Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Work or object holding type
Patent
1987-09-11
1989-01-31
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Work or object holding type
335295, H01F 720
Patent
active
048019119
ABSTRACT:
A method and apparatus for assembling magnetic serpentine coils on a magnetic sheet includes a carriage movable vertically and horizontally and supporting on its lower side a plurality of elongated electromagnets. Permanent magnets are arranged to have an upper surface engageable with the electromagnet and a lower surface having indentations to conform with the tubing. The movement of the carriage and the energization of the electromagnet are controlled so that the electromagnet is energized with a first polarity to attract the permanent magnet members and the serpentine tubing to lift the tubing from a predetermined position and, by movement of the carriage, pick up the tubing, transfer it horizontally to the sheet, and vertically deposit it on the sheet. The electromagnets are then reversed in polarity to cause the permanent magnets to separate from the electromagnets and clamp the tubing on the sheet so that the tubing can be fastened by other methods. After the fastening is complete, the electromagnets are moved into engagement with the permanent magnets and energized to the original polarity to attract the permanent magnets and lift them off the assembled tubing and sheet.
REFERENCES:
patent: 2726752 (1955-12-01), Maher
patent: 3316514 (1967-04-01), Radus et al.
patent: 3389358 (1968-06-01), Tubbs
Harris George
White Consolidated Industries, Inc.
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