US3749562A - Method for making dry reed switches - Google Patents

Method for making dry reed switches Download PDF

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Publication number
US3749562A
US3749562A US00234918A US3749562DA US3749562A US 3749562 A US3749562 A US 3749562A US 00234918 A US00234918 A US 00234918A US 3749562D A US3749562D A US 3749562DA US 3749562 A US3749562 A US 3749562A
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US
United States
Prior art keywords
envelope
glass
tube
tip
dry reed
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
US00234918A
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English (en)
Inventor
M Nicolas
J Alison
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.)
CO IND FRANCOISE TUBES ELECTRO
CO INDUSTRIELLE FRANCOISE TUBES ELECTRONIQUES FR
Amphenol Corp
Original Assignee
CO IND FRANCOISE TUBES ELECTRO
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 CO IND FRANCOISE TUBES ELECTRO filed Critical CO IND FRANCOISE TUBES ELECTRO
Application granted granted Critical
Publication of US3749562A publication Critical patent/US3749562A/en
Assigned to ALLIED CORPORATION, A CORP. OF NEW YORK reassignment ALLIED CORPORATION, A CORP. OF NEW YORK ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: OREGA CIRCUITS ET COMMUNICATION, A CORP. OF FRANCE
Assigned to CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK AGENCY, AS AGENT reassignment CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK AGENCY, AS AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMPHENOL CORPORATION
Assigned to AMPHENOL CORPORATION, A CORP. OF DE reassignment AMPHENOL CORPORATION, A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ALLIED CORPORATION, A CORP. OF NY
Anticipated expiration legal-status Critical
Assigned to AMPHENOL CORPORATION A CORP. OF DELAWARE reassignment AMPHENOL CORPORATION A CORP. OF DELAWARE RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CANADIAN IMPERIAL BANK OF COMMERCE
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

  • a dry reed switch is provided with a metal tube penetrating into one of the ends of the switch envelope and carrying at its end a small glass tube.
  • the free end of this latter tube is susceptible of melting under the action of infrared rays so as to close the envelope of the switch after evacuation thereof.
  • the present invention relates to dry reed switches, As is well known such switches comprise within an evacuated, generally elongated, enclosure, two blades or reeds arranged for contacting each other under the action of an externally operated magnetic iield.
  • a dry reed switch comprising: an elongated envelope; within said envelope two reed switch contact elements capable of making contact with each other under the action of an external magnetic field; a metal tube extending into said envelope at one end thereof, said metal tube carrying at its end within said envelope a glass tube, tightly connected thereto and having a free end portion, at least said end portion of said glass tube being capable of absorbing infrared rays, at least that part of said envelope which surrounds said infrared ray absorbing tube portion being transparent to said rays.
  • an enclosure comprising a wall having a pumping tip integrally incorporated therein and extending into said enclosure, said tip having an end susceptible of being closed off by melting under the action of infra-red rays.
  • the invention provides a general method of closing ott a pumping or an exhaust tip of an envelope which, as the case may be, has been lled with a gas or evacuated. At least the end of the tip is made of glass and is placed within the envelope and before the latter is disconnected from the pumping ⁇ system is closed by melting it under the action of infra-red rays.
  • the glass must be such as to be capable of melting under the action of infrared rays.
  • colour glass must be used, for example a glass whose constituent oxydes have been at least partially and locally reduced.
  • at least a portion of the envelope concerned must be transparent to infra-red rays so that the latter may reach the tip without affecting the envelope.
  • FIGS. 1 and 2 are sectional views of two embodiments of the invention.
  • FIGS. 3 and 4 are similar views, on a larger scale, showing a detail
  • FIG. 5 shows a dry reed switch in the process of the evacuation thereof
  • FIG. 6 shows a terminated dry reed switch.
  • the envelope 1 of glass or metal a portion of which is shown in FIG. 1, has an extension in the form of a cylindrical solid of revolution 3 made of a material transparent to infra-red radiation.
  • This cylindrical portion comprises inside it a connector or exhaust tip 4 which is made of a glass compatible with the material of the cylinder 3.
  • the cylindrical part 3 may be connected, for the purpose of creating a vacuum within the envelope 1, to an exhaust piping 5 through the medium of a rubber connector 6.
  • the tip 4 is made as short as possible and has an adequate diameter. Its end inside the cylindrical part 3 will previously have been drawn to facilitate the closing otf of its orifice by local melting of the glass under the action of infra-red rays, schematically illustrated by the arrow IR.
  • Another advantage of the invention consists in the fact, when a filling is made by means of a gas or a vapour with a pressure above the atmospheric pressure, that both the internal and external walls of the tube 9 are submitted to the same pressure.
  • the cylindrical extension 3 of the enclosure is closed otf by a conventional flat bottom.
  • Lead throughs 7 have been also shown.
  • the exhaust tip 4 is in the form of a metal tube 8 of appropriate coefficient of expansion, at the internal end of which tube a tapered glass tip 9 has been bonded, this tip being designed to behave in the same way as described in the case of FIG. l.
  • the tip 4 has a tapered extremity and is of such a nature that it can be melted and closed ott under the action of infra-red rays. For example it has been darkened by reduction of the oxides contained in the glass.
  • the tip or its glass extension if the former is of metal can be made of coloured glass which absorbs infra-red radiation.
  • FIG. 3 illustrates how these elements are assembled at the levels which they are ultimately to occupy in relation to one another. They are of course appropriately supported by some suitable means (not shown in order not to overburden the drawing).
  • the local melting of the glass parts of said elements is carried out, for example by heating by means of a ring of gas burners, as schematically illustrated by the arrows f, in order to effect the simultaneous connection of said three elements.
  • the finished condition is illustrated in FIG. 4.
  • FIG. 5 shows a reed-type contact-breaker with two flexible reeds 11 and 12 bonded at the ends 13 and 14 of a transparent glass tube 15.
  • a metal exhaust tube 8 extends into the envelope at one of the ends of the envelope.
  • the metal tube is prolonged at its inner end by a glass tube 9 of substantially the same diameter, the body of which is coloured or the extremity of which has been coloured, for example by reduction of its constituent oxides, so as to make it possible to melt it under the action of infra-red rays.
  • the evacuation of the tube 15 takes place through the exhaust piping 5 mounted by means of a rubber connector 6. The procedure is in itself quite conventional.
  • the same reed-type switch is shown in FIG. 6 after the closing o of the extremity 16 of the tip 9 by melting by infra-red rays, schematically illustrated in FIG. 5 by the arrow IR.
  • the switch is then ready for use after the vaporisable annular getter 17, designed to absorb the residual gases or those liable t0 be liberated during the course of operation of the contact-breaker, has been vaporized, thus forming on the internal wall of the tube the well-known shiny coating 13 Which is capable of fixing gas molecules.
  • the getter is carried by the two branches 19a and 19h 0f a wire 19 which is soldered to the reed 11 prior to the bonding of said reed to the glass tube 15 at the end 13.
  • a method of making a dry reed switch comprising providing an elongated envelope containing two reed switch contact elements capable of making Contact with each other under the action of an external magnetic field,
  • said infrared rays being absorbed by said colored glass causing said colored glass to melt and close olf the free end portion of said glass tube to seal the envelope.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Glass Compositions (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
US00234918A 1969-07-15 1972-03-15 Method for making dry reed switches Expired - Lifetime US3749562A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6923999A FR2050279A1 (de) 1969-07-15 1969-07-15

