Front derailleur device for a bicycle chain shift

US10106224B2 · kind B2 · utility

Assignee

• SRAM DEUTSCHLAND GmbH · DE

Inventors

• Sebastian Düweling · Schonungen, DE
• Markus Engel · Koblenzer Straße, DE

Key dates

• Filing date: Aug 8, 2016
• Grant date: Oct 23, 2018
• Expiry date: Mar 10, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B62M9/134
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A front derailleur device for a bicycle chain shift includes a frame fixing part for attachment to a bicycle frame, a hinge arrangement which is pivotable relative to the frame fixing part, and a chain cage which is pivotable relative to the frame fixing part via the pivotable hinge arrangement for guiding and pivoting of the bicycle chain. The hinge arrangement includes at least two hinged struts which can be mounted rotatably relative to the frame fixing part and relative to the chain cage about pivot axes. The pivot axes run substantially parallel to each other and, in a mounted state of the derailleur device on a bicycle, may be oriented substantially vertically.