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:
Dec. 17, 2024
Filed:
Feb. 23, 2022
Seiko Epson Corporation, Tokyo, JP;
Junko Ao, Shiojiri, JP;
Katsuyuki Kondo, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A drive transmission unit includes a cam member, a motor, a cam follower, and an extension spring. The cam member rotates about a rotation shaft. The cam member includes a first cam defining a maximum distance between the cam follower and the rotation shaft and a second cam having an outer peripheral surface positioned closer to the rotation shaft than the outer peripheral surface of the first cam. The motor rotates the rotation shaft. The cam follower is to be in contact with the cam member and moves in the +B direction and the −B direction by the rotation of the cam member. The extension spring presses the cam follower against the cam member. When the cam follower moves in the −B direction by the rotation of the cam member, this operation includes contact between the outer peripheral surface of the second cam and the cam follower.