Multiple speed hub with coaster brake

US4059028A · kind A · utility

Assignee

• Fichtel & Sachs · DE

Inventors

• Horst Schulz · Friedrichshafen, DE
• Josef Flosser
• Reinhard Kessler
• Karl-Heinz Schmidt · Waldkraiburg, DE
• Ewald Eisend
• Erich Hild
• Karl-Heinz Loffler
• Werner Steuer

Key dates

• Filing date: Mar 25, 1976
• Grant date: Nov 22, 1977
• Expiry date: Mar 25, 1996

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D41/30
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a multiple speed hub with coaster brake for a bicycle, unintentional jamming of the brake is prevented by the provision of novel pawl clutches interposed between a planetary transmission and the hub shell. The recesses of pawl carriers pivotally receiving the clutch pawls are circumferentially oversized to permit limited circumferential movement of each pawl between a driving position and an idling position.