Dispensing system with inflatable bag propelling mechanism and separate product gas phase

• US 4,679,706 A
• Filed: 10/29/1984
• Issued: 07/14/1987
• Est. Priority Date: 10/29/1984
• Status: Expired due to Fees

• Current Assignee: CCL Technologies Incorporated
• Original Assignee: Enviro-Spray Systems Incorporated
• Inventors: Kalriess, William, Svitila, Barbara, Magid, David J.
• Primary Examiner(s): Skaggs, H. Grant
• Application Number:
  US06/666,202
• Time in Patent Office: 988 Days
• Field of Search: 222/394, 222/399, 222/402.1, 222/130, 222/386.5, 222/402.18, 60/673, 60/721
• US Class Current: 222/130
• CPC Class Codes: B65D 83/625 the propellant being generated by a chemical or electrochemical reaction for pressure gas in portable fire extinguishers A62C13/02

Abstract

A dispensing system for use with a wide variety of dispensable products which employs an inflatable pouch positioned within the container containing a pressurizing gas phase. A product gas phase is incorporated in the expelled product to enhance the product appearance, functionally or safety. The weight to weight (w/w) ratio of the product gas phase to the flowable materials should be between about 0.001:1 to about 0.015:1 and preferably, the w/w ratio of the product gas phase to the flowable material is between about 0.001:1 and about 0.07:1.

Claims

1. An apparatus for developing an internal pressure within a dispensing system adapted to dispense a flowable product and for introducing a gas into the product to be dispensed which comprises:

an inflatable bag with at least two chambers being substantially impervious to the flowable product to be dispensed which includes a pressurizing gas phase chamber and an integral product gas phase chamber separate and isolated therefrom, said pressurizing gas phase chamber including therein gas generating components which upon admixing generate gas and increase the number of moles of gas present in said pressurizing gas phase, said gas pressurizing phase chamber walls being non-gas permable, said product gas phase chamber including therein gas generating components which upon admixing generate gas and increase the number of moles present in said product gas phase, and

means for transferring said product gas phase from said separate compartment into the flowable product to be dispensed from the dispensing system.

2. An apparatus products according to claim 1 wherein said flowable product is admixed with said product gas phase at a weight to weight ratio of said product gas phase to flowable material between approximately 0.001:

1 to about 0.15;

1.

3. An apparatus products according to claim 1 wherein said weight to weight ratio of said product gas phase to flowable material is between about 0.001:

1 and about 0.07;

1.

4. An apparatus products according to claim 1 wherein said product gas phase is dispersed in said flowable product in a substantially fully saturating amount with respect to said fluid product.

5. An apparatus according to claim 1 wherein said transferring means comprises conduit means having one end thereof disposed in said product gas phase chamber of said inflatable bag and the other end thereof adapted to be coupled to a valve means provided in the dispensing system whereby upon activation of said valve means said flowable product flows into said valve means where it mixes with said product gas phase delivered from said product gas phase chamber.

6. An apparatus according to claim 1 wherein said transferring means comprises a gas permeable wall forming the outward side of said product gas phase chamber to facilitate the introduction of the product gas phase within said product gas phase chamber into the flowable product to be dispensed.

7. An apparatus according to claim 6 wherein said gas permeable wall comprises a low density polyethylene material of approximately one and one-half mils in thickness.

8. A dispensing system for discharging a substantially even textured flowable product therefrom under substantially uniform pressure comprising:

(a) a dispensing container;

(b) valve means sealably attached to said dispensing container;

(c) a flowable product disposed within said dispensing container;

(d) an inflatable bag substantially impervious to said flowable product which includes an isolated non-gas permeable chamber containing a pressurizing gas phase generated by gas generating components which upon admixing in the chamber generate gas and increase the number of moles of gas present in said pressurizing gas phase, said inflatable bag being disposed within said fluid product;

(e) a product gas phase disposed within said dispensing container adapted to be dispensed along with said flowable product under a substantially uniform pressure and with a substantially even texture wherein said product gas phase is a gas disposed in a separate chamber of said inflatable bag, said separate chamber including therein gas generating components which upon admixing generate gas and increase the number of moles present in said product gas phase, and wherein said dispensing system further includes means for transferring said product gas phase gas from said separate chamber into said flowable product disposed within said dispensing container; and

(f) said transferring means comprises conduit means having one end thereof disposed in said separate chamber of said inflatable bag and the other end thereof coupled to said valve means whereby upon activation of said valve means said flowable product flows into said valve means where it mixes with said product gas phase gas from said separate chamber.