公开(公告)号：US07077481B2

公开(公告)日：2006-07-18

申请号：US10646349

申请日：2003-08-22

申请人： Andrew Marsh ,  John Kemer ,  Charles Eberling ,  Dave Knight ,  Richard T. Ross

发明人： Andrew Marsh ,  John Kemer ,  Charles Eberling ,  Dave Knight ,  Richard T. Ross

IPC分类号： B60T15/02

CPC分类号： B60T15/20 ,  B60T13/261 ,  Y10T137/2278 ,  Y10T137/2544 ,  Y10T137/7845 ,  Y10T137/86919

摘要： A combined spring brake modulating relay valve integrates the functions of a relay valve and a modulating valve. The housing includes a valve assembly movable in response to air pressure provided to selected ports in the housing. A relay piston selectively communicates with a control port and a primary brake circuit port. A modulating piston includes surfaces selectively pressurized by the primary brake circuit port and a secondary brake circuit port. This modulates the pressure from the delivery port to thereby selectively apply the associated spring brakes if a failure is detected at the primary brake circuit port. The exhaust member selectively controls communication between the supply and delivery ports as necessary.

公开(公告)号：US06769744B2

公开(公告)日：2004-08-03

申请号：US09579086

申请日：2000-05-25

申请人： Andrew Marsh ,  John Kemer ,  Charles Eberling ,  Dave Knight ,  Richard T. Ross

发明人： Andrew Marsh ,  John Kemer ,  Charles Eberling ,  Dave Knight ,  Richard T. Ross

IPC分类号： B60T1300

CPC分类号： B60T15/20 ,  B60T13/261 ,  Y10T137/2278 ,  Y10T137/2544 ,  Y10T137/7845 ,  Y10T137/86919

摘要： A combined spring brake modulating relay valve integrates the functions of a relay valve and a modulating valve. The housing includes a valve assembly movable in response to air pressure provided to selected ports in the housing. A relay piston selectively communicates with a control port and a primary brake circuit port. A modulating piston includes surfaces selectively pressurized by the primary brake circuit port and a secondary brake circuit port. This modulates the pressure from the delivery port to thereby selectively apply the associated spring brakes if a failure is detected at the primary brake circuit port. The exhaust member selectively controls communication between the supply and delivery ports as necessary.

公开(公告)号：US20060005878A1

公开(公告)日：2006-01-12

申请号：US11229830

申请日：2005-09-19

申请人： John Kemer

发明人： John Kemer

IPC分类号： B60T13/00

CPC分类号： F15B20/001 ,  B60T13/385 ,  B60T15/041 ,  B60T17/085 ,  B60T17/22 ,  Y10T137/0379 ,  Y10T137/87169

摘要： A valve assembly for an air pressure system includes an inlet valve, a first control valve, and a second control valve. The inlet valve includes an inlet port, an outlet port and a control port. The inlet valve inlet port communicates with the inlet valve outlet port when the inlet valve control port is above a threshold pressure. The first control valve includes an inlet port, an outlet port, an exhaust port, and a control member. The first control valve inlet port communicates with the inlet valve outlet port. The first control valve outlet port communicates with one of the first control valve inlet port and the first control valve exhaust port as a function of a position of the first control valve control member. The second control valve includes an inlet port, an outlet port, an exhaust port, and a control member. The second control valve inlet port communicates with the inlet valve outlet port. The second control valve outlet port communicates with one of the second control valve inlet port and the second control valve exhaust port as a function of a position of the second control valve control member.