ES371886A1 - Photoflash lamp - Google Patents

Photoflash lamp

Info

Publication number
ES371886A1
ES371886A1 ES371886A ES371886A ES371886A1 ES 371886 A1 ES371886 A1 ES 371886A1 ES 371886 A ES371886 A ES 371886A ES 371886 A ES371886 A ES 371886A ES 371886 A1 ES371886 A1 ES 371886A1
Authority
ES
Spain
Prior art keywords
conductors
ignition
mass
metal
recess
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
ES371886A
Other languages
Spanish (es)
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 ES371886A1 publication Critical patent/ES371886A1/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K5/00—Light sources using charges of combustible material, e.g. illuminating flash devices
    • F21K5/02—Light sources using charges of combustible material, e.g. illuminating flash devices ignited in a non-disrupting container, e.g. photo-flash bulb

Abstract

In a flash-bulb having current conductors spaced apart by an insulating member, the member has a recess therein having an ignition mass and the ends of the conductors therein and also there is provided means for keeping a mass of oxidizable metal away from the conductors so that the conductors ignite the ignition mass rather than the metal. In one embodiment the ignition mass 11 comprising zirconium, red phosphorus, potassium perchlorate and lanthanum tin cobaltite in nitrocellulose, is located in the recess 17 of the base of the lamp. The ridge 23 is provided to keep the oxidizable metal 3 away from the ignition mass. In an alternative embodiment Fig.2 (not shown) the ignition mass 11 is located in a recess in a bead (9) which is held inside the lamp envelope by the conductors. In this embodiment and another Fig.3 (not shown) a glass tube (19) may surround the conductors. In another embodiment Fig.5 (not shown) the distance through the ignition mass separating the ends of the conductors is smaller than the distance between the end of a conductor and the oxidizable metal thereby preventing premature ignition of the metal.
ES371886A 1968-09-27 1969-09-25 Photoflash lamp Expired ES371886A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6813921A NL6813921A (en) 1968-09-27 1968-09-27

Publications (1)

Publication Number Publication Date
ES371886A1 true ES371886A1 (en) 1971-11-16

Family

ID=19804780

Family Applications (1)

Application Number Title Priority Date Filing Date
ES371886A Expired ES371886A1 (en) 1968-09-27 1969-09-25 Photoflash lamp

Country Status (6)

Country Link
US (1) US3602619A (en)
BE (1) BE739405A (en)
ES (1) ES371886A1 (en)
FR (1) FR2019052A1 (en)
GB (1) GB1238170A (en)
NL (1) NL6813921A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752636A (en) * 1970-11-27 1973-08-14 Philips Corp Photoflash lamp
US3768957A (en) * 1971-09-21 1973-10-30 Philips Corp Flash bulb
US3972673A (en) * 1974-09-23 1976-08-03 General Electric Company Photoflash lamp
US3969067A (en) * 1975-03-12 1976-07-13 General Electric Company Photoflash lamp
US4128858A (en) * 1975-04-14 1978-12-05 General Electric Company Multiple flashlamp system
US4097220A (en) * 1976-09-16 1978-06-27 General Electric Company Flash lamp array having shorting lamps
US4249887A (en) * 1977-12-30 1981-02-10 Westinghouse Electric Corp. Photoflash lamp having gap-fire ignition mount, and method of making the mount
US4314394A (en) * 1978-12-21 1982-02-09 Gte Products Corporation Photoflash lamp construction and method of making same
US4270897A (en) * 1978-12-21 1981-06-02 Gte Products Corporation Photoflash lamp construction and method of making same
US4229161A (en) * 1979-01-02 1980-10-21 Gte Products Corporation Photoflash lamp and method of making
US4457700A (en) * 1980-07-21 1984-07-03 Gte Products Corporation Electrically-activated photoflash lamp excluding a press-sealed end portion
US4381915A (en) * 1981-03-27 1983-05-03 Gte Products Corporation Filament-type lamp primer and fabrication process
US4403973A (en) * 1981-06-04 1983-09-13 Gte Products Corporation Photoflash lamp structure and fabrication process
US4432725A (en) * 1982-05-20 1984-02-21 Gte Products Corporation Subminiature flashlamp mount design
US4445847A (en) * 1982-05-26 1984-05-01 Gte Products Corporation Photoflash lamp
US4659308A (en) * 1985-12-10 1987-04-21 Gte Products Corporation Photoflash lamp with improved primer
US4614494A (en) * 1985-12-10 1986-09-30 Gte Products Corporation Primer insulating base
KR101300157B1 (en) * 2009-12-28 2013-08-26 주식회사 포스코 Composite ceramic contact material for solid oxide fuel cell and method of preparing ceramic contact material

Also Published As

Publication number Publication date
FR2019052A1 (en) 1970-06-26
DE1948089B2 (en) 1976-07-29
BE739405A (en) 1970-03-25
GB1238170A (en) 1971-07-07
NL6813921A (en) 1970-04-01
US3602619A (en) 1971-08-31
DE1948089A1 (en) 1970-04-02

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