| 摘要 |
A vacuum augmentation device having an outer shell divided into two chambers by means of a diaphragm, the diaphragm being adapted to be subjected to a differential pressure on the opposite sides thereof which is transferred through a piston plate on one face of a plurality of reaction levers to an output rod to produce a reaction force which is transferred to the other face of the reaction levers and then to an input rod and a metal mounting plate member interposed between the piston plate and reaction levers and having fulcrum pin retention pawls and fulcrum pin engaging pawls engaging the ends of fulcrum pins for preventing fulcrum pins from coming off the mounting plate member.
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