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.:
Date of Patent:
Oct. 09, 2012
Filed:
Dec. 13, 2010
Yoshinori Ono, Tokyo, JP;
Yoshinori Ono, Tokyo, JP;
Pentax Ricoh Imaging Company, Ltd., Tokyo, JP;
Abstract
A mirror drive apparatus incorporating a brake mechanism of an SLR camera includes a mirror pivoted about a mirror rotational shaft and swingable between a viewing position and a retracted position, wherein the mirror is biased to swing from the viewing position to the retracted position; a brake drum which rotates in association with a swing movement of the mirror; a mirror brake member including a brake shoe which is brought into contact with and disengaged from the brake drum; a mirror control cam driven by a motor to return the mirror, which is biased to swing from the viewing position to the retracted position, to the viewing position from the retracted position; and a brake lever control mechanism which makes the brake shoe contact the brake drum and moves the brake shoe off the brake drum by a rotating operation of the mirror control cam.