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US 4,376,394 AGranted
Manually operable multi-speed bicycle transmission
OwnerFernand S. Lapeyreinventor
Life of this patent
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Abstract
A multi-speed bicycle transmission located at the drive pedal hub and manually actuatable shifting assembly therefor. The shifting assembly further includes a slidable collar mounted on and rotatable in conjunction with the drive pedal shaft within the drive pedal hub having camming means thereon engageable by pivotably displaceable shift pin means extending into the pedal hub to effect selective manually induced longitudinal displacement of said collar on the drive pedal shaft and an accompanying shifting of the gears in response thereto.
Claims8
A manually actuatable multi-speed transmission for bicycles, comprising
- a pedal shaft rotatably displaceable within the pedal shaft hub of a bicycle frame,
- a plurality of drive gears rotatably mounted on said pedal shaft,
- displaceable pawl means for connecting each of said drive gears into selective driving engagement with said pedal shaft,
- collar means mounted on said pedal shaft within said pedal hub for rotation in conjunction therewith and permitted longitudinal displacement therealong,
- bidirectionally displaceable cable means manually actuatable at one end thereof by a bicycle rider,
- means engageable with said collar means and responsive to predetermined cable displacement for displacing said collar means longitudinally of said pedal shaft, and
- means responsive to the positional location of said collar means longitudinally of said pedal shaft for selectively displacing said pawl means to effect the selected connection of said drive gears into driving engagement with said pedal shaft.
4 more elements
Dependencies are inferred from the claim text.