Multi-cavity dispensing refill cartridge
AssigneeChesebrough-Pond's USA Co., Division of Conopco, Inc.
InventorJames L. Gentile
Life of this patent
Estimating the term…
Abstract
A multi-cavity dispensing refill cartridge to be used with a reusable base. The refill cartridge has two hollow, separate parallel cylinders for containing flowable material. The cylinders have a first generally closed end and a second end which accommodates piston heads. The piston heads are compressably engageable with piston rods of the reusable base. Relative compression of the piston heads and cylinders cause flowable material to flow toward the first end of the cylinders and towards the outlet in the closed end. The outlet include means for causing the flowable materials to flow toward each other at the outlet opening. The refill cartridge is provides with means for selectively, engaging the reusable base.
Claims13
A multi-cavity dispensing refill cartridge, for use with a reusable base unit, for the coextrusion of at least two flowable materials, comprising:
- a dispensing cartridge comprising at least two hollow and separate parallel cylinders, each cylinder for containing one of said flowable materials, said cylinders having a first generally closed end and a second open end telescopically and slidingly accommodating at least two parallel piston heads which conform to ride sealingly along the interior walls of said cylinders so as to force said flowable materials to flow toward said first end of said cylinders upon relative compression of said cylinders and piston heads, said piston heads each having a hollow interior containing a cylindrical central portion and interior ribs connecting said cylindrical central portion to the outer wall of said piston head, wherein said cylindrical central portion extends beyond said ribs toward said open end of said cylinder whereby a hollow cylindrical piston rod in a reusable base unit can be received around said cylindrical central portion and bear axially against said ribs to push said piston head toward said closed end, said cylinders having outlet channels at said closed end, said refill cartridge further comprising means for selectively engaging a reusable base unit;
- and
- an outlet means in fluid communication with said outlet channels, said outlet means including adjacent outlet openings unconnected to each other and having means for causing said flowable material to flow toward each other at said outlet openings to form a single banded, unmixed stream of said materials outside of said outlet means.
Dependencies are inferred from the claim text.