GB2107667B - Lamp suspension - Google Patents

Lamp suspension

Info

Publication number
GB2107667B
GB2107667B GB8131601A GB8131601A GB2107667B GB 2107667 B GB2107667 B GB 2107667B GB 8131601 A GB8131601 A GB 8131601A GB 8131601 A GB8131601 A GB 8131601A GB 2107667 B GB2107667 B GB 2107667B
Authority
GB
United Kingdom
Prior art keywords
take
sensor lever
wires
lamp suspension
recess
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
GB8131601A
Other versions
GB2107667A (en
Inventor
Hiroyuki Suzuki
Kazuo Kishida
Karl Ernst Maslo
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.)
RYUDENSHA KK
Original Assignee
RYUDENSHA KK
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
Priority to FR8119549A priority Critical patent/FR2514863B1/en
Application filed by RYUDENSHA KK filed Critical RYUDENSHA KK
Priority to GB8131601A priority patent/GB2107667B/en
Publication of GB2107667A publication Critical patent/GB2107667A/en
Application granted granted Critical
Publication of GB2107667B publication Critical patent/GB2107667B/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
    • F21V21/14—Adjustable mountings
    • F21V21/22—Adjustable mountings telescopic
    • 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
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • F21S8/063—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension with a rigid pendant, i.e. a pipe or rod
    • 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
    • F21V21/14—Adjustable mountings
    • F21V21/16—Adjustable mountings using wires or cords
    • 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
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)

Abstract

A lamp suspension system for telescopically adjusting a lamp suspension assembly by means of flat wires comprises a take-up means for winding or unwinding the wires. A sensor lever (232) which is swingably mounted above and biassed towards the take-up means has pawls (236, 237) that are engaged with a ratchet wheel (208) fixed to the take-up means when the sensor lever (232) is swung toward the take-up means. A pulley (239) at an end of the sensor lever (232) engages the wires and a limit switch (242) detects any swinging motion of the sensor lever in the direction away from the take-up means to arrest rotation thereof. An unwinding sensor lever (252) swingably mounted below, and biassed towards the take-up means has a roller which contacts an outer edge of the take-up means and also has a pawl (258) engageable with the ratchet wheel (208) when the roller is engaged in a recess (217) at the outer edge of the take up means, once a slider member has unblocked the recess. <IMAGE>
GB8131601A 1981-10-16 1981-10-20 Lamp suspension Expired GB2107667B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8119549A FR2514863B1 (en) 1981-10-16 1981-10-16 SUSPENSION SYSTEM, PARTICULARLY FOR A LIGHTING DEVICE
GB8131601A GB2107667B (en) 1981-10-16 1981-10-20 Lamp suspension

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8119549A FR2514863B1 (en) 1981-10-16 1981-10-16 SUSPENSION SYSTEM, PARTICULARLY FOR A LIGHTING DEVICE
GB8131601A GB2107667B (en) 1981-10-16 1981-10-20 Lamp suspension

Publications (2)

Publication Number Publication Date
GB2107667A GB2107667A (en) 1983-05-05
GB2107667B true GB2107667B (en) 1985-05-01

Family

ID=26222579

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8131601A Expired GB2107667B (en) 1981-10-16 1981-10-20 Lamp suspension

Country Status (2)

Country Link
FR (1) FR2514863B1 (en)
GB (1) GB2107667B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29806582U1 (en) * 1998-04-14 1998-06-04 Spectral Gesellschaft für Lichttechnik mbH, 79111 Freiburg Pendant light
KR102712924B1 (en) * 2019-08-12 2024-10-07 더 윌-버트 컴파니 Inverted Cable Driven Mast

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE639711A (en) *
US3182961A (en) * 1961-04-07 1965-05-11 Le Bus Royalty Company Combined fleet angle compensator and braking apparatus
DE1230531B (en) * 1965-04-10 1966-12-15 Dornier System Gmbh Braking device for cable winches, especially in air target towing systems
FR1444951A (en) * 1965-05-28 1966-07-08 Safety device on lifting winch

Also Published As

Publication number Publication date
FR2514863B1 (en) 1986-03-28
FR2514863A1 (en) 1983-04-22
GB2107667A (en) 1983-05-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19981020