Wick holder and wick assembly for candle assembly

• US 7,318,724 B2
• Filed: 05/06/2005
• Issued: 01/15/2008
• Est. Priority Date: 09/10/2004
• Status: Expired due to Fees

• Current Assignee: SC Johnson & Son Incorporated
• Original Assignee: SC Johnson & Son Incorporated
• Inventors: Nelson, Cory J., Furner, Paul E., Kubicek, Chris A., Szymczak, Thomas J.
• Primary Examiner(s): McAllister; Steve
• Assistant Examiner(s): NDUBIZU, CHUKA CLEMENT
• Application Number:
  US11/124,313
• Publication Number:
  US 20060057529A1
• Time in Patent Office: 984 Days
• Field of Search: 431/289, 431/295, 431/253, 431/322, 431/325, 431/294
• US Class Current: 431/289
• CPC Class Codes: F23D 3/16 using candles

Abstract

A candle assembly includes a support base, a melting plate having a capillary pedestal, a wick holder that fits onto the capillary pedestal, and a fuel element that fits over the wick holder. The wick holder includes a sleeve having first and second open ends. A wick fits into the sleeve and extends between the open ends. The sleeve has a constricted portion, which is disposed between the open ends and has a cross-sectional area less than any other cross-sectional area between the open ends. The constricted portion reduces an effective capillary fluid flow capacity of the wick between the open ends, which may thereby regulate how quickly fuel is consumed when the candle assembly is burning. A capillary well disposed between the wick holder and the capillary pedestal may be adapted to promote a successful relight after an initial burn of the candle assembly. A candle holder, such as including the melting plate supported by a base, may be adapted to promote laminar air flow thereacross during a burn in a substantially calm atmospheric environment.

Claims

1. A wick assembly comprising:

an enclosed wick casing extending between a first open end and a second open end;

a wick extending between the first open end and the second open end with at least a portion of the wick surrounded by the wick casing;

a base portion at the first open end, the base portion comprising a peripheral skirt that projects outwardly and downwardly from the wick casing and a textured inner surface that is shaped and sized to conform closely around an upwardly projecting pedestal; and

a restricted portion of the wick casing having a cross sectional area less than a cross sectional area of either the first open end or the second open end, wherein the restricted portion of the wick casing reduces an effective capillary flow capacity along the wick.

2. The wick assembly of claim 1, wherein the cross-sectional area of the first open end is substantially the same as the cross-sectional area of the second open end.

3. The wick assembly of claim 2, wherein the wick casing is a tube.

4. The wick assembly of claim 3, wherein the wick casing is a cylinder.

5. The wick assembly of claim 1, wherein the restricted portion of the wick casing is defined by a minimum of one indentation in the wick casing.

6. The wick assembly of claim 1, wherein the restricted portion of the wick casing is defined by a plurality of indentations in the wick casing.

7. The wick assembly of claim 5, wherein the indentation is an annular ridge.

8. The wick assembly of claim 1, wherein the wick protrudes from the first open end and the second open end, and wherein the wick is adapted to absorb fluid fuel material at a base end thereof and to be lighted at an end opposite the base end.

9. The wick assembly of claim 8, wherein the base portion is adapted to provide a supply of melted fluid fuel material to the base end of the wick.

10. The wick assembly of claim 9, wherein the base portion is adapted to cause capillary flow of melted fuel material toward only the base end of the wick when engaged over a capillary pedestal.

11. The wick assembly of claim 9, wherein openings through the base portion are adapted to provide the supply of melted fluid fuel material to the base end of the wick.

12. The wick assembly of claim 1, wherein the restricted portion of the wick casing includes an indentation in the wick casing that fixedly maintains the wick in a preselected position.

13. A wick holder comprising:

an elongate enclosed wick casing extending from a base portion and having a first open end and a second open end, wherein the base portion includes an end wall and a down-turned annular skirt extending from the end wall in an opposite direction from the wick casing, and wherein the annular skirt has a textured inner surface that is shared and located to maintain a capillary space between the annular skirt and an upward projection surrounded by the annular skirt; and

a constricted portion of the wick casing, wherein the constricted portion restricts an effective capillary fluid flow capacity between opposite open ends of the wick casing.

14. The wick holder of claim 13, wherein the first open end is in the end wall and the second open end is opposite the first open end.

15. The wick holder of claim 13, wherein the constricted portion includes an indentation in the wick casing.

16. The wick holder of claim 13 further including a fin for transferring thermal energy away from the casing.

17. A wick assembly comprising:

a tube having a sidewall extending between a first open end and a second open end;

a base at one end of the tube for supporting the tube in a substantially vertical position, wherein the base portion comprises a peripheral skirt that projects outwardly and downwardly from the tube and a textured inner surface that is shaped and sized to conform closely around an upwardly projecting pedestal; and

,

a wick at least partly disposed in the tube and extending between the first open end and the second open end.