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.

Date of Patent:
Sep. 10, 2013

Filed:

Feb. 22, 2011
Applicants:

Tomohiko Osaka, Tokyo, JP;

Keiichi Sato, Tokyo, JP;

Takashi Uemura, Tokyo, JP;

Inventors:

Tomohiko Osaka, Tokyo, JP;

Keiichi Sato, Tokyo, JP;

Takashi Uemura, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A leaf spring supports a pillar shaped movable portion disposed in a center portion with respect to a cylindrical fixed portion disposed around the movable portion in the direction of a center axis shiftably so as to position the movable portion in a radial direction. The leaf spring is made of stainless steel having relative magnetic permeability which is not less than 1.1.


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Osaka, Tomohiko. (2013). Leaf spring with high thrust (U.S. Patent No. 8531789). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8531789

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