| 摘要 |
A method of manufacturing a shell (10) for a vacuum brake booster wherein a reinforcing plate (22) is coined to the shape of the end member (16) to provide structural strength for uniformly transmitting forces from a reaction member to the body (16) of the shell. After the reinforcing plate (22) is coined, holes (36, 38) are simultaneously punched through the plate (22) and end member (16) for fastener (40, 42) means through which the brake booster is attached to the reaction member.
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