US2509709A - Contact pin for electric discharge tubes - Google Patents

Contact pin for electric discharge tubes Download PDF

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Publication number
US2509709A
US2509709A US790030A US79003047A US2509709A US 2509709 A US2509709 A US 2509709A US 790030 A US790030 A US 790030A US 79003047 A US79003047 A US 79003047A US 2509709 A US2509709 A US 2509709A
Authority
US
United States
Prior art keywords
pins
discharge tubes
contact
electric discharge
contact pin
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 - Lifetime
Application number
US790030A
Other languages
English (en)
Inventor
Spek Johannes Jacobus Van Der
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.)
Hartford National Bank and Trust Co
Original Assignee
Hartford National Bank and Trust Co
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 Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
Application granted granted Critical
Publication of US2509709A publication Critical patent/US2509709A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S228/00—Metal fusion bonding
    • Y10S228/903—Metal to nonmetal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/929—Electrical contact feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12993—Surface feature [e.g., rough, mirror]

Definitions

  • This invention relates to contact members, more particularly contact pins for electric discharge tubes and incandescent lamps.
  • contact members more particularly contact pins for electric discharge tubes and incandescent lamps
  • at least the contact surface is polished.
  • the material for the contacts preferably consists of ferrochromium, since this material is adapted to be sealed into glass.
  • the bulb I of the tube is closed by a base 2, into which contact pins 3 are sealed.
  • the pins are chemically polished and the electrode system is welded to the other end of the pins, the bulb being secured to the bottom piece and the tube further finished.
  • the exhaust tube 4 may be surrounded by an envelope 5 comprising a location lug 6, care being taken, of course, that after polishing the pins are not subjected to strong heating.
  • measures are taken to prevent oxidation of the pins even during the sealing-in operation, use may be made of polished pins obtained, for example, by cutting from a polished wire. In this case it is possible to polish the wire mechanically, the gist of the invention being that the pins, inasmuch as they are in contact with the air and serve as contact members, should acquire a very smooth surface.
  • contacts in the form of pins, but it will be obvious that the invention also applies to contacts of different shape, for example pins fixed in a cap or pins of plugs and the like. Furthermore it is not necessary for the pins to consist of ferrochromium. As an alternative they may also be made from nickel-iron, steel or similar hard material which is not subject to very strong oxidation.
  • a contact pin for discharge tubes and the like said pin being composed of a hard ferro alloy and having its contact surface polished by chemical action.
  • a contact pin for discharge tubes and the like said pin being composed of a ferrochromium alloy and having its contact surface p01- ished by chemical action.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Lead Frames For Integrated Circuits (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
US790030A 1946-10-05 1947-12-06 Contact pin for electric discharge tubes Expired - Lifetime US2509709A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL261759X 1946-10-05

Publications (1)

Publication Number Publication Date
US2509709A true US2509709A (en) 1950-05-30

Family

ID=19781543

Family Applications (1)

Application Number Title Priority Date Filing Date
US790030A Expired - Lifetime US2509709A (en) 1946-10-05 1947-12-06 Contact pin for electric discharge tubes

Country Status (6)

Country Link
US (1) US2509709A (it)
BE (1) BE476527A (it)
CH (1) CH261759A (it)
DE (1) DE857831C (it)
FR (1) FR953731A (it)
GB (1) GB655310A (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667528A (en) * 1951-11-21 1954-01-26 Columbia Broadcasting Syst Inc Electronic tube
US3391380A (en) * 1965-07-28 1968-07-02 Defense Electronics Inc Jacks and plugs for electronic equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB352945A (en) * 1930-04-10 1931-07-10 Philips Nv Improvements in or relating to electric discharge tubes
US2197511A (en) * 1938-02-21 1940-04-16 Lorenz C Ag Vacuum tube device
US2239423A (en) * 1939-04-07 1941-04-22 Gen Electric Iron-glass seal having nickel-iron contact prongs
US2308389A (en) * 1941-11-22 1943-01-12 Rca Corp Oxide coated cathode
US2329317A (en) * 1941-03-19 1943-09-14 Gen Electric X Ray Corp Method of conditioning anodes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH196790A (de) * 1935-10-23 1938-03-31 Telefunken Gmbh Elektrische Entladungsröhre.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB352945A (en) * 1930-04-10 1931-07-10 Philips Nv Improvements in or relating to electric discharge tubes
US2197511A (en) * 1938-02-21 1940-04-16 Lorenz C Ag Vacuum tube device
US2239423A (en) * 1939-04-07 1941-04-22 Gen Electric Iron-glass seal having nickel-iron contact prongs
US2329317A (en) * 1941-03-19 1943-09-14 Gen Electric X Ray Corp Method of conditioning anodes
US2308389A (en) * 1941-11-22 1943-01-12 Rca Corp Oxide coated cathode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667528A (en) * 1951-11-21 1954-01-26 Columbia Broadcasting Syst Inc Electronic tube
US3391380A (en) * 1965-07-28 1968-07-02 Defense Electronics Inc Jacks and plugs for electronic equipment

Also Published As

Publication number Publication date
DE857831C (de) 1952-12-01
GB655310A (en) 1951-07-18
CH261759A (de) 1949-05-31
FR953731A (fr) 1949-12-12
BE476527A (it)

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