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:
Apr. 15, 2008
Filed:
Feb. 03, 2003
Kyosuke Kokatsu, Osaka, JP;
Akihito Yoshiie, Osaka, JP;
Fumihito Nigara, Osaka, JP;
Sunstar Giken Kabushiki Kaisha, Osaka, JP;
Sunstar Suisse SA, Ecublens, CH;
Abstract
To provide an electromotive power assisted bicycle enabling an aerobic exercise with a light weight and simple mechanism, an electromotive power assisted bicyclecomprises a pedal effort detection means for detecting a pedal effort (), a drive unit, a force combining mechanism for transmitting a rotational torque of a speed reducing unit to a drive shaft, and a heart rate detection sensor. The drive unitcomprises an electric motorand a speed reducing unithaving an electromagnetic clutch. In a mode enabling the aerobic exercise, if the detected pedal effort is higher than the pedal effort level enabling the aerobic exercise, the drive unitdrives the electric motorunder the condition of the electromagnetic clutchbeing engaged and thus assists the pedal effort with the electric force. If the detected pedal effort is lower than said pedal effort level, the electric motor is turned off under the condition of the electromagnetic clutchbeing engaged, and thus applies a loading force to the pedal effort by the rotational resistance of the motor. The pedal effort level can be adjusted in response to the detected heart rate of the rider.