GB807133A - Improvements in or relating to lighting devices comprising a part made of glass - Google Patents

Improvements in or relating to lighting devices comprising a part made of glass

Info

Publication number
GB807133A
GB807133A GB3071/56A GB307156A GB807133A GB 807133 A GB807133 A GB 807133A GB 3071/56 A GB3071/56 A GB 3071/56A GB 307156 A GB307156 A GB 307156A GB 807133 A GB807133 A GB 807133A
Authority
GB
United Kingdom
Prior art keywords
glass
silicone
lighting devices
muffle furnace
fittings
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
GB3071/56A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB807133A publication Critical patent/GB807133A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/08—Vessels; Containers; Shields associated therewith; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings

Landscapes

  • Surface Treatment Of Glass (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

807,133. Electric lamps; lighting fittings. PHILIPS ELECTRICAL INDUSTRIES Ltd. Jan. 31, 1956 [Feb. 2,1955], No. 3071/56. Drawings to Specification. Classes 39(2) and 75(2) [Also in Group XL(a)] Lighting devices such as electric lamp bulbs or discharge tubes, light emitting fittings, and ultralviolet radiators, are made of soft glass which will withstand a temperature of more than 150 ‹C. during the operation of the device and are protected against albrupt variations in stress, due to contact with rain or moisture while hot, by coating the glass with a light-pervious layer of silicone lacquer of a thickness of more than 15u, preferably more than 20u, the coated surface being subsequently heat treated in a muffle furnace. A coating composition of silicone lacquer and a plasticizer such as a silicone resin or silicone grease may be used. The subsequent heat treatment in a muffle furnace is effected at a temperature of, for example, 225‹C.
GB3071/56A 1955-02-02 1956-01-31 Improvements in or relating to lighting devices comprising a part made of glass Expired GB807133A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL344780X 1955-02-02

Publications (1)

Publication Number Publication Date
GB807133A true GB807133A (en) 1959-01-07

Family

ID=19784848

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3071/56A Expired GB807133A (en) 1955-02-02 1956-01-31 Improvements in or relating to lighting devices comprising a part made of glass

Country Status (3)

Country Link
CH (1) CH344780A (en)
DE (1) DE1027603B (en)
GB (1) GB807133A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102049A (en) * 1960-03-16 1963-08-27 Sylvania Electric Prod Process of coating the exterior surface of a fluorescent lamp envelope with silicone resins
US3127295A (en) * 1964-03-31 Method of bonding light transmitting yarn to an

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE880692C (en) * 1951-09-05 1953-06-22 Patra Patent Treuhand Flash lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127295A (en) * 1964-03-31 Method of bonding light transmitting yarn to an
US3102049A (en) * 1960-03-16 1963-08-27 Sylvania Electric Prod Process of coating the exterior surface of a fluorescent lamp envelope with silicone resins

Also Published As

Publication number Publication date
DE1027603B (en) 1958-04-10
CH344780A (en) 1960-02-29

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