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US 2015/0307156 A1Published application
Magnetic bicycle chain retention mechanism
AssigneePraxis Works LLC
InventorsDavid M. Earle, Jordan Andrew Kestler
Life of this patent
Estimating the term…
Abstract
An apparatus for driving a drive chain, such as on a bicycle, may include a chainring having teeth arranged around a circumference of the chainring, and one or more magnetic portions disposed adjacent to the teeth of the chainring. The one or more magnetic portions may be disposed on the chainring and/or on a frame to which the chainring is rotatably coupled.
Claims20
An apparatus for driving a chain, comprising:
- a chainring having a plurality of teeth disposed around an outer circumference of the chainring;
- and
- one or more magnetic portions attached to the chainring adjacent to a periphery of the chainring.
An apparatus for driving a chain, comprising:
- a chainring having a plurality of teeth disposed around an outer circumference of the chainring, the chainring being rotatably coupled to a frame;
- and
- one or more magnetic portions coupled to the frame, such that the one or more magnetic portions are adjacent to a periphery of the chainring.
A method of preventing unintended disengagement of a chain from a chainring, the method comprising:
- engaging a drive chain using a chainring having a plurality of teeth;
- and
- biasing the drive chain against disengagement from the teeth of the chainring using a magnetic portion disposed adjacent to a periphery of the chainring.
Dependencies are inferred from the claim text.