JPS4912559A - - Google Patents
Info
- Publication number
- JPS4912559A JPS4912559A JP48033074A JP3307473A JPS4912559A JP S4912559 A JPS4912559 A JP S4912559A JP 48033074 A JP48033074 A JP 48033074A JP 3307473 A JP3307473 A JP 3307473A JP S4912559 A JPS4912559 A JP S4912559A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
- B66C13/23—Circuits for controlling the lowering of the load
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Control And Safety Of Cranes (AREA)
- Stopping Of Electric Motors (AREA)
- Safety Devices In Control Systems (AREA)
- Braking Arrangements (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1321372A GB1419641A (en) | 1972-03-21 | 1972-03-21 | Control apparatus for a powered hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4912559A true JPS4912559A (en) | 1974-02-04 |
Family
ID=10018892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48033074A Pending JPS4912559A (en) | 1972-03-21 | 1973-03-22 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3847251A (en) |
| JP (1) | JPS4912559A (en) |
| DE (1) | DE2313893A1 (en) |
| FR (1) | FR2176986B1 (en) |
| GB (1) | GB1419641A (en) |
| IT (1) | IT979910B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2033511B (en) * | 1978-11-10 | 1982-09-02 | Coal Industry Patents Ltd | Brake control equipment for a vehicle with drive means |
| CH652995A5 (en) * | 1980-04-21 | 1985-12-13 | Inventio Ag | LIFT DRIVE WITH START-UP CONTROL. |
| GB2082227B (en) * | 1980-08-15 | 1984-03-07 | Coal Industry Patents Ltd | Brake equipment for underground mining machines |
| AU580453B2 (en) * | 1985-11-04 | 1989-01-12 | Johns Perry Industries Pty. Ltd. | Lift sheave |
| JPH0789750B2 (en) * | 1986-04-10 | 1995-09-27 | 株式会社安川電機 | Crane V / F inverter control method |
| US4754850A (en) * | 1987-07-29 | 1988-07-05 | Westinghouse Electric Corp. | Method for providing a load compensation signal for a traction elevator system |
| US4793442A (en) * | 1987-11-05 | 1988-12-27 | Schindler Elevator Corporation | Method and apparatus for providing pre-travel balancing energy to an elevator drive |
| US6758356B1 (en) * | 1989-10-10 | 2004-07-06 | Manitowoc Crane Companies, Inc. | Liftcrane with synchronous rope operation |
| US5424498A (en) * | 1993-03-31 | 1995-06-13 | Otis Elevator Company | Elevator start jerk removal |
| CN102408065B (en) * | 2011-10-28 | 2014-07-23 | 上海三一科技有限公司 | Multi-winch synchronous control device and control method as well as crane comprising the device |
| WO2017081827A1 (en) * | 2015-11-13 | 2017-05-18 | 株式会社五十嵐電機製作所 | Electric parking brake device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB927494A (en) * | 1959-09-02 | 1963-05-29 | Inventio Ag | Improvements in or relating to starting arrangements of electric drives with mechanical holding brakes |
| CH429904A (en) * | 1965-04-01 | 1967-02-15 | Inventio Ag | Arrangement to achieve a smooth start with an electric drive with mechanical holding brake |
| US3510107A (en) * | 1968-01-11 | 1970-05-05 | United Aircraft Corp | Multiple hoist synchronization system |
| JPS499858B1 (en) * | 1968-11-29 | 1974-03-07 |
-
1972
- 1972-03-21 GB GB1321372A patent/GB1419641A/en not_active Expired
-
1973
- 1973-03-20 DE DE2313893A patent/DE2313893A1/en active Pending
- 1973-03-20 IT IT48896/73A patent/IT979910B/en active
- 1973-03-20 US US00343047A patent/US3847251A/en not_active Expired - Lifetime
- 1973-03-21 FR FR7310082A patent/FR2176986B1/fr not_active Expired
- 1973-03-22 JP JP48033074A patent/JPS4912559A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IT979910B (en) | 1974-09-30 |
| US3847251A (en) | 1974-11-12 |
| DE2313893A1 (en) | 1973-10-04 |
| FR2176986A1 (en) | 1973-11-02 |
| GB1419641A (en) | 1975-12-31 |
| FR2176986B1 (en) | 1977-12-30 |