Front sprocket wheel having chain guard for bicycles

Details Front sprocket wheel having chain guard for bicycles Front sprocket wheel having chain guard for bicycles

1982-05-07

1984-10-09

Staab, Lawrence J.

Endless belt power transmission systems or components

Guard or housing for belt or pulley

474160, B62J 1300

Patent

active

044758944

ABSTRACT:
A front sprocket wheel for bicycles which comprises an annular member in the form of an integral molding made of plastics or the like and including a chain guard, an outer gear and support arms, and a plate member made of an integral metal plate and including a boss portion, an inner gear positioned around the boss portion and connecting arms interconnecting the boss portion and the inner gear. The support arms of the annular member are fixed to the connecting arms of the plate member.

REFERENCES:
patent: 3477303 (1969-11-01), Brilando
patent: 3550465 (1970-12-01), Maeda
patent: 3610066 (1971-10-01), Rychlik
patent: 3815439 (1974-06-01), Tarutani
patent: 3835729 (1974-09-01), Tarvtani
patent: 4009621 (1977-03-01), Segawa
patent: 4044621 (1977-08-01), McGregor, Sr. et al.
patent: 4106357 (1978-08-01), Segawa

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