GB560776A - Improvements in or relating to flashlight lamps - Google Patents

Improvements in or relating to flashlight lamps

Info

Publication number
GB560776A
GB560776A GB630541A GB630541A GB560776A GB 560776 A GB560776 A GB 560776A GB 630541 A GB630541 A GB 630541A GB 630541 A GB630541 A GB 630541A GB 560776 A GB560776 A GB 560776A
Authority
GB
United Kingdom
Prior art keywords
envelope
combustible
gas
lamps
organic material
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
GB630541A
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
Priority to GB630541A priority Critical patent/GB560776A/en
Publication of GB560776A publication Critical patent/GB560776A/en
Priority to DEP26547D priority patent/DE804757C/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)
  • Discharge Lamp (AREA)

Abstract

560,776. Flash lamps. PHILIPS LAMPS, Ltd., and BOER, J. H. DE. July 15, 1942, No. 6305/41. [Class 9 (ii)] A photographic flash lamp comprising an envelope, a filling material of combustible foil, wire; or powder, a gas capable of reacting with the combustible material and means for initiating the combustion, has the envelope formed of at least two layers of transparent or translucent organic material, one of the layers consisting of regenerated cellulose. The envelope may be provided with ribs to increase its resistance to deformation and the gas, which is at a greater pressure than one atmosphere, may be diluted with a non-combustible gas. The organic material for the envelope may be cellulose acetate, polyvinyl chloride, urea formaldehyde resin, polyacrylic acid or ethers, or polyvinyl ether. Specification 547,031 is referred to.
GB630541A 1942-07-15 1942-07-15 Improvements in or relating to flashlight lamps Expired GB560776A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB630541A GB560776A (en) 1942-07-15 1942-07-15 Improvements in or relating to flashlight lamps
DEP26547D DE804757C (en) 1942-07-15 1948-12-24 Flash lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB630541A GB560776A (en) 1942-07-15 1942-07-15 Improvements in or relating to flashlight lamps

Publications (1)

Publication Number Publication Date
GB560776A true GB560776A (en) 1944-04-20

Family

ID=9812075

Family Applications (1)

Application Number Title Priority Date Filing Date
GB630541A Expired GB560776A (en) 1942-07-15 1942-07-15 Improvements in or relating to flashlight lamps

Country Status (2)

Country Link
DE (1) DE804757C (en)
GB (1) GB560776A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868670A (en) * 1954-02-13 1959-01-13 Philips Corp Flash lamp coating process
DE1037854B (en) * 1954-04-07 1958-08-28 Gen Electric Flash lamp
DE1237433B (en) * 1957-10-21 1967-03-23 Patra Patent Treuhand Flash lamp

Also Published As

Publication number Publication date
DE804757C (en) 1951-04-30

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