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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-4956625-A, on 11 September 1990. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000003443

Magnetic gripping apparatus having circuit for eliminating residual flux

Published
Permanent URL
Classification
Manufacturing & Assembly Equipment › Machining Systems
Assignee
TECNOMAGNETE SPA
Original source
US-4956625-A, the United States Patent and Trademark Office, 11 September 1990
Document SHA-256
35f033bab0718cf026c3bd3f330e2ad9851a7a5cd8d5948ee678ff81be9ab803

A magnetic gripping apparatus, of the permanent magnet type, comprising a base plate and peripheral walls, at least a first and a second pole units, each pole unit comprising a main pole piece having an outer face defining a gripping surface, main permanent magnets arranged between said main pole pieces and said base plate, an intermediate pole member between said first and second pole units, said intermediate pole member extending from the base plate to the gripping surface and secondary magnets between the pole members and the pole pieces; a first electrical windings encircles each main magnet, said electrical winding being operatively conected to a control unit, and a residual flux eliminating circuit comprising a second electrical winding encircling said intermediate pole member, said second winding being operatively connected to a demagnetizing control unit.

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Abstract

A magnetic gripping apparatus, of the permanent magnet type, comprising a base plate and peripheral walls, at least a first and a second pole units, each pole unit comprising a main pole piece having an outer face defining a gripping surface, main permanent magnets arranged between said main pole pieces and said base plate, an intermediate pole member between said first and second pole units, said intermediate pole member extending from the base plate to the gripping surface and secondary magnets between the pole members and the pole pieces; a first electrical windings encircles each main magnet, said electrical winding being operatively conected to a control unit, and a residual flux eliminating circuit comprising a second electrical winding encircling said intermediate pole member, said second winding being operatively connected to a demagnetizing control unit.

1. Drawings

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[0002]Sheet 2.

Publication information

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Citation

OpenTechnical Publication OT-2026-000003443, “Magnetic gripping apparatus having circuit for eliminating residual flux,” published September 15, 2026 at 20:28:19 UTC, https://opentechnical.org/p/OT-2026-000003443.

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