Motor vehicles – Special wheel base – Rider propulsion with additional source of power – e.g.,...
Reexamination Certificate
2001-05-10
2003-02-11
Dickson, Paul N. (Department: 3611)
Motor vehicles
Special wheel base
Rider propulsion with additional source of power, e.g.,...
C180S205200, C180S207100, C180S220000
Reexamination Certificate
active
06516908
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is related to an electrical bicycle, and more particularly to a transmission for an electrical bicycle.
2. Description of Related Art
A conventional transmission for an electric bicycle utilizes a planet gear assembly to transmit power from cranks. The structure of the planet gear is complex and requires a high manufacturing precision, so the cost of the planet gear is high. When the required velocity rate for different bicycles varies, the transmission needs to be replaced with another planet gear assembly. This also increases the manufacturing cost. Moreover, it is inconvenient for a manufacture to change a relative angle between the motor and a crank axle of the bicycle, because other elements must be redesigned in this situation.
Therefore, the invention provides a transmission for an electric bicycle to mitigate and/or obviate the aforementioned problems.
SUMMARY OF THE INVENTION
A main objective of the invention is to provide a transmission for an electric bicycle which has a simple and compact structure with a low cost.
Another objective of the invention is to provide a transmission for an electric bicycle which is able to change a relative angle between a motor and a crank axle.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 5845727 (1998-12-01), Miyazawa et al.
patent: 5857537 (1999-01-01), Matsumoto et al.
patent: 5984038 (1999-11-01), Fujiwara et al.
patent: 6012538 (2000-01-01), Sonobe et al.
patent: 6073717 (2000-06-01), Yamamoto et al.
patent: 6080073 (2000-06-01), Liu et al.
patent: 6263993 (2001-07-01), Lin
Dickson Paul N.
Kolisch & Hartwell, P.C.
Lum L.
Merida Industry Co., Ltd.
LandOfFree
Transmission for an electric bicycle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmission for an electric bicycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmission for an electric bicycle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3182290