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:
Jan. 21, 2020
Filed:
Jun. 27, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Jumpei Ishibiki, Kawasaki, JP;
Chikara Aoshima, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A shutter apparatus includes a shutter base having an opening, a light shield configured to reciprocate between a closed state that closes the opening and an open state that opens the opening, a motor, a cam member configured to move the light shield when the cam member is rotated by the motor, and a restricting member configured to contact the cam member and to restrict the cam member from rotating in a first direction and in a second direction different from the first direction, the restricting member being rotatable and including a rotary damper engaged with the cam member. The restricting member is located at different positions in a rotating direction between when the restricting member restricts the cam member from rotating in the first direction and when the restricting member restricts the cam member from rotating in the second direction.