Bicycle and a bicycle having a bicycle power train

US5830096A · kind A · utility

Assignee

• Fichtel & Sachs · DE

Inventors

• Frank Schmidt · Langenselbold, DE
• Holger Brandt · Munich, DE
• Markus Krumbeck · Farchant, DE
• Andreas Neuer · Schweinfurt, DE

Key dates

• Filing date: Feb 21, 1997
• Grant date: Nov 3, 1998
• Expiry date: Feb 21, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B62M9/10
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A bicycle power train for bicycles, the bicycle power train including a driving sprocket set and a driven sprocket set. A chain connects the driving sprocket set and the driven sprocket set to one another. The chain transfers torque from a sprocket of the driving sprocket set to a sprocket of the driven sprocket set. The torque is transferred to the chain from the driving sprocket via drive teeth disposed on the driving sprocket. The drive teeth each include a drive flank that engages a corresponding link roller of the chain. Each drive flank has a bevel formed thereon, the bevel being shaped to compensate for the lengthening of the chain with wear. The bevel is configured to maximize the number of drive teeth that can simultaneously engage the chain and participate in the transfer of torque over the life of the chain.