Dispenser which incrementally heats fluids with substantial non-volatile constituent parts

• US 6,311,868 B1
• Filed: 11/22/1999
• Issued: 11/06/2001
• Est. Priority Date: 04/06/1998
• Status: Expired due to Term

• Current Assignee: SC Johnson & Son Incorporated
• Original Assignee: New Sensations, L.L.C.
• Inventors: Krietemeier, Rickie F., Gebhard, Albert W.
• Primary Examiner(s): Kaufman, Joseph A.
• Application Number:
  US09/444,527
• Time in Patent Office: 715 Days
• Field of Search: 222/1, 222/54, 222/642, 222/146.5, 222/325, 222/444
• US Class Current: 222/1
• CPC Class Codes: A45D 34/00 Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
• CPC Class Codes: A45D 44/00 Other cosmetic or toiletry articles, e.g. for hairdressers' rooms
• CPC Class Codes: A47J 31/542 Continuous-flow heaters
• CPC Class Codes: G01F 11/28 with stationary measuring chambers having constant volume during measurement

Abstract

The present invention discloses a method and apparatus for quickly heating a predetermined volume of viscous fluid and dispensing it efficiently at one or more selected temperatures. The viscous fluid includes substantial non-volatile constituent parts. In one embodiment, the predetermined volume of viscous fluid is partially housed in a predelivery chamber separate from the main fluid reservoir. A heater assembly heats the viscous fluid in the predelivery chamber in a short time period and in small volumes to prevent overheating and adversely effecting the composition of the viscous fluid. To avoid continually heating the viscous liquid, a timer circuit is used in one embodiment.

Claims

1. A fluid pump and delivery apparatus adapted for dispensing a viscous lotion at either ambient or elevated temperatures, comprising:

a main fluid reservoir which is substantially unheated;

a pumping assembly;

a predelivery chamber;

a heating assembly having a heating element positioned within an internal diameter of said predelivery chamber and which controls an exit temperature of the viscous lotion by heating the heating element for a predetermined period of time;

a dispensing spout which dispenses the viscous lotion; and

a power button in operative communication with said heating and said pumping assemblies which activates said heating and said pumping assemblies upon demand, wherein the viscous lotion stored in said main fluid reservoir is transferred to said dispensing spout after receiving heat energy from said heating element positioned within said predelivery chamber.

2. The apparatus of claim 1, further comprising a timer which powers-down the heating assembly after a predetermined time.

3. The apparatus of claim 1, further comprising a microprocessor which controls the temperature of the viscous lotion in the predelivery chamber based on the amount of time said heating assembly is activated.

4. The apparatus of claim 1, further comprising an insulating wall between the heating assembly and the main fluid reservoir.

5. The apparatus of claim 1, further comprising a temperature overheat sensor which powers-down the heating assembly if a temperature in said predelivery chamber reaches a predetermined temperature.

6. The apparatus of claim 1, wherein said viscous lotion substantially surrounds said heating assembly positioned within said predelivery chamber prior to being dispensed through said dispensing spout.

7. The apparatus of claim 1, further comprising a fluid conduit which includes the predelivery chamber and a dispensing spout, wherein a first internal diameter of at least a portion of the dispensing spout is less than a second internal diameter of at least a portion of the predelivery chamber.

8. The apparatus of claim 1, wherein said dispensing spout further comprises a check valve to prevent air from entering into said dispensing spout.

9. The apparatus of claim 1, wherein the pumping assembly includes:

a gear pump spur;

a motor; and

a drive train including a plurality of gears, wherein the motor is interconnected to the drive train which is interconnected to the gear pump spur.

10. The apparatus of claim 1, wherein the main fluid reservoir is adapted to receive a disposable container.

11. The apparatus of claim 1, further comprising a fluid conduit which extends from the main fluid reservoir to the dispensing spout, said fluid conduit having an annular flow path which travels between an outer diameter of said heating assembly and an inner diameter of said predelivery chamber.

12. The apparatus of claim 1, further comprising a non-conductive housing comprised of a plastic material.

13. The fluid pump and delivery system for heating and dispensing the viscous fluid of claim 1, further comprising an LED for indicating if at least one of:

the pump and delivery system is powered, and

the viscous lotion is heated to a predetermined set point.

14. The apparatus of claim 1, further comprising a preheat button which heats said viscous lotion in said predelivery chamber prior to allowing said viscous lotion from being transferred from said predelivery chamber to said delivery spout.

15. A method for heating and dispensing a viscous fluid which includes substantial non-volatile constituent parts, comprising the steps of:

storing the viscous fluid in a main fluid reservoir at an ambient temperature;

pumping a portion of the viscous fluid into a predelivery chamber;

heating the portion of the viscous fluid located in the predelivery chamber above the ambient temperature for a predetermined time period with a heating assembly positioned within the predelivery chamber; and

dispensing the portion of the heated viscous fluid stored in the predelivery chamber through a dispensing spout upon depression of a power button which is in operative communication with a pumping assembly.

16. The method for heating and dispensing a viscous fluid of claim 15, further comprising the step of sealing an end of said dispensing spout near a delivery point with a check valve, wherein air is not allowed to enter the dispensing spout or predelivery chamber.

17. The method for heating and dispensing a viscous fluid of claim 15, wherein the dispensing step is powered by removable batteries.

18. The method of claim 15, wherein the fluid traveling through the predelivery chamber travels in an annular space defined by the interior diameter of the predelivery chamber and the exterior diameter of said heating element.

19. The method for heating and dispensing a viscous fluid of claim 15, wherein the heating step is performed electrically.

20. A pump and delivery system for dispensing and/or heating a viscous lotion, comprising:

a main fluid reservoir which is substantially unheated;

a pumping assembly;

a predelivery chamber;

a heating assembly having a heating element positioned within an internal diameter of said predelivery chamber;

a timer which controls the time said heating assembly is activated in the predelivery chamber to control an exit temperature of the dispensed viscous lotion;

an overheat sensor which powers-down the heating assembly if a temperature reaches a predetermined temperature;

a dispensing spout which dispenses the viscous lotion; and

a power button coupled to said heating and said pumping assembly which activates the heating and pumping assembly upon demand, wherein the viscous fluid stored in the main fluid reservoir is transferred to the dispensing spout after receiving heat energy within said predelivery chamber.

21. The pump and delivery system of claim 20, wherein said dispensing spout further comprises a check valve positioned therein to substantially prevent air from entering said dispensing spout and traveling to said predelivery chamber.

22. The pump and delivery system of claim 20, further comprising a microprocessor in operative communication with said power button, said timer, said pumping assembly and said heating assembly, wherein when said power button is pushed the sequence and timing for pumping, heating and discontinuing heating is automatically controlled.