Machine element or mechanism – Elements – Cranks and pedals
Patent
1992-02-20
1992-11-03
Bonck, Rodney H.
Machine element or mechanism
Elements
Cranks and pedals
745944, 36131, G05G 114, A43B 500
Patent
active
051598531
ABSTRACT:
A bicycle pedal has two opposed bilaterally symmetric tracks which are substantially identical. Each track is bounded by an axially disposed central concave surface and two substantially parallel apposed side surfaces. Each side surface extends inward, in equidistant juxtaposition with the central convex surface. Each track is slightly wider at the free end of the pedal than the end fixed to the crank arm. A shoe cleat has a bottom with a longitudinally disposed central concave surface and adjacent flat lateral surfaces as well as upper bilateral cleat side surfaces. The bottom central concave and two upper bilateral surfaces mate with the corresponding pedal track surfaces in an engagement parallel to the pedal axis. Attached to the free end of the pedal is a lead which has an exterior flush with the central convex surfaces of both pedal tracks. The lead tapers bilaterally into fins lying in front of the area between the two opposed pedal tracks. The cleat bottom concave surface, when in contact with the pedal lead, will bias the lead into one of two opposed equilibrium positions wherein the cleat bottom flat lateral surfaces rest on the pedal lead bilateral fins. The lead guides the cleat in longitudinal alignment of the mating surfaces. At full insertion of cleat into the pedal track, the upper bilateral surfaces of the cleat are in full contact with the opposed side surfaces of the pedal and the bottom central concave surface of the cleat is in full contact with the central longitudinal convex surface of the pedal.
REFERENCES:
patent: 550409 (1895-11-01), Hanson
patent: 598325 (1898-04-01), McIntyre
patent: 1393256 (1921-10-01), Wright
patent: 2582551 (1952-01-01), Malherbe
patent: 3964343 (1976-06-01), Lauterbach
patent: 4214384 (1980-07-01), Gonzalez
patent: 4538480 (1985-09-01), Trindle
patent: 4570363 (1986-02-01), Annovi
patent: 4685351 (1987-08-01), Pegg
patent: 4716784 (1988-01-01), Schlotterer
patent: 4892009 (1990-01-01), Gibson
Bonck Rodney H.
Gibson Peter
Whitelaw Nicholas
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