Patent · US Expired

Chain switching device for bicycles

US6009771A · kind A · utility

7Cited by

11References

5Claims

0Family size

Assignee

SRAM DEUTSCHLAND GmbH · DE

Inventors

Christian Desenclos · Mauguio, FR
Arndt Gockisch · Würzburg, DE
Marcus Auer · Schweinfurt, DE
Raymond Florczyk · Schweinfurt, DE

Key dates

Filing date	Feb 17, 1998
Grant date	Jan 4, 2000
Priority date	—
Expiry date	Feb 17, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/2045
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A device for switching a chain on different sprockets of a pedal bearing mounted to a seat tube of a frame of a bicycle. The chain switching device includes a cage which can be economically manufactured in a plurality of constructions and readily mounted on different bicycle frames with different angles between a seat tube and a chain brace in order to achieve optimum operating angles with appropriately modified cages. The different cage constructions are manufactured from a single sheet metal blank and have brackets arranged at different positions and of different lengths which are formed by appropriately positioning their bending edges to attach the cage to a parallel guide device.

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