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 8305702 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 06, 2012

Filed:

Feb. 23, 2011
Applicant:

Shun-fan Chiang, Tu-Cheng, TW;

Inventor:

Shun-Fan Chiang, Tu-Cheng, TW;

Assignee:

Hon Hai Precision Industry Co., Ltd., Tu-Cheng, New Taipei, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

An exemplary voice coil motor includes a fixed body, a movable barrel, a number of upper rollers, and a number of lower rollers. The fixed body includes a first receiving cavity, a number of upper recesses, and a number of lower recesses. The upper recesses and lower recesses are respectively arranged at opposite ends of the fixed body, and communicate with the first receiving cavity. The movable barrel is movably received in the first receiving cavity. The upper rollers are engagingly received in the corresponding upper recesses, and engage with the movable barrel for applying first friction forces to the movable barrel. The lower rollers are engagingly received in the lower recesses, and engage with the movable barrel for applying second friction forces to the movable barrel.


Find Patent Forward Citations

Chiang, Shun-Fan. (2012). Voice coil motor, camera module having same and portable electronic device having same (U.S. Patent No. 8305702). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8305702

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