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Patent Searching and Data


Title:
BICYCLE
Document Type and Number:
WIPO Patent Application WO/2011/043021
Kind Code:
A1
Abstract:
Disclosed is a bicycle in which a gear mechanism is used in order to reduce the weight and scale so that the vertical distance is considerably smaller than in conventional bicycles, and novel functions corresponding to the intended use can be added in the reduced space. The bicycle has a gear mechanism (8) comprising: a first gear (19) which is positioned at the outer side of a front fork (3) and has the centre part thereof fixed to a crank shaft (10); a bearing (21) which is provided on the front fork (3); an interlocking shaft (22) which is rotatable about the bearing (21); a second gear (20) which is positioned at the outer side of the front fork (3) and meshes with the first gear (19), and has the centre part thereof fixed to the interlocking shaft (22); a third gear (23) which is positioned at the inner side of the front fork (3) and has the centre part thereof fixed to the interlocking shaft (22); and a fourth gear (24) which is fixed to a hub tube (27a) and meshes with the third gear (23), and has the centre part thereof fixed to a hub (27). The gear multiplication rate for rotation of the drive wheel is related to the rotation of the crank shaft (10).

Inventors:
MURATA MAKOTO (JP)
Application Number:
JP2010/005661
Publication Date:
April 14, 2011
Filing Date:
September 16, 2010
Export Citation:
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Assignee:
MURATA MAKOTO (JP)
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
Foreign References:
JP2002127979A2002-05-09
JPS60193882U1985-12-24
JPS4833485U1973-04-23
JPH01144188U1989-10-03
JPS61105285U1986-07-04
JPH10297495A1998-11-10
Attorney, Agent or Firm:
SATO, MASARU (JP)
Masaru Sato (JP)
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