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:
Jul. 16, 2002
Filed:
Sep. 11, 2000
Jong-il Park, Seoul, KR;
Yun-rak Lee, Seoul, KR;
Jung-II Park, Seoul, KR;
Abstract
A traveling and accelerating system for bicycles includes a frame having a front wheel at a front part and a rear wheel at a rear part thereof; a pair of pedals fixed at both sides of a shaft which is rotatably supported at a boss being fixed under a center of the frame, to be driven by a user's feet; a driving sprocket axially fixed on the shaft for transmitting rotation power via a chain to the rear wheel; a housing attached at one side of the boss to be closed with a cap and having a hollow cross-sectional shape to accommodate accessories; a pinion axially fixed on the shaft beside the driving sprocket in the housing; a first gear member accommodated in the housing and having an inner gear part along its inner diameter; a second gear member movably contacting the first gear member and provided with planetary gears to be engaged with the inner gear part of the first gear, the planetary gears being fixed by pins and rotatable in relation to the pins; a pair of latch means respectively inserted and fixed in the first gear member and the second gear member by being penetrated with a shaft of the pedals so as to rotate the gear members respectively in one direction; and a conversion control part connected to a release cable outside the housing for setting a travel mode or an acceleration mode corresponding to rotation directions of the pedals by controlling engagement of the first gear member and the second gear member according to the user's selection.