Shiftable pedal bearing for a bicycle or the like

Details Shiftable pedal bearing for a bicycle or the like Shiftable pedal bearing for a bicycle or the like

1993-03-23

1994-04-19

Hill, Mitchell J.

Land vehicles

Wheeled

Occupant propelled type

280236, 280259, 475300, B62M 1114

Patent

active

053039424

ABSTRACT:
A shiftable pedal bearing for a bicycle or the like includes a pedal bearing housing supporting a hollow crank axle carrying pedal cranks, and a gear casing with pertaining chainwheel and accommodating a disk which extends parallel to the chainwheel. Arranged in the crank axle is a switch shaft which is actuatable from outside by a shifter so that a coupler, which is operatively connected to the switch shaft, is selectively engageable with circumferential recesses in the chainwheel and a disk. Each recess of the chainwheel and each recess of the disk is of stepped configuration to define a first recess section and a second recess section, with the coupler in a first stage engaging the first recess section with play and in a second stage snugly fitting in the second recess section with no play.

REFERENCES:
patent: 516933 (1894-03-01), Jacoby
patent: 544776 (1895-08-01), Souder
patent: 1632123 (1927-06-01), Else
patent: 3944253 (1976-03-01), Ripley, III
patent: 4283069 (1911-08-01), Citelli

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