Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Reexamination Certificate
2005-05-31
2005-05-31
Look, Edward K. (Department: 3745)
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
C091S37600A
Reexamination Certificate
active
06899010
ABSTRACT:
A valve body2is connected to a power piston, which divides a housing into a constant pressure chamber (negative pressure) and a variable pressure chamber. In the valve body2,there is provided a brake assisting mechanism10between a reaction disk3and a plunger9.A poppet seal12is opened by movement of the plunger9,to thereby introduce atmospheric air into the variable pressure chamber and generate a thrust force in the power piston. During rapid braking, a plunger rod23advances relative to a sleeve21,and balls30shift outward and the plunger rod23directly abuts against a reaction rod22,resulting in contraction of the brake assisting mechanism10.Therefore, the amount of movement of the plunger9can be increased without being affected by a reaction force from the reaction disk3,thus enabling rapid development of servo power.
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Endo Mitsuhiro
Nakamura Tadaaki
Takahashi Tetsuya
Takayama Toshio
Watanabe Shuzo
Kabushiki Kaisha Hitachi Seisakusho
Kershteyn Igor
Look Edward K.
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