,
- mixing means for mixing said components within the syringe barrel, said mixing means including
- an elongate paddle member for insertion into said syringe barrel,
- said paddle member being provided with means for effecting turbulence in order to assist in mixing components within the syringe barrel, and
- means for rotating said paddle member within the syringe barrel so as to effect mixing of components contained therein;
- a scraper element for removing said components from the surface of the paddle member so as to retain the components within the syringe barrel upon removal of the paddle member after mixing is completed, said scraper element having two projecting fingers for insertion through the elongated hole in the syringe barrel and to positions on opposite sides of the mixing element, thereby serving to scrape material from the mixing element as said mixing element is removed.
A method for mixing multi-component compositions, comprising the steps of;
- placing components to be mixed in side-by-side orientation into a syringe barrel;
- placing a paddle element into the syringe barrel;
- rotating said paddle element in order to effect mixing of said components;
- and
- utilizing scraper means to remove said components from the surface of the paddle member so as to retain the components within the syringe barrel upon removal of the paddle member after mixing is complete.
Dependencies are inferred from the claim text.