Liquid release device
AssigneeSustained Release Technologies Inc
InventorsJohn Scott Wheeler, George Georgiades
Life of this patent
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Abstract
A hollow container is combined with a burstable envelope retaining a liquid agent. The container is designed to allow a user to open the envelope by bursting or likewise rupturing the envelope while it remains in the container. The design of the envelope provides a predictable bursting location and a lower bursting pressure of the envelope to provide a more controlled release of liquid agent. Bursting forces may be applied in any of a variety of ways just as by twisting or crushing. The design allows for desired use of beneficial envelope materials such as polyester films that are otherwise difficult to rupture.
Claims1
A liquid release device comprising:
- a container having a first and a second mating portions defining a cavity;
- a flexible envelope and a volume of liquid agent contained in the envelope, the envelope having a weakened portion configured to be the point of bursting upon application of force to the envelope;
- at least one of the mating portions includes a receptacle retaining the envelope within the cavity;
- the mating portions moveable relatively and configured such that relative movement will deform the envelope to cause the envelope to burst at the weakened portion;
- wherein the envelope has a first and a second tab, the first tab retained by the first mating portion and the second tab retained by the second mating portion;
- the container configured to allow relative rotation of the two mating portions and wherein:
- the weakened portion comprises a slit located between the first tab and second tab.
Dependencies are inferred from the claim text.