| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 303000000 | RELEASING | 10 |
| 303068000 | Motor | 5 |
| 303069000 | Quick | 2 |
| 20160046273 | Brake Cylinder Limiting Valve - A brake cylinder limiting valve having a first portion that determines actual brake cylinder pressure and a second portion that determines intended brake cylinder pressure based on brake pipe pressure reduction. The two portions are combined so that brake cylinder pressure will be vented if the actual brake cylinder pressure exceeds intended brake cylinder pressure by a predetermined threshold amount, which is preferably two and one-half times the brake pipe pressure reduction. An exhaust cut-off valve may be used to prevent venting of the brake cylinder pressure if it falls below a predetermined value. | 02-18-2016 |
| 20160068149 | Brake system depletion valve - An air brake valve designed to remove the air from a vehicle air brake system in order to apply parking brakes in a manner to prevent unauthorized release of said brakes, and to achieve regulatory pre-trip and D.O.T. inspection of system low pressure warning indicator as well as regulatory after trip parking procedures for school busses. | 03-10-2016 |
| 303071000 | Fluid-pressure retracting | 2 |
| 20150084403 | DUAL PRESSURE CONTROL FOR A ROTOR BRAKE ACTUATOR FOR VERTICAL LIFT AIRCRAFT - In some aspects, a master cylinder assembly for vertical lift aircraft is configured to move pressurized fluid through a conduit in response to applied movement of an input lever. A low pressure relief valve can be connected to a first conduit to limit pressure to a low level. An isolation valve can be connected to the first conduit and configured to isolate the low pressure relief valve from the conduit when engaged. A high pressure relief valve can be connected to a second fluid conduit to limit pressure to a high level. In some aspects, a rotor brake actuator is fluidly connected to the first conduit and the second conduit and configured to engage a rotor brake in response to hydraulic fluid pressure. | 03-26-2015 |
| 20160167620 | VEHICLE CONTROL SYSTEM AND METHOD | 06-16-2016 |
| 303075000 | Preventers | 1 |
| 303078000 | Auxiliary-reservoir control | 1 |
| 20080284241 | Combined Service Brake and Spring-Loaded Brake Cylinder with Internal Ventilation - A combined service brake and spring-loaded brake cylinder includes an air-bleed valve having a piston supporting a valve body, which is guided inside a cylinder in an axially displaceable manner, and at least one first pressure spring supported on the piston being loaded against a first valve seat on the piston. The piston is loaded by at least one second pressure spring which is supported on the piston rod, in such a manner that the valve body is pushed toward a second valve seat on the piston rod and away from the first valve seat. A first piston area of the piston is loaded by the pressure in the spring chamber in a direction that lifts the valve body from the second valve seat and a second piston area by the pressure inside the service brake chamber in a direction that pushes the valve body toward the second valve seat and lifts it from the first valve seat, whereby a flow connection is established between the service brake chamber and the spring chamber by the valve seat and/or when the valve seat is lifted from the second valve seat. | 11-20-2008 |
| 303080000 | Auxiliary reservoir | 1 |
| 20090160246 | CONTROL COMPONENT FOR HYDRAULIC CIRCUIT INCLUDING SPRING APPLIED-HYDRAULICALLY RELEASED BRAKE - A control for use in a hydraulic circuit where the control can act as a valve and an auxiliary pressure source for the hydraulic circuit. | 06-25-2009 |
| 303081000 | Control pipe | 4 |
| 20150307072 | METHOD FOR OPERATING A BRAKING SYSTEM OF A VEHICLE, AND CONTROL DEVICE FOR A BRAKING SYSTEM OF A VEHICLE - A method for operating a braking system includes: limiting a brake pressure buildup in a brake circuit of the braking system to a response pressure of a storage volume of the brake circuit by controlling a first wheel outlet valve of a first wheel brake cylinder of the brake circuit into an opened state at least temporarily during an increasing activation intensity of an activation of a brake actuating element connected to a master break cylinder; providing an additional reduction of a brake pressure in the brake circuit to below the response pressure during a constant activation intensity by controlling the first wheel outlet valve into a closed state; and activating a brake booster in such a way that an internal pressure present in the master brake cylinder is reduced with the aid of the activated brake booster. | 10-29-2015 |
| 20150307073 | METHOD FOR OPERATING A BRAKING SYSTEM OF A VEHICLE, AND CONTROL DEVICE FOR A BRAKING SYSTEM OF A VEHICLE - In a method for operating a braking system of a vehicle by limiting brake pressure buildup during an activation of a brake actuating element, the rear wheel outlet valves of the rear wheel brake cylinders, which are respectively associated with a rear wheel of the vehicle, are controlled, at least temporarily, into an open state during the activation of the brake actuating element, and the front wheel inlet valves of the front wheel brake cylinders, which are respectively associated with a front wheel of the vehicle, are controlled, at least temporarily, into a closed state during the control of the rear wheel outlet valves into the open state. | 10-29-2015 |
| 303082000 | By action of control-pipe pressure | 2 |
| 20090218880 | Brake Control Valve With AAV Stability - A vent valve made from a standard emergency brake valve portion. It includes an emergency portion body with an interface to be mated with the emergency portion interface of the pipe bracket. The body includes a casting with at least one cover and the casting including all the cast cavities and passages for an emergency portion. A vent valve selectively connects a first brake pipe port to a vent port on the body, A vent piston controls the vent valve and a discharge valve pneumatically controls the vent piston. An emergency piston is responsive to brake pipe pressure for controlling the discharge valve. The body does not include at least one of an inshot valve and an accelerated application valve. | 09-03-2009 |
| 20140054956 | Multi-Circuit Protection Valve for a Compressed-Air Supply Device of a Vehicle, and Method for Operating a Multi-Circuit Protection Valve - A multi-circuit protection valve is provided for a vehicle compressed-air supply device. A first port for a service brake includes two mutually separate service brake circuit ports for a first service brake circuit and a second service brake circuit. The two service brake circuit ports are protected by first and second service brake circuit overflow valves, respectively. A second port for a parking brake, is protected by an overflow valve, wherein one of the two service brake circuits can be filled preferentially. The overflow valve has two active surfaces which can be acted on with a valve inlet pressure and a valve outlet pressure, respectively. The overflow valve has a third active surface, which is acted on with the service brake pressure from the non-preferentially filled service brake circuit. Forces generated by the three active surfaces counteract a closing force in order to open or hold open the overflow valve. | 02-27-2014 |
