Claims
- 1. A luminous element for an incandescent lamp, the luminous element having a shape of a double helix with two terminals arranged at one end of the double helix, wherein a diameter of the double helix increases continuously in a direction of the two terminals of the luminous element, and wherein a lead of turns of the double helix increases continuously in the direction of the two terminals of the luminous element.
- 2. The luminous element as claimed in claim 1, wherein the continuous increase in the diameter of the double helix and the continuous increase in the lead of the turns of the double helix each comprise one of a linear, quadratic, cubic and exponential increase.
- 3. An incandescent lamp having a luminous element as claimed in claim 2.
- 4. An incandescent lamp having a luminous element as claimed in claim 1.
- 5. A method for producing a luminous element, comprising:a. fixing a wire forming the luminous element on a first end of a rotationally symmetrical winding spindle whose diameter increases continuously from the first end up to a winding end section; b. winding the wire on the winding spindle between first end and the winding end section, wherein turns of the wire are arranged offset on the winding spindle; and c. drawing the luminous element off from the winding spindle.
- 6. The method as claimed in claim 5, wherein in step a) the wire is inserted into a notch on the first end of the winding spindle.
- 7. The method as claimed in claim 6, wherein after step b) and before step c) each free wire end is bent over on a bent-over section of the winding spindle such that after being bent over, the wire ends are orientated substantially in a direction of a longitudinal axis of the winding spindle.
- 8. The method as claimed in claim 7, wherein step b) is performed in such a way that a lead of windings on the winding spindle increases continuously from the first end of the winding spindle to the winding end section.
- 9. The method as claimed in claim 8, wherein the continuous increase in the diameter of the winding spindle and the continuous increase in the lead of the windings each comprise one of a linear, quadratic, cubic and exponential increase.
- 10. The method as claimed in claim that wherein the continuous increase comprises one of a linear, quadratic, cubic and exponential increase.
- 11. The method as claimed in claim 6, wherein step b) is performed in such a way that a lead of windings on the winding spindle increases continuously from the first end of the winding spindle to the winding end section.
- 12. The method as claimed in claim 11, wherein the continuous increase in the diameter of the winding spindle and the continuous increase in the lead of the windings each comprise one of a linear, quadratic, cubic or and exponential increase.
- 13. The method as claimed in claim 6, that wherein the continuous increase comprises one of a linear, quadratic, cubic and exponential increase.
- 14. The method as claimed in claim 5, wherein after step b) and before step c) each free wire end is bent over on a bent-over section of the winding spindle such that after being bent over, the wire ends are orientated substantially in a direction of a longitudinal axis of the winding spindle.
- 15. The method as claimed in claim 14, wherein step b) is performed in such a way that a lead of windings on the winding spindle increases continuously from the first end of the winding spindle to the winding end section.
- 16. The method as claimed in claim 15, wherein the continuous increase in the diameter of the winding spindle and the continuous increase in the lead of the windings each comprise one of a linear, quadratic, cubic and exponential increase.
- 17. The method as claimed in claim 14, wherein the continuous increase comprises one of a linear, quadratic, cubic and exponential increase.
- 18. The method as claimed in claim 5, wherein step b) is performed in such a way that a lead of the windings on the winding spindle increases continuously from the first end of the winding spindle to the winding end section.
- 19. The method as claimed in claim 18, wherein the continuous increase in the diameter of the winding spindle and the continuous increase in the lead of the windings each comprise one of a linear, quadratic, cubic and exponential increase.
- 20. The method as claimed in claim 5, wherein the continuous increase comprises one of a linear, quadratic, cubic and exponential increase.
Priority Claims (1)
Number |
Date |
Country |
Kind |
100 01 007 |
Jan 2000 |
DE |
|
Parent Case Info
This application is a U.S. National Phase Application under 35 USC 371 of International Application PCT/DE00/04272 filed Nov. 20, 2000.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/DE00/04272 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO01/52305 |
7/19/2001 |
WO |
A |
US Referenced Citations (6)
Foreign Referenced Citations (5)
Number |
Date |
Country |
PS 482360 |
Sep 1929 |
DE |
44 20 607 |
Dec 1995 |
DE |
PS 104298 X |
Jan 1998 |
DE |
470 744 |
Sep 1914 |
FR |
871 324 |
Apr 1942 |
FR |