Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB40439/59A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tesla AS
Original Assignee
Tesla AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tesla ASfiledCriticalTesla AS
Publication of GB871260ApublicationCriticalpatent/GB871260A/en
H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J2893/00—Discharge tubes and lamps
H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
H01J2893/0012—Constructional arrangements
H01J2893/0019—Chemical composition and manufacture
H01J2893/0022—Manufacture
Landscapes
Solid Thermionic Cathode
(AREA)
Abstract
An electron discharge tube has a grid made of wire of high melting point metal, coated with an alloy comprising at least one precious metal from the group Au, Ag, in a proportion of 30-60% and at least one common metal from the group Cu, Ni, in a total quantity of 70-40%. Examples of alloys are 40% Ag, 55% Cu, 5% Ni and 60% Au, 40% Ni.
GB40439/59A1958-11-281959-11-27An electron tube grid
ExpiredGB871260A
(en)