IT995774B - INDICATOR AND WARNING SYSTEM FOR CONTINUOUS INDICATION OF THE OPERATING RADIUS AND LENGTH OF THE ARM OF A CRANE - Google Patents
INDICATOR AND WARNING SYSTEM FOR CONTINUOUS INDICATION OF THE OPERATING RADIUS AND LENGTH OF THE ARM OF A CRANEInfo
- Publication number
- IT995774B IT995774B IT29986/73A IT2998673A IT995774B IT 995774 B IT995774 B IT 995774B IT 29986/73 A IT29986/73 A IT 29986/73A IT 2998673 A IT2998673 A IT 2998673A IT 995774 B IT995774 B IT 995774B
- Authority
- IT
- Italy
- Prior art keywords
- crane
- indicator
- arm
- length
- warning system
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
- B66C23/905—Devices for indicating or limiting lifting moment electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
- B66C2700/084—Protection measures
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00297062A US3833932A (en) | 1972-10-12 | 1972-10-12 | Boom length operating radius indicator and warning device |
Publications (1)
Publication Number | Publication Date |
---|---|
IT995774B true IT995774B (en) | 1975-11-20 |
Family
ID=23144698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT29986/73A IT995774B (en) | 1972-10-12 | 1973-10-10 | INDICATOR AND WARNING SYSTEM FOR CONTINUOUS INDICATION OF THE OPERATING RADIUS AND LENGTH OF THE ARM OF A CRANE |
Country Status (5)
Country | Link |
---|---|
US (1) | US3833932A (en) |
CA (1) | CA1000856A (en) |
DE (1) | DE2350904A1 (en) |
FR (1) | FR2202842B1 (en) |
IT (1) | IT995774B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2400310C3 (en) * | 1974-01-04 | 1981-02-26 | Erhard 5509 Kell Kirsten | Tilting moment protection for a telescopic jib crane |
US3922789A (en) * | 1974-12-11 | 1975-12-02 | Koehring Co | Boom length sensing system with two-block condition sensing |
US3993166A (en) * | 1975-04-29 | 1976-11-23 | Bofors America, Inc. | Overload signalling system for fork lift trucks and the like |
US3997071A (en) * | 1975-08-14 | 1976-12-14 | Laserplane Corporation | Method and apparatus for indicating effective digging depth of a backhoe |
US4054055A (en) * | 1976-08-06 | 1977-10-18 | Precilec | Device for controlling the load of a lifting appliance |
US4205308A (en) * | 1977-11-21 | 1980-05-27 | Fmc Corporation | Programmable alarm system for marine loading arms |
EP0029768B1 (en) * | 1979-11-12 | 1986-04-23 | FMC EUROPE S.A. Société anonyme dite: | Process and apparatus for watching and controlling an articulated fluid-transfer arm for linking a ship to a platform in the sea |
USRE32366E (en) * | 1980-06-30 | 1987-03-03 | Jlg Industries, Inc. | Boom limit safety control circuit |
US4395706A (en) * | 1980-06-30 | 1983-07-26 | Jlg Industries, Inc. | Boom limit safety control circuit |
CN104843616A (en) * | 2015-04-17 | 2015-08-19 | 徐州徐工随车起重机有限公司 | Overhead working truck boom and control method for working radius of overhead working truck boom |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3079080A (en) * | 1960-02-12 | 1963-02-26 | Henry L Mason | Crane warning system |
US3269560A (en) * | 1964-12-28 | 1966-08-30 | Drott Mfg Corp | Safety control for cranes |
US3505514A (en) * | 1967-11-13 | 1970-04-07 | Eaton Yale & Towne | Load warning device |
US3549876A (en) * | 1968-03-07 | 1970-12-22 | Eaton Yale & Towne | Crane operating radius indicator |
US3489294A (en) * | 1968-04-25 | 1970-01-13 | Bucyrus Erie Co | Load limit control for hoisting equipment |
-
1972
- 1972-10-12 US US00297062A patent/US3833932A/en not_active Expired - Lifetime
-
1973
- 1973-10-02 CA CA182,506A patent/CA1000856A/en not_active Expired
- 1973-10-10 DE DE19732350904 patent/DE2350904A1/en active Pending
- 1973-10-10 IT IT29986/73A patent/IT995774B/en active
- 1973-10-12 FR FR7336467A patent/FR2202842B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2202842B1 (en) | 1977-05-27 |
FR2202842A1 (en) | 1974-05-10 |
DE2350904A1 (en) | 1974-04-18 |
CA1000856A (en) | 1976-11-30 |
US3833932A (en) | 1974-09-03 |
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