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:
Aug. 20, 2019
Filed:
Jan. 08, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A shutter apparatus includes a shutter base plate having an opening, a light shield movable between a closed state for closing the opening and an open state for opening the opening, a cam member rotatable in a first angle range, a second angle range, and a third angle range between the first angle range and the second angle range, the cam member that rotates in the third angle range rotating the light shield, a motor configured to drive the cam member, a forcing member configured to force the cam member so as to rotate the cam member from the first angle range to the third angle range, and a restricting member configured to restrict the forcing member from forcing the cam member in at least part of the first angle range.