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Electromagnet with Core Spring

IP.com Disclosure Number: IPCOM000092107D
Original Publication Date: 1968-Sep-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 24K

Publishing Venue

IBM

Related People

Kellerman, CJ: AUTHOR [+3]

Abstract

In order to reduce dropout time and to eliminate sealing of armature 10 to pole piece 11, rubber core spring 13 is seated in pole piece 11 to project from it. By this arrangement, armature 10 compresses spring 13 when coil 12 is energized. The pickup time is not increased because armature 10 is not initially opposed by core spring 13 but only by spring 14. Further, the magnetic force is very high at the point when armature 10 engages core spring 13. The compressed core spring 13 causes armature 10 to release rapidly when coil 12 is de-energized.

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Electromagnet with Core Spring

In order to reduce dropout time and to eliminate sealing of armature 10 to pole piece 11, rubber core spring 13 is seated in pole piece 11 to project from it. By this arrangement, armature 10 compresses spring 13 when coil 12 is energized. The pickup time is not increased because armature 10 is not initially opposed by core spring 13 but only by spring 14. Further, the magnetic force is very high at the point when armature 10 engages core spring 13. The compressed core spring 13 causes armature 10 to release rapidly when coil 12 is de-energized.

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