| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 303000000 | CHARGING | 6 |
| 303057000 | Plurality of pressures | 2 |
| 20090008989 | Fluid Pressure Booster - In a fluid pressure booster, when an input shaft and a valve plunger advance, an atmosphere valve opens to introduce air into a variable pressure chamber. At this time, the input shaft has not moved by a predetermined stroke, and thus a projection of the valve plunger is positioned within an inner peripheral surface of a control valve body, thus forming an orifice, which causes air to be sucked at a restricted flow rate. As a result, generation of noise is suppressed. When the input shaft moves the predetermined stroke, the projection of the valve plunger is positioned away from the inner peripheral surface of the control valve body and the orifice is no longer formed. Accordingly, the flow rate of the air is not restricted by the orifice, and thus a relatively large amount of air is sucked into and introduced into the pressure variation chamber. | 01-08-2009 |
| 20150130267 | CONTROL VALVE DEVICE FOR A RAIL VEHICLE BRAKE - A control valve device for a highly available pneumatic brake system for a rail vehicle, having a compressed-air inlet which is or can be connected to an outlet of a discharge valve device; a compressed-air outlet which is or can be connected to a relay valve device; and a safety input which is or can be connected to a compressed-air source; wherein the control valve device fluidically connects the safety inlet to the compressed-air outlet in a first switching position and fluidically connects the compressed-air inlet to the compressed-air outlet in a second switching position; wherein the control valve device can modify the inlet pressure in the second switching position in accordance with a control device, in order to provide the outlet pressure. | 05-14-2015 |
| 303066000 | Control pipe | 4 |
| 20140265547 | Vehicle Brake System With Dual Acting Plunger Assembly - A plunger assembly for use as a pressure source for a brake system includes a housing having first and second ports. A motor is mounted on the housing for driving an actuator. A piston is connected to the actuator. The piston is slidably mounted within the housing. The piston pressurizes a first chamber when the piston is moving in a first direction to provide fluid out of the first port. The piston pressurizes a second chamber when the piston is moving in a second direction to provide fluid out of the second port. | 09-18-2014 |
| 20150145323 | ABDX-C SERVICE GRADUATING VALVE AND SLIDE VALVE AND SLIDE VALVE DESIGN INCORPORATING ACCELERATED APPLICATION VALVE (AAV) FUNCTIONALITY - 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. | 05-28-2015 |
| 20160016571 | VEHICLE BRAKE SYSTEM HAVING PLUNGER POWER SOURCE - A brake system includes first and second wheel brakes, a reservoir, and a brake pedal unit having a housing and a pair of output pistons slidably disposed in the housing. The output pistons generate brake actuating pressure during a manual push-through mode for actuating the first and second wheel brakes. The system further includes a plunger assembly having a housing having first and second ports, a motor driving an actuator, and a piston connected to the actuator. The piston pressurizes a first chamber when the piston is moving in a first direction to provide fluid flow out of the first port. The piston pressurizes a second chamber when the piston is moving in a second direction opposite the first direction to provide fluid flow out of the second port. The first and second ports are selectively in fluid communication with the wheel brakes. | 01-21-2016 |
| 20160023645 | Control System for Rail Car Parking Brake - A parking brake control system positioned upstream of a rail car parking brake locking mechanism that prevents the parking brake from disengaging until the braking system recharges to a sufficient point that it can be used to maintain the train on a grade. The system includes a three way valve that reduces the brake pipe pilot pressure supplied to the parking brake unlocking system until the brake pipe pressure reaches a predetermined threshold. A release delay system may be coupled to the parking brake control system to retard the rate at which the parking brakes of rail cars positioned near the head of a train are released to ensure that the parking brakes of the entire train are released at about the same time. | 01-28-2016 |
