US 2016/0236750 A1 · BICYCLE DRIVE SYSTEM

Abstract

A bicycle drive system includes a front sprocket assembly having a first front sprocket and a second front-sprocket. The first front-sprocket has a first front-tooth number that is the largest tooth number in the front sprocket assembly. The second front-sprocket has a second front-tooth number that is less than or equal to the first front-tooth number. The second front-sprocket is adjacent to the first front-sprocket without another sprocket intervening therebetween in an axial direction. The first front-tooth number is less than or equal to 40.

Claims23

Dependent claims

A bicycle drive system comprising:

a front sprocket assembly including
a first front-sprocket having a first front-tooth number that is the largest tooth number in the front sprocket assembly;
and
a second front-sprocket having a second front-tooth number that is less than or equal to the first front-tooth number, the second front-sprocket being adjacent to the first front-sprocket without another sprocket intervening therebetween in an axial direction;
the first front-tooth number being less than or equal to 40.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/621,996Filed 13 Feb 2015

Published

18 Aug 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

B62M 25/02
Actuators for gearing speed-change mechanisms specially adapted for cycles: with mechanical transmitting systems, e.g. cables, levers
B62M 3/00
Construction of cranks operated by hand or foot
B62M 9/105
Involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like: involving front sprocket…
B62M 9/122
Rear derailleurs: electrically or fluid actuated; Controls thereof

Bicycle drive system

Life of this patent

Bicycle drive system

Life of this patent

Abstract

Claims23