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:
Nov. 27, 2018
Filed:
Jul. 20, 2017
Seiko Epson Corporation, Tokyo, JP;
Daiki Tokushima, Azumino, JP;
Seiko Epson Corporation, , JP;
Abstract
A power transmitting apparatus includes a power transmitting section that includes an input shaft section and an output shaft section and transmits drive force from the input shaft section to the output shaft section, a first detection section including a polarizing section that rotates when one of the input shaft section and the output shaft section rotates and has a polarization characteristic, a light source section that irradiates the polarizing section with light, and a light detection section that outputs a signal according to the intensity of the light from the polarizing section, a second detection section that outputs a signal according to the rotational state of the other one of the input shaft section and the output shaft section, and a determination section that determines the rotational state of the polarizing section based on the signal from the light detection section and the signal from the second detection section.