Multiple compartment storage and dispensing apparatus

Details Multiple compartment storage and dispensing apparatus Multiple compartment storage and dispensing apparatus

2004-04-15

2008-12-02

Walczak, David J. (Department: 3751)

Coating implements with material supply

Including rupturable means or sealed-cartridge receiver

C401S205000, C401S040000

Reexamination Certificate

active

07458741

ABSTRACT:
A storage and dispensing apparatus designed to contain pre-measured amounts of a substance(s). The apparatus comprises at least one compartment, preferably at least two compartments, for storing the substance(s) that is partially enclosed by a frangible seal, an applicator or dispensing conduit, and an expandable chamber designed to accept and dissipate the hydraulic force created when pressure is applied to the at least one compartment rupturing the frangible seal, and expelling the substance(s) into the chamber. The applicator is attached to the chamber with an applicator bond area. The expandability of the chamber is conferred by expandability of the chamber walls and of the applicator, when present, and is varied in different embodiments by altering the ratio between the area of the applicator bond area and the area of the applicator. The frangible seal, in one of many embodiments, may be a chevron shape stress riser with a point of inflection oriented towards the compartment. A removable cap may cover the applicator or dispensing conduit.

REFERENCES:
patent: 4812067 (1989-03-01), Brown et al.
patent: 5242433 (1993-09-01), Smith et al.
patent: 5558874 (1996-09-01), Haber et al.
patent: 6547468 (2003-04-01), Gruenbacher et al.

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