Chainring

US9182027B2 · kind B2 · utility

Assignee

• SRAM, LLC · US

Inventors

• Markus Reiter · Schweinfurt, DE
• Raymond Florczyk · Schweinfurt, DE
• Henrik Braedt · Diez, DE

Key dates

• Filing date: Dec 6, 2011
• Grant date: Nov 10, 2015
• Expiry date: Dec 13, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2165
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A solitary chainring of a bicycle front crankset for engaging a drive chain, including a plurality of teeth formed about a periphery of the chainring, the plurality of teeth consisting of an even number. The plurality of teeth includes a first group of teeth and a second group of teeth arranged alternatingly between the first group of teeth. The first group of teeth and the second group of teeth are equal in number. Each of the first and second group of teeth include an outboard side and an inboard side opposite the outboard side and each tooth of the first group of teeth includes at least a first protrusion on the outboard side thereof and each tooth of the second group of teeth are free of the first protrusions on the outboard side and the inboard side.