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Patent Searching and Data


Title:
BICYCLE
Document Type and Number:
Japanese Patent JP2011079367
Kind Code:
A
Abstract:

To provide a bicycle which adopts a gear mechanism to reduce the weight and scale, considerably reduces the vertical distance as compared with a conventional bicycle, and adds new functions in accordance with the intended use in the reduced space.

The bicycle has a gear mechanism 8 including: a first gear 19 which is located outside a front fork 3 and has a central portion fixed to a crank shaft 10; a bearing 21 provided to the front fork 3; an interlocking shaft 22 rotatable about the bearing 21; a second gear 20 which is located outside the front fork 3 to mesh with the first gear 19 and has a central portion fixed to the interlocking shaft 22; a third gear 23 which is located inside the front fork 3 and has a central portion fixed to the interlocking shaft 22; and a fourth gear 24 which is fixed to a hub tube 27a to mesh with the third gear 23 and has a central portion fixed to a hub 27. The gear multiplication rate for the rotation of a drive wheel is related to the rotation of the crank shaft 10.


Inventors:
MURATA MAKOTO
Application Number:
JP2009000231298
Publication Date:
April 21, 2011
Filing Date:
October 05, 2009
Export Citation:
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Assignee:
MURATA MAKOTO
International Classes:
B62K13/00; B62J1/06; B62K1/00; B62K5/02; B62K5/06; B62K7/00; B62K15/00; B62K27/06; B62K27/12; B62L1/00; B62M1/36; B62M11/02; F16D55/08
Domestic Patent References:
JPS4833485U1973-04-23
JPS60193882U1985-12-24
JP2002127979A2002-05-09
JPH01144188U1989-10-03
JPS2614720Y1
JPH0391691U1991-09-18
JPH10297495A1998-11-10
JPS61105285U1986-07-04
Attorney, Agent or Firm:
佐藤 勝
須田 浩史