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US 6,190,275 B1Granted
Bicycle chain anti-snare device
OwnerGregory J. Ciancio, John J. Senopoleinventors
Life of this patent
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Abstract
An anti-snare device including a roller dimensioned and positioned to deflect away, and thereby prevent, a bouncing bicycle chain from contacting the lower-rear quadrant of a chain ring gear when shifting to a smaller front gear during vigorous pedaling, and from catching on a tooth on the upwardly rotating section of the gear.
Claims7
An anti-snare roller-guard for the chain of a bicycle having a plurality of gear chain rings on a pedal assembly, comprising:
- a compression ring;
- a roller spindle;
- a roller on said spindle;
- and an extension arm between said compression ring and said spindle;
- with said roller, said spindle and said extension arm being positioned to fix said roller between said bicycle chain and a bottom lower quadrant of said plurality of gear chain rings and with said roller being dimensioned and positioned to deflect a bouncing bicycle chain away from said gear chain rings when contacted.
2 more elements
Dependencies are inferred from the claim text.