GB641339A - Electric lighting units of the lay-light type - Google Patents

Electric lighting units of the lay-light type

Info

Publication number
GB641339A
GB641339A GB23281/48A GB2328148A GB641339A GB 641339 A GB641339 A GB 641339A GB 23281/48 A GB23281/48 A GB 23281/48A GB 2328148 A GB2328148 A GB 2328148A GB 641339 A GB641339 A GB 641339A
Authority
GB
United Kingdom
Prior art keywords
contacts
lamp
lay
casing
lighting units
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
GB23281/48A
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.)
HAROLD EDGAR BELLCHAMBERS
JOHN NEVILLE HULL
British Thomson Houston Co Ltd
Original Assignee
HAROLD EDGAR BELLCHAMBERS
JOHN NEVILLE HULL
British Thomson Houston Co 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 HAROLD EDGAR BELLCHAMBERS, JOHN NEVILLE HULL, British Thomson Houston Co Ltd filed Critical HAROLD EDGAR BELLCHAMBERS
Priority to GB23281/48A priority Critical patent/GB641339A/en
Publication of GB641339A publication Critical patent/GB641339A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0075—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/37—U-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

641,339. Two-part couplings. BRITISH THOMSON - HOUSTON CO., Ltd., HULL, J. N., BELLCHAMBERS, H. E., and RUFF, H. R. Sept. 3, 1948, No. 23281. [Class 38 (i)] [Also in Group XI] A plugging contact device, for completing the electrical connection between a fluorescent lamp 4 and the supply circuit therefor when the casing 3 enclosing the lamp is assembled in a supporting framework 1, comprises an insulated blade 15 fixed to the cover 5 and having contacts 16, one on each side thereof, connected to the primary winding of the transformer 6 supplying the tubular fluorescent lamp 4, the contacts 16 being adapted to engage supply contacts 17. One of the latter contacts is spring-pressed towards the other so that when the casing 5 is detached from the framework 1 the two contacts engage, so that if a number of transformers 6 (each associated with a lamp 4) are connected in series, the series circuit is not broken when a fitting is removed for inspection or repair.
GB23281/48A 1948-09-03 1948-09-03 Electric lighting units of the lay-light type Expired GB641339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB23281/48A GB641339A (en) 1948-09-03 1948-09-03 Electric lighting units of the lay-light type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23281/48A GB641339A (en) 1948-09-03 1948-09-03 Electric lighting units of the lay-light type

Publications (1)

Publication Number Publication Date
GB641339A true GB641339A (en) 1950-08-09

Family

ID=10193123

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23281/48A Expired GB641339A (en) 1948-09-03 1948-09-03 Electric lighting units of the lay-light type

Country Status (1)

Country Link
GB (1) GB641339A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503329A1 (en) * 1981-03-31 1982-10-08 Kaiser Gmbh Co Leuchten Kg Lic DOWNLIGHTING LIGHTING APPARATUS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503329A1 (en) * 1981-03-31 1982-10-08 Kaiser Gmbh Co Leuchten Kg Lic DOWNLIGHTING LIGHTING APPARATUS

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