GB234442A - - Google Patents

Info

Publication number
GB234442A
GB234442A GB1092/25A GB109225A GB234442A GB 234442 A GB234442 A GB 234442A GB 1092/25 A GB1092/25 A GB 1092/25A GB 109225 A GB109225 A GB 109225A GB 234442 A GB234442 A GB 234442A
Authority
GB
United Kingdom
Prior art keywords
parts
filament
another
filaments
distance
Prior art date
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
GB1092/25A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB234442A publication Critical patent/GB234442A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/15—Cathodes heated directly by an electric current

Landscapes

  • Discharge Lamp (AREA)
  • Golf Clubs (AREA)
  • Gloves (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

234,442. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. May 21, 1924, [Convention date]. Filaments; supports for.-The filament of a thermionic valve or rectifying tube consists of several parts which are so arranged that the electrodynamic forces acting on these parts substantially neutralize one another. A filament may consist of two parts 6, 7, arranged parallel with one another, connected at one end to a conductor 9 and at the other end to a metal clip 1. This clip has two limbs 3, 4 also parallel with one another and with the parts of the filament. The distance between the wires 3, 4 must be #3 times the distance between the filaments 6, 7. The Specification as open to inspection under Sect. 91 (3) (a) also describes a construction in which a filament consisting of several parts may have these parts arranged parallel with one another and so disposed as to pass through the points of an equilateral polygon having an even number of sides. The Specification further states that filaments according to the invention may be used for electric incandescent lamps. This subject-matter does not appear in the Specification as accepted.
GB1092/25A 1924-05-21 1925-01-13 Expired GB234442A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1682642X 1924-05-21

Publications (1)

Publication Number Publication Date
GB234442A true GB234442A (en) 1925-12-10

Family

ID=19872956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1092/25A Expired GB234442A (en) 1924-05-21 1925-01-13

Country Status (4)

Country Link
US (1) US1682642A (en)
FR (1) FR597805A (en)
GB (1) GB234442A (en)
NL (1) NL16656C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634921A (en) * 1984-07-03 1987-01-06 Sony Corporation Thermionic cathode heater

Also Published As

Publication number Publication date
NL16656C (en)
US1682642A (en) 1928-08-28
FR597805A (en) 1925-11-30

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