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公开(公告)号：US11628488B2
公开(公告)日：2023-04-18
申请号：US17241623
申请日：2021-04-27
发明人： Chin-Chung Chang
摘要： A method for manufacturing an operation rod of a wrench assembly for disassembling a fan clutch, including following steps of: preparing a rod material; fixing the rod material on a forging mold; carrying out a forging process to produce a semi-finished head; carrying out a cutout process, cutting the remainder structure out of the semi-finished head; obtaining a finished product of a head portion, the head portion including two wing plates and a shaft which are integrally formed.
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公开(公告)号：US20220339693A1
公开(公告)日：2022-10-27
申请号：US17241623
申请日：2021-04-27
发明人： CHIN-CHUNG CHANG
摘要： A method for manufacturing an operation rod of a wrench assembly for disassembling a fan clutch, including following steps of: preparing a rod material; fixing the rod material on a forging mold; carrying out a forging process to produce a semi-finished head; carrying out a cutout process, cutting the remainder structure out of the semi-finished head; obtaining a finished product of a head portion, the head portion including two wing plates and a shaft which are integrally formed.
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公开(公告)号：US20220305623A1
公开(公告)日：2022-09-29
申请号：US17215695
申请日：2021-03-29
发明人： CHIN-CHUNG CHANG
摘要： A fan clutch wrench is provided, including a rod and a driving member. The driving member includes a longitudinal direction and a thickness direction, two opposite ends of the driving member on the longitudinal direction are respectively defined as a first end and a second end, the second end is rotatably connected to the rod, an engagement hole penetrates through the first end in the thickness direction, the engagement hole penetrates through the first end to form a first lateral opening along a direction which is lateral to the thickness direction and lateral to the longitudinal direction, and the first lateral opening is for a fastener of a fan clutch to pass therethrough to be engaged with the engagement hole.
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