GB813665A - Method of sealing glass envelopes of electrical devices containing gas at a pressure above atmospheric - Google Patents

Method of sealing glass envelopes of electrical devices containing gas at a pressure above atmospheric

Info

Publication number
GB813665A
GB813665A GB17781/57A GB1778157A GB813665A GB 813665 A GB813665 A GB 813665A GB 17781/57 A GB17781/57 A GB 17781/57A GB 1778157 A GB1778157 A GB 1778157A GB 813665 A GB813665 A GB 813665A
Authority
GB
United Kingdom
Prior art keywords
tube
above atmospheric
pressure above
gas
containing gas
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
GB17781/57A
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB813665A publication Critical patent/GB813665A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/40—Closing vessels
    • 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
    • Y10S53/00—Package making
    • Y10S53/03—Sealing electron tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Resistance Heating (AREA)

Abstract

813,665. Sealing electric lamps. SYLVANIA ELECTRIC PRODUCTS Inc. June 4, 1957 [June 27, 1956], No. 17781/57. Drawings to Specification. Class 39(2) In a method for sealing and tipping off the exhaust tube of a glass envelope filled with gas at a pressure above atmospheric e.g. gas-filled electric lamps such as photo flash bulbs, a portion of the tube is heated sufficiently to soften the glass but not to rupture it by the internal gas pressure, the softened portion is pinched closed, and the tube below the pinch is then exhausted and heated to cause it to flow into a gas tight seal, being finally tipped off. During the heating below the pinch, the tube may be stretched.
GB17781/57A 1956-06-27 1957-06-04 Method of sealing glass envelopes of electrical devices containing gas at a pressure above atmospheric Expired GB813665A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US594305A US2837880A (en) 1956-06-27 1956-06-27 Lamp sealing method

Publications (1)

Publication Number Publication Date
GB813665A true GB813665A (en) 1959-05-21

Family

ID=24378357

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17781/57A Expired GB813665A (en) 1956-06-27 1957-06-04 Method of sealing glass envelopes of electrical devices containing gas at a pressure above atmospheric

Country Status (2)

Country Link
US (1) US2837880A (en)
GB (1) GB813665A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032941A (en) * 1959-08-07 1962-05-08 Texas Instruments Inc Differential sealing of glass components
US3715798A (en) * 1970-06-12 1973-02-13 Dezurik Corp Assembling bellows damper unit
GB9807175D0 (en) * 1998-04-03 1998-06-03 Boc Group Plc Gas capsule
US7013617B2 (en) * 1999-04-01 2006-03-21 The Boc Group, Plc Method of filling and sealing
US9816612B2 (en) 2015-03-25 2017-11-14 Elkhart Products Corporation Hollow piston

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL59719C (en) * 1942-04-16
US2403073A (en) * 1943-09-29 1946-07-02 Gen Electric Method and apparatus for gas filling and tipping-off envelopes

Also Published As

Publication number Publication date
US2837880A (en) 1958-06-10

Similar Documents

Publication Publication Date Title
GB813665A (en) Method of sealing glass envelopes of electrical devices containing gas at a pressure above atmospheric
GB926387A (en) Indicator tube
GB1416287A (en) Discharge-lamp manufacture
GB1043172A (en) Electric lamp and manufacture thereof
GB986514A (en) Improvements in the manufacture of electric incandescent lamps
GB953210A (en) An electric intermediate pressure gas discharge lamp
GB533106A (en) Improvements in and relating to methods of exhausting and sealing envelopes having a metal portion to which the seal is applied
GB679795A (en) Improvements relating to the manufacture of sealed evacuated envelopes
GB788655A (en) Improvements in electric discharge lamps
GB476833A (en) Improvements in or relating to high-pressure metal-vapour electric discharge lamps
GB1284388A (en) Connector device for evacuating or filling a scaled enclosure
GB390787A (en) Improvements in electric discharge lamps
GB577738A (en) Improvements relating to sealing conductors through exhaust tubes of evacuated vitreous envelopes
JPS54123275A (en) Production of lamp bulb
GB800193A (en) Improvements in or relating to the manufacture of hermetically sealed glass vessels containing gas under pressure
GB1014482A (en) Improvements relating to the manufacture of vacuum electric incandescent lamps of the capless type
GB485937A (en) Method for the sealing off of electric lamps
US3321662A (en) Electric lamp with tubular body and light transmitting closure having over-lapping flange seal
GB1213713A (en) Incandescent lamp and method of sealing
GB838779A (en) Improvements in seals for electric discharge lamps
GB833886A (en) Improvements relating to t.r. devices
ES429177A1 (en) Method of manufacturing miniature incandescent lamps
GB780474A (en) Improvements in electric discharge lamps
GB1400644A (en) Process and apparatus for manufacturing electric gas discharge lamps
GB1255030A (en) Method of sealing vacuum vessels