US2169112A - Hermetically sealed vessel - Google Patents

Hermetically sealed vessel Download PDF

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Publication number
US2169112A
US2169112A US263358A US26335839A US2169112A US 2169112 A US2169112 A US 2169112A US 263358 A US263358 A US 263358A US 26335839 A US26335839 A US 26335839A US 2169112 A US2169112 A US 2169112A
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US
United States
Prior art keywords
vessel
opening
tube
filament
leading
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
US263358A
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English (en)
Inventor
William J Scott
William T Cowhig
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US2169112A publication Critical patent/US2169112A/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
    • 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

Definitions

  • Patented Aug. 3, 1939 I 2,169,112
  • This invention relates to hermetically sealed sealed.
  • a portion ll of the tube l3 extends into vessels and method of hermetically sealing such the interior of theenvelope.
  • Leading-in wires vessels, more particularly to envelopes of elec- I5 also pass through the stem l2 and carry a trio lamps, discharge devices or the like.
  • filament l6 at their inner ends.
  • An object of the present invention is to proto a vacuum, pump and sealed off at a point outvide an improved method and means for sealside the envelope if desired.
  • Fig. 2 we have shown a lamp in which a The invention utilizes a fusible part which re-entrant tube I9 is secured to the envelope extends within the interior of the vessel and I0 on the opposite side of the bulb from the which preferably, although not necessarily, constem l2. Otherwise the'arrangement is similar stitutes a continuation of the tube through which to that illustrated in Fig. 1.
  • the heater l8 in this case is so designedas part are subjected to substantially thesame presto dimensions and current-carrying capacity sure, it may readily collapse when fused by this that it may be made to heat the tube It to the means to form a fused closure for the exhaust desired temperature during sealing but will burn opening.
  • mechanical pressure suitoutupon application of the voltage applied to ably applied to the fusible part may be used to the filament 5 during normal operation thereassist the collapse of the part upon fusion. of, so that it does not short circuit the filament
  • reference should be had to the accomu h a a sheetof mica, is provided b twe th pourin d aw in w c 1 s a sectional filament l6 and heating coil in to protect the View of an electric lamp arranged for sealing acfilament from damage during li Ordmg our invention; 2 is a side elem"
  • Fig. 4 we have shown a further modification tional View of an j? lamp P of our invention in which means other than a entrant sealing tube positioned at a point other heating coil is provided to fuse the glass than in the lamp stem; Fig.
  • FIG. 3 is a sectional view of a lamp stem provided with a shield between g g zri fg g 5 :2 i g g ggfifi 5 the filament and a heater coil which is connected across the filament leads; and
  • Fig 4 is a tiv ty to facilitate inductive heating thereof potj l View f a iamp stem provided with an sitioned in heat exchanging relation with the ductive heater illustrating a further embodiment tube- The partlcfllar element Shown comlnlses of our invention.
  • an inverted cup-l1ke metal member 22 Whlch is w
  • the tube velope is a stem I2 through which a tube I3 is or cap is heated inductively by a high frequency ail? electromagnetic field so as to cause softening and fusion of the tube II.
  • the heater coil in any of the modificationsillustrated in Figs. 1 to 3 may be conveniently made of tungsten wire or a wire which may act as a getter, or the heating coil illustrated in any of these figures may be inductively heated. In the latter case it need not be connected across the leading-in wires, but may be supported from one only or may be wound around the re-entrant tube for support.
  • the method of preparing and sealing a vessel which comprises forming within the vessel an inwardly extending member having an opening therein, utilizing said opening to adjust the gaseous content of the vessel to a desired value, and thereafter applying heat to said member sufiicient to fuse a portion of said member at a point within said vessel and thereby to seal said opening.
  • the method of preparing and sealing a vessel which comprises forming within the vessel an inwardly extending member having an opening therein, evacuating said vessel through said opening, and applying heat to said member sufficient to fuse a portion of said member at a point within said vessel and thereby to seal said opening.
  • the method of preparing and sealing a vessel which comprises forming within said vessel an inwardly extending member having an opening therein, filling said vessel with a charge of suitable gas through said opening, and applying heat to said member suflicient to fuse a portion of said member at a point within said vessel, thereby to seal said opening.
  • a gas tight vessel of means for adjusting the gaseous content of said vessel to a desired value comprising a re-entrant member extending inwardly into the interior of said vessel, said member having an opening communicating therethrough with the exterior of said vessel, fusible means for sealing said opening in said re-entrant member at a point within the interior of said vessel, and means for applying heat to said fusible means in said vessel thereby to seal said opening.
  • a gas tight vessel having an electrical filament therein and a pair of leading-in conductors connected to said filament and extending through a wall of said vessel
  • the combination which includes means for adjusting the gaseous content of said vessel comprising a reentrant member projecting into said vessel and having an opening therein, and means including a heater coil for applying heat to a portion of said re-entrant member sufficient to fuse it at a point within the interior of said vessel and thereby to seal said opening, said heater coil being connected to said leading-in wires and adapted to burn out upon application of the voltage to be applied to the filament during normal operation thereof.
  • a gas tight vessel having an electrical filament therein and a pair of leading-in conductors connected to said filament and extending through a wall of said vessel
  • the combination which includes means for adjusting the gaseous content of said vessel comprising a reentrant member projecting into said vessel and having an opening therein, heater coil for applying heat to a portion of said re-entrant member sufficient to fuse it at a point within the interior of said vessel and thereby to seal said opening, said heater coil being connected to said leading-in wires and adapted to burn out upon application of the voltage to be applied to the filament during normal operation thereof, and protective means including a shield interposed between said heater coil and said filament.
  • a gas tight vessel having an electrical filament therein and a pair of leading-in conductors connected to said filament and extending through a wall of said vessel
  • the combination which includes means for adjusting the gaseous content of said vessel comprising a reentrant member projecting into said vessel and having an opening therein, and means for ap-- plying heat to a portion of said re-entrant member suflicient to fuse it at a point within the interior of said vessel, said last-named means including an element of sufiicient conductivity to facilitate inductive heating thereof positioned in heat-exchanging relationship with said portion of said re-entrant member.
  • a gas tight vessel having an electrical filament therein and a pair of leading-in conductors connected to said filament and extend ing through a wall of said vessel
  • the combination which includes means for adjusting the gaseous content of said vessel comprising a reentr-ant member projecting into said vessel and having an opening therein, a heater coil for applying heat to a portion of said re-entrant member sufiicient to fuse it at a point within the interior of said vessel and thereby sealing said opening, a third leading-in wire, said heater coil being connected to one of said pair of leading-in wires and to said third leading-in wire.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Resistance Heating (AREA)
  • Joining Of Glass To Other Materials (AREA)
US263358A 1938-10-15 1939-03-22 Hermetically sealed vessel Expired - Lifetime US2169112A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29913/38A GB519355A (en) 1938-10-15 1938-10-15 Improvements in and relating to methods of hermetically sealing vitreous or ceramic vessels

