CA1020512A - Method and apparatus for centering a luminaire support - Google Patents
Method and apparatus for centering a luminaire supportInfo
- Publication number
- CA1020512A CA1020512A CA191,627A CA191627A CA1020512A CA 1020512 A CA1020512 A CA 1020512A CA 191627 A CA191627 A CA 191627A CA 1020512 A CA1020512 A CA 1020512A
- Authority
- CA
- Canada
- Prior art keywords
- centering
- luminaire support
- luminaire
- support
- 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
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/36—Hoisting or lowering devices, e.g. for maintenance
- F21V21/38—Hoisting or lowering devices, e.g. for maintenance with a cable
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00329514A US3847333A (en) | 1973-02-05 | 1973-02-05 | Method and apparatus for centering a luminaire support |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1020512A true CA1020512A (en) | 1977-11-08 |
Family
ID=23285783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA191,627A Expired CA1020512A (en) | 1973-02-05 | 1974-02-04 | Method and apparatus for centering a luminaire support |
Country Status (3)
Country | Link |
---|---|
US (1) | US3847333A (en) |
CA (1) | CA1020512A (en) |
ZA (1) | ZA74590B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4043910A (en) * | 1974-09-10 | 1977-08-23 | Allied Colloids Limited | Removal of phosphorous from waste water |
US3977639A (en) * | 1975-06-16 | 1976-08-31 | Johns-Manville Corporation | Free fall safety assembly for use with a luminaire raise-lower apparatus |
US4092707A (en) * | 1976-11-08 | 1978-05-30 | Millerbernd Paul A | High level light supporting and light lowering means |
US4348717A (en) * | 1977-07-25 | 1982-09-07 | General Electric Company | Luminaire lowering device with centering means |
US4661894A (en) * | 1984-08-31 | 1987-04-28 | Metaltec Corporation | Stabilizing device for luminaire support ring |
US20050052876A1 (en) * | 2003-09-10 | 2005-03-10 | Halverson Rex W. | Umbrella mounted chandelier |
US7393124B1 (en) * | 2005-05-04 | 2008-07-01 | Kenneth Riley Williams | Architectural mast-mounted support system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1898074A (en) * | 1930-08-21 | 1933-02-21 | Carol Supplies Inc | Antifriction bearing |
US3555689A (en) * | 1968-12-19 | 1971-01-19 | Schlumberger Technology Corp | Centralizing and well-calipering apparatus for well tools |
US3633980A (en) * | 1970-04-15 | 1972-01-11 | Ametek Inc | Support bearing |
US3670159A (en) * | 1970-05-13 | 1972-06-13 | Paul A Millerbernd | High level light pale including means for lowering lights for servicing |
-
1973
- 1973-02-05 US US00329514A patent/US3847333A/en not_active Expired - Lifetime
-
1974
- 1974-01-29 ZA ZA740590A patent/ZA74590B/en unknown
- 1974-02-04 CA CA191,627A patent/CA1020512A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU6509274A (en) | 1975-08-07 |
US3847333A (en) | 1974-11-12 |
ZA74590B (en) | 1974-12-24 |
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