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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5434549 B1

PDFFull Text
Date of Patent:
Jul. 18, 1995

Filed:

Jul. 20, 1993

Moving magnet-type actuator

Applicant:
Inventors:

Yasuyuki Hirabayashi, Tokyo, JP;

Takatoshi Oyama, Tokyo, JP;

Hiroyuki Sohno, Tokyo, JP;

Sigeo Saito, Tokyo, JP;

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:

Oblon, Spivak, McClelland, Maier & Neustadt

Primary Examiner:

Leo P Picard

Assistant Examiner:

Ramon M Barrera

Int. Cl.
CPC ...
H01F / ; H01F / ;
U.S. Cl.
CPC ...
335229 ;
Abstract

In a moving magnet type actuator, a magnet moving body including at least two permanent magnets of which same poles are confronting each other and an intermediate magnetic substance. The magnet moving body is movably arranged inside at least three coils. The at least three coils are connected so that current flows in different directions with a zone between the permanent magnets as a boundary. Whereby thrust and efficiency of the moving magnet type actuator is improved.

Find Patent Forward Citations

Hirabayashi, Yasuyuki. (1995). Moving magnet-type actuator (U.S. Patent No. 5434549). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5434549

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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