Machine element or mechanism – Elements – Cranks and pedals
Patent
1994-10-25
1996-03-12
Luong, Vinh T.
Machine element or mechanism
Elements
Cranks and pedals
745944, 36131, G05G 114
Patent
active
054976804
ABSTRACT:
A bicycle pedal including a front engaging device and a rear engaging device arranged with a cleat bearing surface therebetween in a fore and aft direction of the pedal for engaging the cleat. The rear engaging device is pivotable about a pivotal axis extending parallel to a pedal shaft, and is urged by an urging element in a direction to engage the cleat. The rear engaging device includes a first split part for engaging the cleat, and a second split part attached to the pedal for supporting the first split part. The first split part is movable with the cleat in an engaged position, relative to the second split part within a predetermined range in a direction traversing the fore and aft direction of the pedal. The first split part includes a contact surface for pressing the cleat from above, and a plurality of engaging surfaces spaced from each other along the pedal shaft for pressing the cleat in a pivoting direction around the pivotal axis, i.e. in the fore and aft direction of the pedal.
When the cleat is turned on the pedal surface about a point adjacent a front engaging point in the direction traversing the fore and aft direction of the pedal, a restoring force acts on the cleat to return the cleat to an original position. The restoring force is produced by a relationship between one of the engaging surfaces of the first split part pressing the cleat and a center of pivotal movement of the first split part.
REFERENCES:
patent: 4928549 (1990-05-01), Nagano
patent: 4947708 (1990-08-01), Lacombe
patent: 5014571 (1991-05-01), Dapezi
patent: 5048369 (1991-09-01), Chen
Luong Vinh T.
Shimano Inc.
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