| 发明名称 |
SERVICE MAIN PISTON BUSHING CONTAINING TWO SPRING RAMPS |
| 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. |
| 申请公布号 |
US2015144825(A1) |
申请公布日期 |
2015.05.28 |
| 申请号 |
US201314402317 |
申请日期 |
2013.05.24 |
| 申请人 |
WABTEC HOLDING CORP. |
发明人 |
Skweres Jeffrey B.;Plechey Michael S.;Sich Gary M. |
| 分类号 |
B60T15/02 |
主分类号 |
B60T15/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A main piston bushing for a service valve portion of a brake control valve, the main piston bushing comprising:
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, wherein the central passageway is configured to receive the main piston assembly of the service valve portion, and wherein 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. |
| 地址 |
Wilmerding PA US |
