Bicycle crank assembly

Machine element or mechanism – Elements – Cranks and pedals

Patent

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Details

745943, B62M 300

Patent

active

058991190

ABSTRACT:
A bicycle having a crank assembly for driving the sprocket and chain assembly of the bicycle. The crank assembly includes a hub mounted to the frame of the bicycle so as to be rotatable at least in a direction of forward rotation. The hub is connected to a front sprocket, and two effort arm assemblies are connected to the hub. Each effort arm assembly has an effort arm. The effort arms extend outwardly substantially perpendicular to the axis of rotation of the hub, and substantially opposite to each other. Each effort arm assembly further includes an angle pedal arm. An angle pedal arm is connected to an end of the effort arm distal to the hub. Each angle pedal arm makes an angle of between about 0 and 90 degrees with the corresponding effort arm. A pedal is provided on each pedal arm, such that the pedal arm positions the pedal substantially behind the effort arm relative to the direction of forward rotation of the crank assembly. A crank assembly to modify existing bicycles is also disclosed.

REFERENCES:
patent: 381547 (1888-04-01), Harrison
patent: 518456 (1894-04-01), Ide
patent: 563821 (1896-07-01), Unruh
patent: 595535 (1897-12-01), Edwards
patent: 597911 (1898-01-01), Morris
patent: 622085 (1899-03-01), Shepard
patent: 631276 (1899-08-01), Bulova
patent: 721943 (1903-03-01), Dockstader
patent: 1227743 (1917-05-01), Burgedorff
patent: 3888136 (1975-06-01), Lapeyre
patent: 4159652 (1979-07-01), Trammell, Jr.
patent: 4429890 (1984-02-01), Hon
patent: 4560182 (1985-12-01), Yamaguchi
patent: 4708106 (1987-11-01), Giocastro et al.
patent: 4793208 (1988-12-01), Bregnard et al.
patent: 4816009 (1989-03-01), Philipp
patent: 4857035 (1989-08-01), Anderson
patent: 4872695 (1989-10-01), Silvano et al.
patent: 5060536 (1991-10-01), Boys
patent: 5125288 (1992-06-01), Amiet
Brochure for Super Power Crank Rod, c. 1996, Grandprix Co., Ltd., Seoul, Korea; Sang Yeon Jo, Inventor.
Bicycle Magazine's Training for Fitness and Endurance, 1990, at p. 43, Rodale Press, Inc., Emmaus, Pennsylvania.
David Chauner and Michael Halstead, The Tour de France Complete Book of Cycling, 1990, at pp. 89-90, Villard Books, New York, New York.
Greg Lemond and Kent Gordis, Greg Lemond's Complete Book of Bicycling, 1987, at pp. 160-164, Putnam Publishing Group, New York, New York.
Edmund R. Burke, ed., Science of Cycling, 1986, at pp. 73-76, Leisure Press, Champaign Illinois.

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