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FR2432990A1 - Safety catch for suspension system of overhead floodlight - includes spring loaded pulley which grips cable in event of breakage - Google Patents

Safety catch for suspension system of overhead floodlight - includes spring loaded pulley which grips cable in event of breakage

Info

Publication number
FR2432990A1
FR2432990A1 FR7823675A FR7823675A FR2432990A1 FR 2432990 A1 FR2432990 A1 FR 2432990A1 FR 7823675 A FR7823675 A FR 7823675A FR 7823675 A FR7823675 A FR 7823675A FR 2432990 A1 FR2432990 A1 FR 2432990A1
Authority
FR
France
Prior art keywords
pulley
floodlight
breakage
overhead
event
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.)
Granted
Application number
FR7823675A
Other languages
French (fr)
Other versions
FR2432990B1 (en
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.)
Eclairage Tech
Original Assignee
Eclairage Tech
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 Eclairage Tech filed Critical Eclairage Tech
Priority to FR7823675A priority Critical patent/FR2432990A1/en
Publication of FR2432990A1 publication Critical patent/FR2432990A1/en
Application granted granted Critical
Publication of FR2432990B1 publication Critical patent/FR2432990B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
    • B66D3/10—Applications of braking or detent devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Cable Installation (AREA)

Abstract

Flood lights (P) are fixed to an arm (2) which is supported by a mast (1). The arm (2) can be raised or lowered by a cable (5) joined to two separate cables (3) which pass over pulleys in a pulley block (6) fixed to the mast (1). The pulley spindle runs in slots in the side plates of the pulley block (6) and is forced upwards by springs (15). The weight, of the arm (1) normally overcomes the force of the springs (15), but if one of the cables (3, 5) break, the pulley is forced upwards against a brake block which grips the cable (3) and so supports the arm (1).
FR7823675A 1978-08-11 1978-08-11 Safety catch for suspension system of overhead floodlight - includes spring loaded pulley which grips cable in event of breakage Granted FR2432990A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7823675A FR2432990A1 (en) 1978-08-11 1978-08-11 Safety catch for suspension system of overhead floodlight - includes spring loaded pulley which grips cable in event of breakage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7823675A FR2432990A1 (en) 1978-08-11 1978-08-11 Safety catch for suspension system of overhead floodlight - includes spring loaded pulley which grips cable in event of breakage

Publications (2)

Publication Number Publication Date
FR2432990A1 true FR2432990A1 (en) 1980-03-07
FR2432990B1 FR2432990B1 (en) 1980-12-26

Family

ID=9211778

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7823675A Granted FR2432990A1 (en) 1978-08-11 1978-08-11 Safety catch for suspension system of overhead floodlight - includes spring loaded pulley which grips cable in event of breakage

Country Status (1)

Country Link
FR (1) FR2432990A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015010A1 (en) * 1989-06-09 1990-12-13 Keith Riley Improvements relating to self-levelling devices

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR496736A (en) * 1919-03-08 1919-11-14 J Defawe Et Cie Soc Safety pulley
GB154470A (en) * 1919-12-30 1920-12-02 Ane Pieter Schat Improvements in and relating to means for lowering a load
US1408273A (en) * 1920-11-11 1922-02-28 Charles E Davis Tackle block
FR692999A (en) * 1930-03-29 1930-11-13 Rope or cable lifting pulley with automatic stop device
FR716709A (en) * 1931-05-07 1931-12-26 Pulley with automatic load immobilization
US2276767A (en) * 1939-10-26 1942-03-17 George G Morin Safety pulley block
US2780318A (en) * 1955-10-11 1957-02-05 Roy A Owens Safety block

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR496736A (en) * 1919-03-08 1919-11-14 J Defawe Et Cie Soc Safety pulley
GB154470A (en) * 1919-12-30 1920-12-02 Ane Pieter Schat Improvements in and relating to means for lowering a load
US1408273A (en) * 1920-11-11 1922-02-28 Charles E Davis Tackle block
FR692999A (en) * 1930-03-29 1930-11-13 Rope or cable lifting pulley with automatic stop device
FR716709A (en) * 1931-05-07 1931-12-26 Pulley with automatic load immobilization
US2276767A (en) * 1939-10-26 1942-03-17 George G Morin Safety pulley block
US2780318A (en) * 1955-10-11 1957-02-05 Roy A Owens Safety block

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015010A1 (en) * 1989-06-09 1990-12-13 Keith Riley Improvements relating to self-levelling devices

Also Published As

Publication number Publication date
FR2432990B1 (en) 1980-12-26

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Legal Events

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