Publications (1)

Publication Number Publication Date
US2169112A true US2169112A (en) 1939-08-08

Family

ID=10299234

Family Applications (1)

Application Number Title Priority Date Filing Date
US263358A Expired - Lifetime US2169112A (en) 1938-10-15 1939-03-22 Hermetically sealed vessel

Country Status (5)

Country Link
US (1) US2169112A (enrdf_load_stackoverflow)
DE (1) DE701250C (enrdf_load_stackoverflow)
FR (1) FR860870A (enrdf_load_stackoverflow)
GB (1) GB519355A (enrdf_load_stackoverflow)
NL (1) NL54277C (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2664517A (en) * 1952-02-27 1953-12-29 Westinghouse Electric Corp Tipless quartz lamp
US2716201A (en) * 1951-02-23 1955-08-23 Hivac Ltd Electric incandescent lamps
US2889670A (en) * 1954-04-21 1959-06-09 Nat Union Electric Corp Method of manufacturing an electron tube
US3351802A (en) * 1964-06-12 1967-11-07 Sylvania Electric Prod Single ended, quartz type incandescent lamp
US20060181190A1 (en) * 2005-02-14 2006-08-17 Chao-Lin Wu Energy-saving lamp

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473860A (en) * 1946-11-09 1949-06-21 Gen Electric Internal exhaust seal for electric lamps and similar devices

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716201A (en) * 1951-02-23 1955-08-23 Hivac Ltd Electric incandescent lamps
US2664517A (en) * 1952-02-27 1953-12-29 Westinghouse Electric Corp Tipless quartz lamp
US2889670A (en) * 1954-04-21 1959-06-09 Nat Union Electric Corp Method of manufacturing an electron tube
US3351802A (en) * 1964-06-12 1967-11-07 Sylvania Electric Prod Single ended, quartz type incandescent lamp
US20060181190A1 (en) * 2005-02-14 2006-08-17 Chao-Lin Wu Energy-saving lamp

Also Published As

Publication number Publication date
NL54277C (enrdf_load_stackoverflow)
DE701250C (de) 1941-01-11
GB519355A (en) 1940-03-21
FR860870A (fr) 1941-01-25

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