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:
May. 08, 2012
Filed:
Jan. 27, 2011
Tetsuya Tamura, Matsumoto, JP;
Akira Nemura, Matsumoto, JP;
Hiroki Chino, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A sheet material transport apparatus includes a second planetary gear engaging with a transmission gear and providing planetary motion around the transmission gear. The second planetary gear is in a second separated position not capable of engaging with a first planetary gear during forward-direction rotation. The transmission gear engages with the first planetary gear and rotates in a direction that causes a second transport roller to rotate in the forward rotation direction, and positioned to engage with the first planetary gear that is positioned in a first engaging position during reverse rotation. A load is placed on the transmission gear by the second transport roller. The transmission gear rotates in the opposite direction to the forward-direction rotation. The second planetary gear applies a force on the first planetary gear in the direction that separates the first planetary gear from the transmission gear due to rotation.