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US 5,402,035 AGranted
Cathode structure for an electron tube
AssigneeGoldstar Co., Ltd.
InventorGyeong S. Lee
Life of this patent
Estimating the term…
Abstract
An electron tube includes a cathode structure which has a hollow cylindrical sleeve having a heater mounted within the sleeve. There is a cathode cap disposed at the top of the sleeve to contain an electron emission material. A hollow cylindrical cathode holder is used for supporting the sleeve. A unitary support interconnects the sleeve and the holder and has formed in its outer peripheral wall a plurality of circumferentially spaced through holes for preventing deformation of the support.
Claims11
A cathode structure for an electron tube comprising:
- a hollow, cylindrical sleeve having a heater mounted therein and a cathode cap disposed at its top to contain an electron emission material;
- a hollow, cylindrical cathode holder for supporting said sleeve;
- and
- a unitary support interconnecting said sleeve and said cathode holder and having formed in its peripheral wall a plurality of circumstantially spaced through-holes for preventing thermal deformation thereof the holes having an outer limit defined by a solid portion of the support.
1 more element
A cathode structure for an electron tube comprising:
- a hollow, cylindrical sleeve having a heater mounted therein and a cathode cap disposed at its top to contain an electron emission material;
- a hollow, cylindrical cathode holder for supporting said sleeve;
- and
- a unitary support interconnecting said sleeve and said cathode holder and having formed in its peripheral wall a plurality of circumstantially spaced through-holes for preventing thermal deformation thereof the holes having an outer limit defined by a solid portion of the support;
- and
- the holes being completely surrounded by an inner wall of the cathode holder, so that electrical leakage is prevented between the heater and the emission material.
3 more elements
Dependencies are inferred from the claim text.