Bicycle pedalling apparatus

Claim 1

Pedalling apparatus for releasably and replaceably coupling a rider's foot to a pedal arranged to revolve about a pedal axis, said pedalling apparatus having the improvement comprising A. latch means upwardly projecting on said pedal with first and second latch members selectively directed along a latch axis longitudinal with said pedal axis, said latch axis and a transverse longitudinal axis being in a normally horizontal plane and said upward projection being normally vertical and orthogonal to that horizontal plane, B. at least one of said latch members being resiliently biased relative to the other along said latch axis, and C. socket means arranged for wearing on a rider's foot and having a walking surface free of pedal-engaging projections and having a latch-receiving recess with first and second latch seats for releasably and replaceably couplingly seating, against the action of said resilient bias, said latch members, said socket means being adapted to couple with said latch means upon vertical downward movement, upon longitudinal forward movement, and upon rotational twist movement of said socket means relative to said latch means, D. whereby said socket means resists unseating of said latch means coupled therewith and transmits to said latch means a cycling thrust in response to pedalling loads, and said latch means unseats from said socket means in response to selected non-pedalling loads.