Patent ID: 11933201
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 2:
3. A method for manufacturing a valve timing adjustment device according to claim 1, the method comprising assembling the assist spring by
fixing the outer peripheral end portion to the first rotating body,
rotating the innermost periphery, reducing a diameter of the outermost periphery, and fitting the outermost periphery to an inner peripheral side of the rib,
rotating the holder, matching a position of a shape of the outer periphery of the holder and a position of a shape of the innermost periphery, fitting the innermost periphery to the outer periphery of the holder, and engaging the inner peripheral end portion with the holder, and
rotating the holder and fitting the two-surface width of the holder to the two-surface width portion of the second rotating body.