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US 10,475,615 B2Granted
Production method of negative electrode, negative electrode, and X-ray tube device
AssigneeShimadzu Corporation
InventorsShinichiro Okamura, Atsushi Yajima
Life of this patent
Estimating the term…
Abstract
This method of producing a negative electrode includes a step of adjusting a heat transfer coefficient between a leg portion and a fixing portion so that at least one of leg portions and the other leg portions become different in the heat transfer coefficient by deforming the plurality of fixing portions by applying pressure to the plurality of fixing portions from the outside thereof to fix the leg portions to the fixing portions.
Claims3
A negative electrode comprising:
- an electron emitting portion configured to emit electrons by electric heating;
- a plurality of leg portions extending from the electron emitting portion;
- and
- a plurality of metallic fixing portions each having a recess into which the leg portion is inserted and joined, wherein
- a joint strength of at least one of the leg portions with respect to the fixing portion is different from joint strengths of the other leg portions with respect to the fixing portions, and
- at least one of the leg portions and the other leg portions are different in heat transfer coefficient between the leg portion and the fixing portion.
3 more elements
A negative electrode comprising:
- an electron emitting portion configured to emit electrons by electric heating;
- a plurality of leg portions extending from the electron emitting portion;
- and
- a plurality of metallic fixing portions each having a recess into which the leg portion is inserted and joined, wherein
- at least one of the fixing portions is different in material from the other fixing portions, and
- at least one of the fixing portions and the other fixing portions are different in heat transfer coefficient between the leg portion and the fixing portion.
3 more elements
An X-ray tube device comprising:
- a positive electrode;
- and
- a negative electrode, wherein
- the negative electrode includes a plurality of leg portions extending from the electron emitting portion and a plurality of metallic fixing portions each having a recess into which the leg portion is inserted and joined, and
- at least one of the fixing portions is different in material from the other fixing portions, and at least one of the fixing portions and the other fixing portions are different in heat transfer coefficient between the leg portion and the fixing portion.
2 more elements
Dependencies are inferred from the claim text.