Wells – Expansible anchor or casing
Patent
1993-09-03
1994-09-13
Bui, Thuy M.
Wells
Expansible anchor or casing
166212, F16G 1302
Patent
active
053460065
ABSTRACT:
An outer chain plate for a bicycle drive chain includes an elongated plate body with upper and lower edges, two end portions formed with a respective hole, and a waist portion interconnecting the end portions. The plate body has an outer face which is formed with a generally S-shaped longitudinal recess that includes a straight connecting portion formed in the waist portion, and insert portions which are disposed on two ends of the straight connecting portion and which surround a respective one of the holes. The longitudinal recess has two open ends which extend respectively from the insert portions and which open in opposite directions toward a respective one of the upper and lower edges of the plate body. The plate body further has an inner face which is formed with a generally S-shaped longitudinal projection. The longitudinal projection has a shape that corresponds to that of the longitudinal recess and includes a connecting portion formed in the waist portion and two flat portions which are disposed on two ends of the connecting portion and which surround a respective one of the holes.
REFERENCES:
patent: 4265134 (1981-05-01), Dupoyet
patent: 4642078 (1987-02-01), Dupoyet
patent: 5073153 (1991-12-01), Wu
Bui Thuy M.
KMC Chain Industrial Co., Ltd.
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