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 8575793 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 05, 2013

Filed:

Nov. 25, 2010
Applicant:

Shun-fan Chiang, Taipei Hsien, TW;

Inventor:

Shun-Fan Chiang, Taipei Hsien, TW;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 33/00 (2006.01); H02K 35/00 (2006.01); H02K 41/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A voice coil motor includes a mount, a movable unit and a number of rollers. The mount includes a through hole, a number of recesses opposing the through hole, and a number of magnetic blocks mounted in the through hole. The movable unit includes a barrel and a coil of wire surrounding the barrel. The movable unit is movably received in the through hole of the frame and surrounded by the magnetic blocks. The rollers are rotatably received in the respective recesses and come in contact with the barrel. The rollers hold the movable unit in position when no magnetic force needed to be applied on the movable unit.


Find Patent Forward Citations

Chiang, Shun-Fan. (2013). Voice coil motor with rollers (U.S. Patent No. 8575793). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8575793

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

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