DC operated polarized electromagnet and electromagnetic contactor using the same
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United States of America Patent
Stats
-
Jul 17, 2018
Grant Date -
Jun 30, 2016
app pub date -
Mar 9, 2016
filing date -
May 20, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The DC operated polarized electromagnet includes a spool around which an excitation coil is wound and that has a central opening, a plunger having first and second armatures, fitted individually, an outer yoke enclosing opposing side faces of the spool so as to attract the first armature, an inner yoke arranged on the inner side of the outer yoke so as to attract the second armature, and permanent magnets arranged between the outer yoke and the inner yoke, and reduces magnetoresistance by setting the thickness of the outer yoke thicker than the thickness of the inner yoke so that convergent magnetic flux in the plunger is diverted into the outer yoke.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- H01F Class
- 29.87 % this patent is cited more than
- 7 Age
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| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 17, 2026 |
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