Publications (1)

Publication Number Publication Date
US3749562A true US3749562A (en) 1973-07-31

Family

ID=9037428

Family Applications (1)

Application Number Title Priority Date Filing Date
US00234918A Expired - Lifetime US3749562A (en) 1969-07-15 1972-03-15 Method for making dry reed switches

Country Status (6)

Country Link
US (1) US3749562A (de)
JP (1) JPS5025304B1 (de)
DE (1) DE2034434C3 (de)
FR (1) FR2050279A1 (de)
GB (1) GB1284388A (de)
NL (1) NL7010482A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077871A (en) * 1975-04-14 1978-03-07 Occidental Petroleum Corporation Separation of colored particulate glass
US4220462A (en) * 1978-06-23 1980-09-02 Aladdin Industries, Incorporated Apparatus for making a vacuum insulated container
US4251252A (en) * 1978-06-23 1981-02-17 Aladdin Industries, Incorporated Method for making vacuum insulated container
US4661236A (en) * 1983-10-28 1987-04-28 Orion Research, Inc. Fluid electrode and method of making
US4961768A (en) * 1989-04-20 1990-10-09 Djeu Nicholas I Methods for bonding optical fibers to wafers
US5489321A (en) * 1994-07-14 1996-02-06 Midwest Research Institute Welding/sealing glass-enclosed space in a vacuum

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077871A (en) * 1975-04-14 1978-03-07 Occidental Petroleum Corporation Separation of colored particulate glass
US4220462A (en) * 1978-06-23 1980-09-02 Aladdin Industries, Incorporated Apparatus for making a vacuum insulated container
US4251252A (en) * 1978-06-23 1981-02-17 Aladdin Industries, Incorporated Method for making vacuum insulated container
US4661236A (en) * 1983-10-28 1987-04-28 Orion Research, Inc. Fluid electrode and method of making
US4961768A (en) * 1989-04-20 1990-10-09 Djeu Nicholas I Methods for bonding optical fibers to wafers
WO1990012762A1 (en) * 1989-04-20 1990-11-01 University Of South Florida Methods for bonding optical fibers to wafers
US5489321A (en) * 1994-07-14 1996-02-06 Midwest Research Institute Welding/sealing glass-enclosed space in a vacuum

Also Published As

Publication number Publication date
FR2050279A1 (de) 1971-04-02
DE2034434B2 (de) 1979-08-30
DE2034434C3 (de) 1980-05-14
GB1284388A (en) 1972-08-09
DE2034434A1 (de) 1971-01-28
JPS5025304B1 (de) 1975-08-22
NL7010482A (de) 1971-01-19

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Date Code Title Description
AS Assignment

Owner name: ALLIED CORPORATION, A CORP. OF NEW YORK, NEW JERSE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OREGA CIRCUITS ET COMMUNICATION, A CORP. OF FRANCE;REEL/FRAME:004546/0299

Effective date: 19860411

Owner name: ALLIED CORPORATION, MORRIS TOWNSHIP, NEW JERSEY A

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:OREGA CIRCUITS ET COMMUNICATION, A CORP. OF FRANCE;REEL/FRAME:004546/0299

Effective date: 19860411

AS Assignment

Owner name: CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK AGENC

Free format text: SECURITY INTEREST;ASSIGNOR:AMPHENOL CORPORATION;REEL/FRAME:004879/0030

Effective date: 19870515

AS Assignment

Owner name: AMPHENOL CORPORATION, A CORP. OF DE, ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALLIED CORPORATION, A CORP. OF NY;REEL/FRAME:004844/0850

Effective date: 19870602

Owner name: AMPHENOL CORPORATION, LISLE, ILLINOIS A CORP. OF D

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALLIED CORPORATION, A CORP. OF NY;REEL/FRAME:004844/0850

Effective date: 19870602

AS Assignment

Owner name: AMPHENOL CORPORATION A CORP. OF DELAWARE

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CANADIAN IMPERIAL BANK OF COMMERCE;REEL/FRAME:006147/0887

Effective date: 19911114