Patent · US Expired

Freewheel hub for bicycles

US5738197A · kind A · utility

22Cited by

6References

10Claims

0Family size

Assignee

Fichtel & Sachs · DE

Inventors

Peter Kroger · Schweinfurt, DE
Klaus Konig · Leverkusen, DE
Guillaume Crosnier · Orsay, FR

Key dates

Filing date	May 22, 1996
Grant date	Apr 14, 1998
Priority date	—
Expiry date	May 22, 2016

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16D41/30
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A freewheel hub for bicycles to provide propulsion by means of a plurality of sprockets when a derailleur is used. A sprocket or gear carrier transmits the rotational forces introduced to the sprockets mounted on the sprocket carrier by means of a drive sleeve, a ratchet and a pawl carrier to a hub sleeve in the direction of rotation of the drive, whereby the ratchet represents a freewheel in the opposite direction of rotation. The propulsion unit, which consists of the sprocket carrier and the drive sleeve, is divided into two parts, and can therefore be manufactured easily with regard to its driving gearings and pawl gearing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.