Apparatus and method for controllably delivering fluid to a second fluid stream

• US 6,220,267 B1
• Filed: 01/27/1999
• Issued: 04/24/2001
• Est. Priority Date: 01/27/1999
• Status: Expired due to Fees

• Current Assignee: Microlin LLC
• Original Assignee: Ceramatec, Inc.
• Inventors: Joshi, Ashok V.
• Primary Examiner(s): Hepperle, Stephen M.
• Application Number:
  US09/238,334
• Time in Patent Office: 818 Days
• Field of Search: 137/88, 137/9, 137/101.11, 137/101.19, 137/92, 137/93
• US Class Current: 137/9
• CPC Class Codes: G05D 11/02 Controlling ratio of two or more flows of fluid or fluent material
• CPC Class Codes: Y10T 137/0363 For producing proportionate flow
• CPC Class Codes: Y10T 137/2499 Mixture condition maintaining or sensing
• CPC Class Codes: Y10T 137/2509 By optical or chemical property
• CPC Class Codes: Y10T 137/2526 Main line flow displaces or entrains material from reservoir

Abstract

A device for introducing a first fluid into a second fluid stream comprising an enclosure and a member which causes release of a first fluid. The enclosure releasably retains the first fluid. The release causing member causes the release of the first fluid from the enclosure into the second fluid stream upon detection of a predetermined condition associated with the second fluid stream.

Claims

1. A device for introducing a first fluid into a second fluid stream comprising:

an enclosure for releasably retaining the first fluid; and

means for causing the release of the first fluid from the enclosure into the second fluid stream upon association with a predetermined condition associated with the second fluid stream, wherein the release causing means comprises a mechanically activated chemical gas generating cell associated with the enclosure.

2. The device according to claim 1 wherein the predetermined condition includes one or more of the group consisting of humidity, temperature, pH, conductivity, pressure and/or combustion.

3. The device according to claim 1 wherein the enclosure includes:

a moveable member capable of altering the volume of the enclosure; and

an opening associated with the enclosure and with the second fluid stream, wherein movement of the moveable member directs the first fluid through the opening.

4. The device according to claim 3 wherein the moveable member comprises a flexible membrane associated with the enclosure.

5. The device according to claim 3 wherein the moveable member comprises a piston slidably positionable within the enclosure.

6. The device according to claim 1 wherein the release causing means further includes electronic circuitry capable of detecting a predetermined condition associated with the second fluid stream.

7. The device according to claim 6 wherein the release causing means further includes at least one sensor capable of detecting a predetermined condition associated with the second fluid stream associated with the electronic circuitry.

8. The device according to claim 6 wherein the release causing means further includes at least one switch actuatable by a user upon detection of a predetermined condition associated with the second fluid stream.

9. The device according to claim 1 wherein the release causing means further includes at least one sensor capable of detecting a predetermined condition associated with the second fluid stream.

10. The device according to claim 9 wherein the release causing means is actuated by a predetermined condition selected from the group consisting of pH, temperature, humidity, hard water, air quality, conductivity and pressure sensors.

11. The device according to claim 1 wherein the second fluid is selected from the group consisting of oxygen, air and water based fluids.

12. The device according to claim 1 wherein the first fluid is selected from the group consisting of laundry formulations, such as liquid bleach, enzyme solutions, surfactants, concentrated detergents, water softeners, sud-controlling agents, whiteners, perfumes, corrosion inhibitors, bluing agent, antiseptic agents, fabric softeners, starch, pre-soaks, and mixtures thereof, mildew retardants, fragrances, air fresheners, plant food, chlorine solutions, water softener chemical solutions and insecticides.

13. The device according to claim 1 wherein the chemical gas generating device comprises an active agent, and means for activating the active agent.

14. The device according to claim 13 wherein the active agent comprises calcium hydride and the activating means comprises at least one of water and/or humidity.

15. The device according to claim 13 wherein the active agent comprises hydrazine solution and the activating means comprises a noble metal catalyst.

16. The device according to claim 13 wherein the active agent comprises sodium carbonate ant the activating means comprises citric acid.

17. The device according to claim 13 wherein the active agent comprises sodium azide and the activating means comprises a spark generating apparatus.

18. A method for introducing a first fluid into a second fluid stream comprising the steps of:

providing an enclosure for releasably retaining the first fluid;

providing a second fluid stream; and

causing the release of the first fluid from the enclosure into the second fluid stream, upon associating of the predetermined condition with the second fluid stream wherein the step of causing the release further comprises the step of actuating a mechanically activated chemical cell associated with the enclosure.

19. The method according to claim 18 wherein the step of detecting a predetermined condition comprises the step of sensing a condition associated with the second fluid stream through at least one sensor associated with the second fluid stream.

20. The method according to claim 18 wherein the step of causing the release of the first fluid comprises the step of moving a moveable member associated with the enclosure to release the first fluid into the second fluid stream.

21. The method according to claim 18 wherein the predetermined condition includes one or more of the group consisting of humidity, temperature, pH, conductivity, pressure and/or combustion.