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IT1211236B - Rear derailer for bicycle gears - Google Patents

Rear derailer for bicycle gears

Info

Publication number
IT1211236B
IT1211236B IT8767646A IT6764687A IT1211236B IT 1211236 B IT1211236 B IT 1211236B IT 8767646 A IT8767646 A IT 8767646A IT 6764687 A IT6764687 A IT 6764687A IT 1211236 B IT1211236 B IT 1211236B
Authority
IT
Italy
Prior art keywords
axis
support body
bicycle
rocker arm
frame
Prior art date
Application number
IT8767646A
Other languages
Italian (it)
Other versions
IT8767646A0 (en
Inventor
Giorgio Marchigiano
Original Assignee
Mogno Gianpietro
Giorgio Marchigiano
Ezzu Luigi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mogno Gianpietro, Giorgio Marchigiano, Ezzu Luigi filed Critical Mogno Gianpietro
Priority to IT8767646A priority Critical patent/IT1211236B/en
Publication of IT8767646A0 publication Critical patent/IT8767646A0/en
Priority to DE8888830312T priority patent/DE3876890T2/en
Priority to EP88830312A priority patent/EP0302028B1/en
Priority to ES198888830312T priority patent/ES2037277T3/en
Priority to AT88830312T priority patent/ATE83721T1/en
Priority to MYPI88000826A priority patent/MY102840A/en
Priority to US07/223,043 priority patent/US4842568A/en
Priority to CN88104602.7A priority patent/CN1005906B/en
Application granted granted Critical
Publication of IT1211236B publication Critical patent/IT1211236B/en

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  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

The derailer comprises a support body (5) for connection to the bicycle frame (1). A rocker arm (7) carries idler wheels (8,9) for the chain (4) and is mounted on the support body for sliding movement along an axis (6a) parallel to the axis of the rear hub of the bicycle. A resilient member urges the rocker arm towards the first position and urges the rocker arm to pivot about the axis in the sense corresponding to the tensioning of the chain. The support body is connected to the bicycle frame with the interposition of an auxiliary member (18) which is fixed to the frame and which supports the obdy for pivoting about a further axis (20) parallel to the axis of the rear hub of the bicycle and displaced forwardly of the rear-hub axis of the bicycle. The device also incudes an auxiliary resilient element (21) interposed between the support body and the auxiliary member for urging the support body towards a position in which the idler wheels are nearest to the sprockets.
IT8767646A 1987-07-24 1987-07-24 Rear derailer for bicycle gears IT1211236B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
IT8767646A IT1211236B (en) 1987-07-24 1987-07-24 Rear derailer for bicycle gears
DE8888830312T DE3876890T2 (en) 1987-07-24 1988-07-19 REAR GEAR SHIFT FOR A BICYCLE.
EP88830312A EP0302028B1 (en) 1987-07-24 1988-07-19 Rear derailer for bicycle gears
ES198888830312T ES2037277T3 (en) 1987-07-24 1988-07-19 REAR DECARRILATOR FOR SHIFTING OF BICYCLES.
AT88830312T ATE83721T1 (en) 1987-07-24 1988-07-19 REAR GEAR GEARS FOR A BICYCLE.
MYPI88000826A MY102840A (en) 1987-07-24 1988-07-22 Rear derailer for bicycle gears
US07/223,043 US4842568A (en) 1987-07-24 1988-07-22 Rear derailleur for bicycle gears
CN88104602.7A CN1005906B (en) 1987-07-24 1988-07-23 Rear speed changing gear transmission mechanism of bicycle gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8767646A IT1211236B (en) 1987-07-24 1987-07-24 Rear derailer for bicycle gears

Publications (2)

Publication Number Publication Date
IT8767646A0 IT8767646A0 (en) 1987-07-24
IT1211236B true IT1211236B (en) 1989-10-12

Family

ID=11304184

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8767646A IT1211236B (en) 1987-07-24 1987-07-24 Rear derailer for bicycle gears

Country Status (1)

Country Link
IT (1) IT1211236B (en)

Also Published As

Publication number Publication date
IT8767646A0 (en) 1987-07-24

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950531