Bicycle computer control arrangement and method
AssigneeShimano Inc.
InventorKazuhiro Takeda
Life of this patent
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Abstract
A control system for an automatic shifting bicycle transmission comprises a control unit that communicates with a memory location. The memory location stores a plurality of shift tables. The control system uses the information in the shift tables to shift gears with a powered shifting device. The powered shifting device can be manipulated using shift switches in a manual operating mode. The shift switches also are used to switch between the plurality of shift tables.
Claims13
An electrical auto-shift bicycle comprising a control unit, a powered shifting device, said control unit being in electrical communication with said powered shifting device, said control unit also being in electrical communication with a memory location, said memory location comprising a plurality of shift tables, a first switch and a second switch being in communication with said powered shifting device through said control unit, said first switch and said second switch being adapted to initiate movement of said powered shifting device in a manual operating mode, and at least one of said first switch and said second switch being adapted to select one shift table from said plurality of shift tables for use in an automatic operating mode.
An automatic transmission system for a bicycle capable of operating in a manual mode and an automatic mode, said system comprising a control unit, a shifting switch and a powered shifting device, said control unit comprising a memory containing a plurality of shift tables, said control unit being in communication with said shifting switch and said control unit being in communication with said powered shifting device, said shifting switch being adapted to operate said powered shifting device in said manual operating mode and to select among said plurality of shift tables for use in said automatic operating mode.
An electrical auto-shift bicycle comprising an automatic transmission system capable of operating in a manual mode and an automatic mode, said system comprising a control unit, a shifting switch and a powered shifting device, said control unit comprising a memory containing a plurality of shift tables, said control unit being in communication with said shifting switch and said control unit being in communication with said powered shifting device, said shifting switch being adapted to operate said powered shifting device in said manual operating mode and to select among said plurality of shift tables for use in said automatic operating mode.
A method of controlling shifting on a bicycle comprising an automatic shifting system comprising a first gear ratio and a second gear ratio, said automatic shifting system comprising a shifting switch, a control unit electrically communicating with said shifting switch, a powered shifting device and said control unit also electrically communicating with said powered shifting device, said powered shifting device being adapted to operate in a manual shifting mode and in an automatic shifting mode, said method comprising providing a plurality of shift point tables in memory associated with said control unit, selecting one of said first gear ratio and said second gear ratio in said manual shifting mode or one of said plurality of shift point tables in said automatic shifting mode with said shifting switch and said control unit being adapted to manipulate said powered shifting device in accordance with said selected shift point table.
Dependencies are inferred from the claim text.