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:
Jun. 10, 2008
Filed:
Apr. 19, 2005
Kimio Uematsu, Fuji, JP;
Naoyuki Murakami, Kawasaki, JP;
Kimio Uematsu, Fuji, JP;
Naoyuki Murakami, Kawasaki, JP;
Nikon Corporation, Tokyo, JP;
Abstract
As a shutter release button is pressed down, a front end portion of a sequence drive lever moves toward the rear side and, as a result, a mirror-up lever is caused to rotate to the right by the force applied from a mirror up spring. In this state, a mirror drive end presses a mirror drive pin upward to raise a main mirror. In addition, a shutter drive end comes in contact with a shutter drive boss at a switching lever to push the shutter drive boss upward, thereby pulling the shutter blades downward. During a reset operation, the front end portion moves to the front side causing the mirror-up lever to rotate to the left. The main mirror is thus lowered. Since the switching lever is caused to rotate to the right with the force applied from a switching lever reset spring, the shutter blades are pulled upward to shield an opening.