Modified derailleur

Details Modified derailleur Modified derailleur

1989-05-26

1990-01-02

Bui, Thuy M.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

Including belt shiftable axially from one to another surface...

F16H 900

Patent

active

048910368

ABSTRACT:
A derailleur is provided with locking devices in the form of bands or ratchets around the upper and lower pivoting members of the derailleur to hold the derailleur securely in place during use and thus preventing the bicycle chain from disengaging from the chain sprocket or the chain wheels. The locking devices are activated/deactivted by a hand lever mounted on the handle bar of the bicycle. A cable runs from the hand lever through a spring arrangement to other cables that are connected to the locking devices.

REFERENCES:
patent: 2139397 (1938-12-01), Wigglesworth
patent: 2491121 (1946-10-01), Lozinski
patent: 3156130 (1964-11-01), Gant
patent: 3890847 (1975-06-01), Dian
patent: 4198873 (1980-04-01), Nagano et al.
patent: 4226132 (1980-10-01), Nagano et al.
patent: 4305711 (1981-12-01), Lannoch
patent: 4507101 (1985-03-01), Nagano
patent: 4552546 (1985-11-01), Ishikawa
patent: 4573949 (1986-03-01), Nagano
patent: 4610644 (1986-09-01), Nagano
patent: 4637809 (1987-01-01), Nagano
patent: 4699605 (1987-10-01), Jona

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