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Electrode coiler of high-strength discharge lamp and its manufacture

A high-intensity discharge lamp, high-intensity technology, applied in the manufacture of discharge tubes/lamps, electrode system manufacturing, main electrodes of discharge tubes, etc., can solve problems such as increased labor intensity and poor maintenance of rewinding coils

Inactive Publication Date: 2003-04-02
OSRAM SYLVANIA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the rewind method presents fewer problems than the double helix method when the tungsten shank is inserted, the rewind coil does not hold its shape as well, and the process of having to wind the asymmetrical coil correctly around the tungsten shank adds labor strength
Orientation of the coils takes additional time and such machines quickly reach capacity limits

Method used

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  • Electrode coiler of high-strength discharge lamp and its manufacture
  • Electrode coiler of high-strength discharge lamp and its manufacture
  • Electrode coiler of high-strength discharge lamp and its manufacture

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Embodiment Construction

[0024] The present invention provides a more stable coil layer during production by forward winding the wire layers instead of reverse winding the wire layers. That is, two wires, one on top of the other, are wound on the mandrel in the same direction. This means that the second layer of wires is completely within the helical grooves on the outer surface of the first layer of wires. This arrangement is particularly stable and allows for faster insertion of the shank after removal of the mandrel.

[0025] Please refer to Figure 6 , an embodiment of the invention is an electrode coil for a high intensity discharge lamp. The electrode coil 30 may comprise a tungsten mandrel 32 having a free end 34 adapted to be disposed within a high intensity discharge lamp vessel. The first wire 36 is wound on the tungsten mandrel 32 in a first direction (such as from left to right, such as Figure 6 direction A shown), and each turn 38 of the first wire 36 is in contact with at least one ot...

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Abstract

A double-layer electrode coil for a high intensity discharge (HID) lamp and a method of making the electrode coil are provided. A more stable layer of coils is made by front winding, instead of back winding, the layers of wire. The second layer of wire is entirely within a helical groove on the exterior surface of the first layer of wire. This arrangement is particularly stable and permits more rapid insertion of the electrode shank after removal of the mandrel.

Description

technical field [0001] The present invention relates to electrode coils for high intensity discharge (HID) lamps and methods of manufacturing electrode coils for HID lamps. Background technique [0002] As shown in FIG. 1, a conventional high intensity discharge lamp comprises a lamp vessel 10 and two electrode coils 12 generally disposed at opposite ends thereof. The tube 10 is filled with a suitable gas and filling substance and then sealed. Each electrode coil 12 includes a tungsten shank 14 having a tungsten coil 16 within the lamp vessel 10 adjacent the free end of the tungsten shank 14 . [0003] Traditionally, the electrode coil 12 is manufactured by a double helix method or formed by rewinding a tungsten wire to form a second layer of wires, and the winding direction of the second layer of wires is opposite to that of the first layer of wires. This manufacturing method has proven to be incomplete. [0004] The double helix method includes the following steps: wind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J61/04H01J1/16H01J5/50H01J9/02H01J19/10H01J61/073H01S4/00
CPCH01J61/0732H01J9/02Y10T29/49002H01J61/04
Inventor C·A·亨廷顿S·K·丹哈姆
Owner OSRAM SYLVANIA INC
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