FR1516267A - Improvements to lifting devices - Google Patents

Improvements to lifting devices

Info

Publication number
FR1516267A
FR1516267A FR93003A FR93003A FR1516267A FR 1516267 A FR1516267 A FR 1516267A FR 93003 A FR93003 A FR 93003A FR 93003 A FR93003 A FR 93003A FR 1516267 A FR1516267 A FR 1516267A
Authority
FR
France
Prior art keywords
lifting devices
lifting
devices
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
FR93003A
Other languages
French (fr)
Inventor
Aubrey H Smith
John P Truemper
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.)
Eaton Corp
Original Assignee
Eaton Yale and Towne Inc
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 Eaton Yale and Towne Inc filed Critical Eaton Yale and Towne Inc
Application granted granted Critical
Publication of FR1516267A publication Critical patent/FR1516267A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/02—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using supply voltage with constant frequency and variable amplitude
    • H02P27/026—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using supply voltage with constant frequency and variable amplitude whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
    • 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
    • B66C13/26—Circuits for controlling the lowering of the load by ac motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/24—Electrical devices or systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/02—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using supply voltage with constant frequency and variable amplitude
    • 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
    • B66C2700/081—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists with ac motors
FR93003A 1966-06-06 1967-01-30 Improvements to lifting devices Expired FR1516267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US555410A US3402335A (en) 1966-06-06 1966-06-06 Reversible induction motor hoist control

Publications (1)

Publication Number Publication Date
FR1516267A true FR1516267A (en) 1968-03-08

Family

ID=24217156

Family Applications (1)

Application Number Title Priority Date Filing Date
FR93003A Expired FR1516267A (en) 1966-06-06 1967-01-30 Improvements to lifting devices

Country Status (4)

Country Link
US (1) US3402335A (en)
DE (2) DE1481748C3 (en)
FR (1) FR1516267A (en)
GB (1) GB1167189A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207508A (en) * 1977-04-14 1980-06-10 Habisohn Victor J Variable speed motor control system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876406A (en) * 1956-04-05 1959-03-03 Wacline Inc Speed control for electric motors
US3090899A (en) * 1960-04-01 1963-05-21 Square D Co Control circuit for a. c. motor hoist
US3248625A (en) * 1962-04-23 1966-04-26 Harnischfeger Corp Electric motor control system
US3237070A (en) * 1962-08-02 1966-02-22 Honeywell Inc Self-balancing positional servo system

Also Published As

Publication number Publication date
GB1167189A (en) 1969-10-15
DE1481748C3 (en) 1978-12-14
DE1613634A1 (en) 1972-06-15
US3402335A (en) 1968-09-17
DE1481748B2 (en) 1978-04-27
DE1481748A1 (en) 1969-03-20

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