| 摘要 |
Radially-extending flanges (23) of a diaphragm plate (10) attached to a rolling diaphragm (11) of a vacuum booster (1) extend through slots in a booster casing reinforcing tube (5) and are attached to a sleeve (21) of a control valve (15), the distance "a" between the rolling diaphragm and one end of the slots being at least equal to half of the power stroke of the diaphragm plate (10). <IMAGE> |
