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 breakageInfo
- 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
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
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).
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)
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)
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 |
-
1978
- 1978-08-11 FR FR7823675A patent/FR2432990A1/en active Granted
Patent Citations (7)
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)
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
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |