GB1333490A - Permanent magnet grabs - Google Patents
Permanent magnet grabsInfo
- Publication number
- GB1333490A GB1333490A GB1333490DA GB1333490A GB 1333490 A GB1333490 A GB 1333490A GB 1333490D A GB1333490D A GB 1333490DA GB 1333490 A GB1333490 A GB 1333490A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gear
- magnetic
- suspension
- unit
- movable
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/04—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by magnetic means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Transmission Devices (AREA)
- Manipulator (AREA)
Abstract
1333490 Magnetic grabs VSESOJUZNY PROEKTNO-TEKHNOLOGICHESKY INSTITUT ENERGETICHESKOGO MASCHINOSTBOENIA 14 Dec 1971 87899/71 Heading B8H [Also in Division H1] A magnetic grab comprises a body 1 accommodating a magnetic assembly 2 comprising parallel relatively movable units 6, 7 each of which comprises a flat plate of barium oxide ferrite permanent magnets 8 alternating with non-magnetic elements 9 of similar pitch 10. Unit 6 is fixed in the base of body 1 and unit 7 is reciprocally movable above it on ball bearings with a clearance 11 through pitch 10 to connect and disconnect the magnetic flux; by a horizontal rack 14 on the movable unit engaging a sequential gear 15 held in bearings on mounting plate 13. A linkage 19 connects the gear to a crank 21 on a shaft 22 carrying a fixed ratchet 24 and a free spur gear 25 carrying the ratchet panel 26. In the hook suspension 5, a horizontal apertured base carries a vertical guide (Fig. 3, not shown) concentric with an outer sleeve 30 whose surface carries a vertical rack 27 engaging gear 25. The base has vertical walls connected to the hook suspension ring 28, and the suspension slides on central pin 33 passing through the guide bushing and secured to mounting plate 13 against coil spring 4. In operation, when the lifting cable lightens, suspension 5 rises to compress spring 4, and gear 25 rotates to slide panel 26 over rotated 24; the movable magnetic unit 7 being in ON position indicated at 38 with the magnetic elements 8 collinear, to attract the load which is then lifted. When it is lowered to the ground, spring 4 expands to lower suspension 5 until it rests on mounting plate 13, while gear 25 rotates ratchet 24 anticlockwise and through the linkage and rack shifts movable unit 7 to the OFF position, with the magnetic elements 8 out of line, to release the load. On light lifting, suspension 5 rises, gear 25 turns anticlockwise, and movable unit is in the OFF position, until a new load is gripped.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5789971 | 1971-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1333490A true GB1333490A (en) | 1973-10-10 |
Family
ID=10480317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1333490D Expired GB1333490A (en) | 1971-12-14 | 1971-12-14 | Permanent magnet grabs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1333490A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4272042A (en) * | 1976-04-14 | 1981-06-09 | Hov-Air-Ship, Inc., | Airship and associated apparatus and method for anchoring same |
FR2579920A1 (en) * | 1985-04-08 | 1986-10-10 | Milwaukee Electric Tool Corp | |
GB2173427A (en) * | 1985-04-08 | 1986-10-15 | Milwaukee Electric Tool Corp | A portable power tool |
GB2292838A (en) * | 1994-09-02 | 1996-03-06 | Univ Cardiff | Magnetic lifting apparatus |
EP0974545A1 (en) * | 1998-07-24 | 2000-01-26 | Hyung Jung | Magnetic lifting apparatus |
ITBS20120085A1 (en) * | 2012-05-18 | 2013-11-19 | Ense Srl | ACTUATOR PARTICULARLY FOR LIFTS WITH PERMANENT MAGNETS |
CN106586798A (en) * | 2016-06-01 | 2017-04-26 | 岳阳市永金起重永磁铁有限公司 | Magnetic unit vertical combination method of permanent magnetic spreader |
DE102018210285A1 (en) * | 2018-06-25 | 2020-01-02 | Volkswagen Aktiengesellschaft | Switching device for a gripping device and a gripping device comprising at least one such switching device |
WO2020086791A1 (en) * | 2018-10-24 | 2020-04-30 | Magswitch Technology Worldwide Pty Ltd. | Linearly actuated magnetic coupling device |
CN111994768A (en) * | 2020-09-11 | 2020-11-27 | 长春大学 | Multistage magnetic circuit permanent magnet suction hanger |
US11772214B2 (en) | 2018-01-29 | 2023-10-03 | Magswitch Technology, Inc. | Magnetic coupling device |
-
1971
- 1971-12-14 GB GB1333490D patent/GB1333490A/en not_active Expired
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4272042A (en) * | 1976-04-14 | 1981-06-09 | Hov-Air-Ship, Inc., | Airship and associated apparatus and method for anchoring same |
FR2579920A1 (en) * | 1985-04-08 | 1986-10-10 | Milwaukee Electric Tool Corp | |
GB2173428A (en) * | 1985-04-08 | 1986-10-15 | Milwaukee Electric Tool Corp | Electric power tool |
GB2173427A (en) * | 1985-04-08 | 1986-10-15 | Milwaukee Electric Tool Corp | A portable power tool |
GB2173427B (en) * | 1985-04-08 | 1989-06-28 | Milwaukee Electric Tool Corp | A portable power tool with magnetic base. |
GB2173428B (en) * | 1985-04-08 | 1989-06-28 | Milwaukee Electric Tool Corp | Electric power tool with magnetic base |
GB2292838A (en) * | 1994-09-02 | 1996-03-06 | Univ Cardiff | Magnetic lifting apparatus |
GB2292838B (en) * | 1994-09-02 | 1998-07-29 | Univ Cardiff | Lifting apparatus |
EP0974545A1 (en) * | 1998-07-24 | 2000-01-26 | Hyung Jung | Magnetic lifting apparatus |
CN1081605C (en) * | 1998-07-24 | 2002-03-27 | 郑亨 | Automatic on-off device of adsorption magnetic force of magnetic adsorption device |
ITBS20120085A1 (en) * | 2012-05-18 | 2013-11-19 | Ense Srl | ACTUATOR PARTICULARLY FOR LIFTS WITH PERMANENT MAGNETS |
CN106586798A (en) * | 2016-06-01 | 2017-04-26 | 岳阳市永金起重永磁铁有限公司 | Magnetic unit vertical combination method of permanent magnetic spreader |
US11772214B2 (en) | 2018-01-29 | 2023-10-03 | Magswitch Technology, Inc. | Magnetic coupling device |
US11780039B2 (en) | 2018-01-29 | 2023-10-10 | Magswitch Technology, Inc. | Magnetic lifting device having pole shoes with spaced apart projections |
US11931846B2 (en) | 2018-01-29 | 2024-03-19 | Magswitch Technology, Inc. | Magnetic coupling device |
US12017317B2 (en) | 2018-01-29 | 2024-06-25 | Magswitch Technology, Inc. | Magnetic coupling device |
DE102018210285A1 (en) * | 2018-06-25 | 2020-01-02 | Volkswagen Aktiengesellschaft | Switching device for a gripping device and a gripping device comprising at least one such switching device |
WO2020086791A1 (en) * | 2018-10-24 | 2020-04-30 | Magswitch Technology Worldwide Pty Ltd. | Linearly actuated magnetic coupling device |
CN113039619A (en) * | 2018-10-24 | 2021-06-25 | 磁转换技术全球私人有限公司 | Linearly actuated magnetic coupling device |
CN113039619B (en) * | 2018-10-24 | 2023-12-12 | 磁转换技术有限公司 | Linearly actuated magnetic coupling |
CN111994768A (en) * | 2020-09-11 | 2020-11-27 | 长春大学 | Multistage magnetic circuit permanent magnet suction hanger |
CN111994768B (en) * | 2020-09-11 | 2022-09-06 | 长春大学 | Multistage magnetic circuit permanent magnet suction hanger |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1333490A (en) | Permanent magnet grabs | |
US3079191A (en) | Permanent magnet lifting device | |
JPS6448796A (en) | Permanent magnetism holder | |
US1685707A (en) | Toy magnetic crane | |
US2503467A (en) | Can handling magnet | |
US3032363A (en) | Magnetic tie plate lifter | |
GB1355457A (en) | Lifting magnet device for handling ferromagnetic objects | |
GB2043354A (en) | Lifting device with permanent magnet heads | |
GB1391212A (en) | Electrically operated window lifting device | |
GB1186297A (en) | Apparatus for Raising and Lowering the Cover of a Charging Opening of a Horizontal Coke Oven. | |
CN110759219B (en) | Automatic permanent magnet jack | |
US2324769A (en) | Load weighing and totaling device for cranes, hoists, and the like | |
US2915682A (en) | Lifting magnets | |
US2316680A (en) | Toy crane | |
CN217800666U (en) | Spring grinding clamp holder | |
JPS5333596A (en) | Superconductive magnet device | |
GB1390985A (en) | Mobile target assembly for shooting practice | |
CN218849272U (en) | Annular inductance winding device | |
CN203255861U (en) | Double-arm ejector rod hoisting permanent magnet | |
GB369903A (en) | Improvements in or relating to electrical switches | |
CN208452768U (en) | A kind of batteries of electric automobile supporting mechanism | |
ES403218A1 (en) | Improvements in the construction of bearings of magnetic supports for induction of electrical measuring devices. (Machine-translation by Google Translate, not legally binding) | |
GB550788A (en) | Improvements in and relating to electric meters and instruments | |
SU474040A1 (en) | Pickup device | |
SU1757983A1 (en) | Hoisting device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |