GB1473815A - Flash lamps - Google Patents

Flash lamps

Info

Publication number
GB1473815A
GB1473815A GB945675A GB945675A GB1473815A GB 1473815 A GB1473815 A GB 1473815A GB 945675 A GB945675 A GB 945675A GB 945675 A GB945675 A GB 945675A GB 1473815 A GB1473815 A GB 1473815A
Authority
GB
United Kingdom
Prior art keywords
combustible material
bulb
leads
opening
march
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
GB945675A
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
Publication of GB1473815A publication Critical patent/GB1473815A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

1473815 Flash-bulbs GENERAL ELECTRIC CO 6 March 1975 [21 March 1974] 9456/75 Heading G2L A non-filament flash-bulb has leads 13, 14 extending into the bulb through a pinch seal and into an insulating, e.g. glass member 18 within the bulb, member 18 having an opening 19 therethrough located between and in communication with leads 13, 14 the opening being filled with priming material electrically bridging the leads for igniting combustible material within the bulb. The arrangement is such that the combustible material cannot short-circuit the leads, the former on ignition is ejected from the opening 19 and contact between partially burned combustible material and the wire ends is minimized. To the latter end, the opening may be of narrower cross-section at the end facing the combustible material, Figs. 7 to 9 (not shown). Short circuiting by debris may also be prevented by an insulating sleeve round one lead wire, Fig. 5 (not shown) or the member 18 may extend downwardly and partially around the lead wires, Fig. 6 (not shown). One lead wire may extend into contact with the combustible material, providing earthing and minimizing the likelihood of electrostatic ignition, Fig. 4 (not shown).
GB945675A 1974-03-21 1975-03-06 Flash lamps Expired GB1473815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US453487A US3884615A (en) 1974-03-21 1974-03-21 Flash Lamp Mount Construction

Publications (1)

Publication Number Publication Date
GB1473815A true GB1473815A (en) 1977-05-18

Family

ID=23800761

Family Applications (1)

Application Number Title Priority Date Filing Date
GB945675A Expired GB1473815A (en) 1974-03-21 1975-03-06 Flash lamps

Country Status (11)

Country Link
US (1) US3884615A (en)
JP (1) JPS50126413A (en)
AR (1) AR204195A1 (en)
BE (1) BE827007A (en)
BR (1) BR7501292A (en)
CA (1) CA1021587A (en)
FR (1) FR2265033B1 (en)
GB (1) GB1473815A (en)
IT (1) IT1034418B (en)
NL (1) NL7501984A (en)
SU (1) SU583779A3 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128858A (en) * 1975-04-14 1978-12-05 General Electric Company Multiple flashlamp system
US4040777A (en) * 1975-04-28 1977-08-09 General Electric Company Flash lamp array having shorting lamps
US4041300A (en) * 1975-10-28 1977-08-09 General Electric Company Photoflash array with discharge path for electrostatic charges
US4105392A (en) * 1975-11-20 1978-08-08 Gte Sylvania Incorporated Photoflash lamp
US4008040A (en) * 1975-11-24 1977-02-15 Gte Sylvania Incorporated Photoflash lamp and method of making same
US4049369A (en) * 1975-12-29 1977-09-20 Gte Sylvania Incorporated Photoflash lamp and multilamp unit with electrostatic protection
US4059389A (en) * 1976-09-07 1977-11-22 Gte Sylvania Incorporated Photoflash lamp and method of making same
US4082494A (en) * 1976-12-08 1978-04-04 Gte Sylvania Incorporated Photoflash lamp
NL7806572A (en) * 1977-12-23 1979-06-26 Philips Nv COMBUSTION FLASHLIGHT.
NL7806616A (en) * 1978-06-20 1979-12-27 Philips Nv COMBUSTION FLASHLIGHT.
US4229161A (en) * 1979-01-02 1980-10-21 Gte Products Corporation Photoflash lamp and method of making
NL7903500A (en) * 1979-05-04 1980-11-06 Philips Nv COMBUSTION FLASHLIGHT AND FLASH APPARATUS INCLUDING SEVERAL COMBUSTION FLASHLIGHTS.
CA1160677A (en) * 1980-07-21 1984-01-17 Donald E. Armstrong Method of making electrically-activated photoflash lamp with improved sealed end portion
US4369556A (en) * 1980-07-21 1983-01-25 Gte Products Corporation Method of making a photoflash lamp having new lead seal structure
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
US4696641A (en) * 1986-08-11 1987-09-29 Gte Products Corporation Primer material and photoflash lamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768957A (en) * 1971-09-21 1973-10-30 Philips Corp Flash bulb
BE795646A (en) * 1972-02-19 1973-08-20 Philips Nv COMBUSTION FLASH LAMP

Also Published As

Publication number Publication date
DE2504188A1 (en) 1975-10-02
AR204195A1 (en) 1975-11-28
BR7501292A (en) 1975-12-16
FR2265033B1 (en) 1977-11-25
US3884615A (en) 1975-05-20
NL7501984A (en) 1975-09-23
FR2265033A1 (en) 1975-10-17
BE827007A (en) 1975-07-16
JPS50126413A (en) 1975-10-04
DE2504188B2 (en) 1977-03-31
IT1034418B (en) 1979-09-10
SU583779A3 (en) 1977-12-05
CA1021587A (en) 1977-11-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee