Lampholder system with lock
US-12234970-B1 · Feb 25, 2025 · US
Cathode component for discharge lamp
US9030100B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9030100-B2 |
| Application number | US-201314378983-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 13, 2013 |
| Priority date | Feb 15, 2012 |
| Publication date | May 12, 2015 |
| Grant date | May 12, 2015 |
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Abstract
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A highly durable cathode component for a discharge lamp is provided. A cathode component for a discharge lamp includes a barrel having a wire diameter of 2 to 35 mm and a tapered front end, wherein the cathode component comprises a tungsten alloy containing 0.5 to 3% by weight, in terms of oxide (ThO 2 ), of a thorium component, not less than 90% of tungsten crystals are accounted for by tungsten crystals having a grain size in the range of 1 to 80 μm, as observed in terms of an area ratio of 300 μm×300 μm in unit area in a circumferential cross section of the barrel, and are accounted for by tungsten crystals having a grain size in the range of 10 to 120 μm, as observed in terms of an area ratio of 300 μm×300 μm in unit area in a side cross section of the barrel.
First claim
Opening claim text (preview).
The invention claimed is: 1. A cathode component for a discharge lamp, the cathode component comprising: a barrel having a wire diameter of 2 to 35 mm; and a tapered front end, wherein the cathode component comprises a tungsten alloy containing 0.5 to 3% by weight, in terms of oxide (ThO 2 ), of a thorium component, not less than 90% of tungsten crystals are accounted for by tungsten crystals having a grain size in the range of 1 to 80 μm, as observed in terms of an area ratio o…
Assignees
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Classifications
- H01J9/003Primary
Electricity · mapped topic
- H01J61/0677Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9030100B2 cover?
- A highly durable cathode component for a discharge lamp is provided. A cathode component for a discharge lamp includes a barrel having a wire diameter of 2 to 35 mm and a tapered front end, wherein the cathode component comprises a tungsten alloy containing 0.5 to 3% by weight, in terms of oxide (ThO 2 ), of a thorium component, not less than 90% of tungsten crystals are accounted for by tungst…
- Who is the assignee on this patent?
- Toshiba Kk, Toshiba Materials Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01J9/003. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 12 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).