MANUFACTURING METHOD, PRODUCT OF BICYCLE FRAME UNIT AND PRESTRUCTURE OF BICYCLE FRAME ADAPTABLE FOR DIFFERENT MOTOR SYSTEMS
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United States of America Patent
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Issued Date -
Aug 3, 2023
app pub date -
Jan 13, 2023
filing date -
Jan 28, 2022
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Abstract
A manufacturing method of a bicycle unit has the following steps. In a pressing step: press metal sheets to form casing parts being overlappable. In an abutting step: abut the casing parts to form an abutting line. In a connecting step: connecting the two casing parts along the abutting line to form a motor mount prestructure having side plates and a motor-installation space formed therebetween. A prestructure of a bicycle frame is thereby made. In a motor mount forming step: cut the two side plates of the motor mount prestructure in compliance with a pre-determined motor system so as to form a bicycle frame unit with a motor mount.
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