Machine element or mechanism – Elements – Cranks and pedals
Reexamination Certificate
2005-01-11
2005-01-11
Charles, Marcus (Department: 3682)
Machine element or mechanism
Elements
Cranks and pedals
C074S594100, C280S259000, C474S160000
Reexamination Certificate
active
06840136
ABSTRACT:
A pedal drive mechanism that provides continuous, uninterrupted torque to the drive chain or belt. The continuous torque effect is a result of establishing two separate but connectively joined axes of rotation that transmit pedal crank force to the drive chain (55). The assembly of a right pedal crank (29) rotative mounted about left pedal output crank (28) are connectively fastened (46) to the left pedal crank (38) through the bottombracket bearing (37) defines the first axis of rotation. The assembly of the chain sprockets (35, 34and33), sprocket interface (25) and sprocket support (24) are rotatively mounted by a sealed bearing (40) about a bearing inner race support (23) and eccentric flange (22) establish a second axis of rotation. The fixtures of these two axes of rotation are connectively joined by articulating links (26) with self-aligning sealed bearings (27).
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Science of Cycling; Biomechanics of Cycling: Studies of Pedaling Mechanics of Elite.
Pursuit Riders; Cavanaugh + Sanderson.
Charles Marcus
Jones Earle H
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