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:
Feb. 18, 1997
Filed:
Sep. 22, 1995
Applicant:
Inventor:
Osamu Yaguchi, Kashiwazaki, JP;
Assignee:
Kabushiki Kaisha Riken, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62M / ;
U.S. Cl.
CPC ...
180206 ; 180220 ; 180 652 ;
Abstract
An electric powered bicycle having a dip sensor or switch and/or a gradient sensor or switch. The bicycle has front and rear wheels each rotatably supported by a frame; a chain slung between the wheels and a chainset for transferring manual power to the wheels; an electric motor coupled to one of the wheels for driving the wheel directly; and a power supply capable of supplying electric power to the motor. The dip gradient sensors are associated with a pulse width modulation circuit.