公开(公告)号：US09616872B2

公开(公告)日：2017-04-11

申请号：US14397281

申请日：2013-05-08

申请人： WABTEC HOLDING CORP.

发明人： Jeffrey B. Skweres ,  Gary M. Sich ,  Michael S. Plechey

IPC分类号： B60T15/30 ,  B60T15/02 ,  B60T13/66 ,  B60T17/22

CPC分类号： B60T15/022 ,  B60T13/665 ,  B60T15/021 ,  B60T17/228

摘要： A main piston assembly for a service valve portion of a brake control valve for a railway vehicle braking system includes a service graduating valve and a service slide valve. The graduating valve includes a first side having a porting pattern defined therein. The service slide valve includes a graduating valve seat having a porting pattern in a first side and a service slide valve face having a porting pattern in an opposing second side. The porting patterns of the first side of the graduating valve, the graduating valve seat, and the service slide valve face are configured to perform an accelerated application valve function venting brake pipe pressure to atmosphere and to direct pressure from an accelerated release reservoir to the service graduating valve to discontinue the accelerated application valve function when a slight brake pipe over-reduction condition exists.

公开(公告)号：US20150145323A1

公开(公告)日：2015-05-28

申请号：US14397281

申请日：2013-05-08

申请人： WABTEC HOLDING CORP.

发明人： Jeffrey B. Skweres ,  Gary M. Sich ,  Michael S. Plechey

IPC分类号： B60T15/02

CPC分类号： B60T15/022 ,  B60T13/665 ,  B60T15/021 ,  B60T17/228

摘要： A main piston assembly for a service valve portion of a brake control valve for a railway vehicle braking system includes a service graduating valve and a service slide valve. The graduating valve includes a first side having a porting pattern defined therein. The service slide valve includes a graduating valve seat having a porting pattern in a first side and a service slide valve face having a porting pattern in an opposing second side. The porting patterns of the first side of the graduating valve, the graduating valve seat, and the service slide valve face are configured to perform an accelerated application valve function venting brake pipe pressure to atmosphere and to direct pressure from an accelerated release reservoir to the service graduating valve to discontinue the accelerated application valve function when a slight brake pipe over-reduction condition exists.

摘要翻译： 一种用于铁路车辆制动系统的制动控制阀的维修阀部分的主活塞组件包括一个工作分级阀和一个工作滑阀。 分级阀包括其中限定有端口图案的第一侧。 所述工作滑阀包括具有在第一侧中的移动模式的分级阀座和在相对的第二侧具有移动模式的操作滑阀面。 分级阀，刻度阀座和操作滑阀面的第一侧的移动模式被配置为执行加速的施加阀功能，以将制动管的压力排放到大气中并将来自加速释放储存器的压力引导到服务 当存在轻微的制动管过度还原状况时，该调节阀停止加速的施加阀功能。

公开(公告)号：US20150144825A1

公开(公告)日：2015-05-28

申请号：US14402317

申请日：2013-05-24

申请人： WABTEC HOLDING CORP.

发明人： Jeffrey B. Skweres ,  Michael S. Plechey ,  Gary M. Sich

IPC分类号： B60T15/02

CPC分类号： B60T15/021 ,  B60T15/42

摘要： A main piston bushing for a service valve portion of a brake control valve includes a cylindrical sidewall defining a central passageway extending longitudinally through the main piston bushing, the central passageway being surrounded by an internal surface of the cylindrical sidewall. The central passageway is configured to receive the main piston assembly of the service valve portion. The internal surface of the cylindrical sidewall includes a first ramp and a second ramp defined therein, the first ramp and the second ramp being configured to engage a portion of the main piston assembly of the service valve portion to restrain movement of the main piston assembly.

摘要翻译： 用于制动控制阀的维修阀部分的主活塞衬套包括圆柱形侧壁，其限定纵向延伸穿过主活塞衬套的中心通道，中心通道被圆柱形侧壁的内表面包围。 中心通道构造成接纳维修阀部分的主活塞组件。 圆柱形侧壁的内表面包括第一斜面和限定在其中的第二斜面，第一斜面和第二斜面构造成接合维修阀部分的主活塞组件的一部分以限制主活塞组件的运动。

公开(公告)号：US09555790B2

公开(公告)日：2017-01-31

申请号：US14402317

申请日：2013-05-24

申请人： WABTEC HOLDING CORP.

发明人： Jeffrey B. Skweres ,  Michael S. Plechey ,  Gary M. Sich

IPC分类号： F16K11/065 ,  B60T15/02 ,  B60T15/42

CPC分类号： B60T15/021 ,  B60T15/42

摘要： A main piston bushing for a service valve portion of a brake control valve includes a cylindrical sidewall defining a central passageway extending longitudinally through the main piston bushing, the central passageway being surrounded by an internal surface of the cylindrical sidewall. The central passageway is configured to receive the main piston assembly of the service valve portion. The internal surface of the cylindrical sidewall includes a first ramp and a second ramp defined therein, the first ramp and the second ramp being configured to engage a portion of the main piston assembly of the service valve portion to restrain movement of the main piston assembly.

摘要翻译： 用于制动控制阀的维修阀部分的主活塞衬套包括圆柱形侧壁，其限定纵向延伸穿过主活塞衬套的中心通道，中心通道被圆柱形侧壁的内表面包围。 中心通道构造成接纳维修阀部分的主活塞组件。 圆柱形侧壁的内表面包括第一斜面和限定在其中的第二斜面，第一斜面和第二斜面构造成接合维修阀部分的主活塞组件的一部分以限制主活塞组件的运动。