GB668693A - Louvre construction - Google Patents
Louvre constructionInfo
- Publication number
- GB668693A GB668693A GB10569/50A GB1056950A GB668693A GB 668693 A GB668693 A GB 668693A GB 10569/50 A GB10569/50 A GB 10569/50A GB 1056950 A GB1056950 A GB 1056950A GB 668693 A GB668693 A GB 668693A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tab
- base
- reflector
- recess
- april
- 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
Links
Classifications
-
- 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
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
-
- 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
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
668,693. Tubular-lamp fittings. SYLVANIA ELECTRIC PRODUCTS, Inc. April 28, 1950 [April 29, 1949], No. 10569/50. Class 75(iv) A louvre for tubular - lamp fittings comprises a central longitudinal V-section reflector 1 formed with a plurality of spaced transverse slots 3 extending upwardly from its apex to receive transverse slats 2 each of which has at lease one securing tab 8 extending through the reflector and bent down thereon. As shown each slat 2 has a central recess 6 the side edges of which conform with and embrace the walls of the reflector 1 above the upper edges of the slots 3. The base of the recess 6 is formed with the tab 8 which extends substantially the full width thereof and the base of which has a slot 14 to facilitate bending of the tab on assembly. The tab 8 may be formed by slightly undercutting the base of the recess 6 along the lines of the side edges.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US668693XA | 1949-04-29 | 1949-04-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB668693A true GB668693A (en) | 1952-03-19 |
Family
ID=22072226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10569/50A Expired GB668693A (en) | 1949-04-29 | 1950-04-28 | Louvre construction |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB668693A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2967337A (en) * | 1959-11-25 | 1961-01-10 | Midland Ross Corp | Louver construction |
EP0522480A1 (en) * | 1991-07-08 | 1993-01-13 | Ab Fagerhult | Electric light fitting with anti-dazzle screen and method of producing such anti-dazzle screen |
EP0528198A2 (en) * | 1991-08-21 | 1993-02-24 | ZUMTOBEL LICHT GmbH | Strip for securing a folded sheet to a strip louvre |
GB2300470A (en) * | 1995-04-03 | 1996-11-06 | Louvre Company Limited The | A reflector unit for a light fitting |
GB2341669A (en) * | 1998-09-15 | 2000-03-22 | Interlux Limited | Light controller for light fitting |
DE10322779A1 (en) * | 2003-05-19 | 2005-01-05 | Trilux-Lenze Gmbh + Co Kg | Electrical lighting unit has a pattern of elements formed by laminate elements set into a reflector frame having output regions |
-
1950
- 1950-04-28 GB GB10569/50A patent/GB668693A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2967337A (en) * | 1959-11-25 | 1961-01-10 | Midland Ross Corp | Louver construction |
EP0522480A1 (en) * | 1991-07-08 | 1993-01-13 | Ab Fagerhult | Electric light fitting with anti-dazzle screen and method of producing such anti-dazzle screen |
EP0528198A2 (en) * | 1991-08-21 | 1993-02-24 | ZUMTOBEL LICHT GmbH | Strip for securing a folded sheet to a strip louvre |
EP0528198A3 (en) * | 1991-08-21 | 1993-09-01 | Zumtobel Licht Gmbh | Strip for securing a folded sheet to a strip louvre |
GB2300470A (en) * | 1995-04-03 | 1996-11-06 | Louvre Company Limited The | A reflector unit for a light fitting |
GB2341669A (en) * | 1998-09-15 | 2000-03-22 | Interlux Limited | Light controller for light fitting |
DE10322779A1 (en) * | 2003-05-19 | 2005-01-05 | Trilux-Lenze Gmbh + Co Kg | Electrical lighting unit has a pattern of elements formed by laminate elements set into a reflector frame having output regions |
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