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:
Oct. 26, 2021
Filed:
Feb. 05, 2019
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04B 13/02 (2006.01); G04B 19/02 (2006.01); G04C 3/14 (2006.01);
U.S. Cl.
CPC ...
G04B 13/02 (2013.01); G04B 19/02 (2013.01); G04C 3/14 (2013.01);
Abstract
A train wheel unit is provided with a first wheel which is configured by a material including a conductive polymer and a carbon powder, and a second wheel which is configured by a metal material. The train wheel unit transmits a drive force of an electric motor module which is driven using a battery as an electrical power source.