CA1020512A - Method and apparatus for centering a luminaire support - Google Patents

Method and apparatus for centering a luminaire support

Info

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
Application number
CA191,627A
Inventor
Robert D. Zeller
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.)
Johns Manville Corp
Original Assignee
Johns Manville Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23285783&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA1020512(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Johns Manville Corp filed Critical Johns Manville Corp
Application granted granted Critical
Publication of CA1020512A publication Critical patent/CA1020512A/en
Expired legal-status Critical Current

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)
CA191,627A 1973-02-05 1974-02-04 Method and apparatus for centering a luminaire support Expired CA1020512A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
ZA74590B (en) 1974-12-24
US3847333A (en) 1974-11-12
AU6509274A (en) 1975-08-07

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