Described herein is a gas-liquid separating gas exchange device comprising a vent mechanism that services gas exchange between the interior and exterior of a housing, a shelter of the vent mechanism distal from the housing that provides shelter of a distal area around the vent mechanism, an area-encompassing abutment rising distally from the housing and encompassing both the vent mechanism and the shelter and creating a fluid-catchment junction between the shelter and the abutment, and at least one fluid-exchange passageway in the at least one shelter allowing fluid exchange between the distal sheltered area and the abutment into the fluid-catchment junction. The gas-liquid separating gas exchange device may separate gas and liquid by gravity, energy of vibration, air-pressure forces, or a combination thereof and facilitates expulsion of contaminating liquid and debris from the housing.

A dissymmetric braking system has at least one right wheel braking device, at least one left wheel braking device, at least one device to apply a braking action, at least one actuating device to transform the braking action into a first pressure, at least one right wheel connection, at least one left wheel connection, and at least one pressure reducing device having at least one transfer device receiving the first pressure. The transfer device transforms the first pressure into a reduced second pressure, whereby avoiding, during the braking action, a fluidic connection between a fluid having the first pressure and a fluid having the second pressure to determine, during the braking action, a relationship between the first pressure and the second pressure with linear trend without variation of linearity throughout the operating field of the pressure reducing device, so that the braking action of one of the right wheel braking device and left wheel braking device is lower than the other.

A dissymmetric braking system has at least one right wheel braking device, at least one left wheel braking device, at least one device to apply a braking action, at least one actuating device to transform the braking action into a first pressure, at least one right wheel connection, at least one left wheel connection, and at least one pressure reducing device having at least one transfer device receiving the first pressure. The transfer device transforms the first pressure into a reduced second pressure, whereby avoiding, during the braking action, a fluidic connection between a fluid having the first pressure and a fluid having the second pressure to determine, during the braking action, a relationship between the first pressure and the second pressure with linear trend without variation of linearity throughout the operating field of the pressure reducing device, so that the braking action of one of the right wheel braking device and left wheel braking device is lower than the other.

The present invention relates to a brake system for a vehicle. The proposed brake system (1) comprises an actuation unit for actuating wheel brakes of the vehicle in a normal operating mode of the brake system (1). Further, the system (1) comprises a brake cylinder (2) for pressurizing the wheel brakes of the vehicle in an emergency operating mode of the brake system (1). The brake cylinder (2) comprises a brake cylinder housing (4) and a push rod (3) being displaceable within the brake cylinder housing (4) by operation of a brake pedal (5). The brake cylinder (2) further comprises a piston (14) movably arranged within the brake cylinder housing (4). The piston (14) has a first surface and a second surface opposite the first surface. A hydraulic chamber (11) is formed within the brake cylinder housing (4) between the first surface of the piston (14) and an inner surface of the brake cylinder housing (4). The hydraulic chamber (11) is configured for being selectively fluidly connected with the wheel brakes. The brake cylinder (2) further comprises an elastic simulator element (13) arranged between the second surface of the piston (14) and the push rod (3) for pedal feel simulation. The brake cylinder (2) further comprises a locking element (22) configured to selectively mechanically couple the push rod (3) with the piston (14) to provide a rigid connection between the push rod (3) and the piston (14) during the emergency operating mode.

The present invention relates to a brake system for a vehicle. The proposed brake system (1) comprises an actuation unit for actuating wheel brakes of the vehicle in a normal operating mode of the brake system (1). Further, the system (1) comprises a brake cylinder (2) for pressurizing the wheel brakes of the vehicle in an emergency operating mode of the brake system (1). The brake cylinder (2) comprises a brake cylinder housing (4) and a push rod (3) being displaceable within the brake cylinder housing (4) by operation of a brake pedal (5). The brake cylinder (2) further comprises a piston (14) movably arranged within the brake cylinder housing (4). The piston (14) has a first surface and a second surface opposite the first surface. A hydraulic chamber (11) is formed within the brake cylinder housing (4) between the first surface of the piston (14) and an inner surface of the brake cylinder housing (4). The hydraulic chamber (11) is configured for being selectively fluidly connected with the wheel brakes. The brake cylinder (2) further comprises an elastic simulator element (13) arranged between the second surface of the piston (14) and the push rod (3) for pedal feel simulation. The brake cylinder (2) further comprises a locking element (22) configured to selectively mechanically couple the push rod (3) with the piston (14) to provide a rigid connection between the push rod (3) and the piston (14) during the emergency operating mode.

The present disclosure relates to a brake cylinder, a brake caliper unit and a rail vehicle. The brake cylinder includes a cylinder block and a cylinder head fixedly sleeved over one end of the cylinder block, the cylinder block being provided therein with a piston, a guide spring, a guide nut, a taper sleeve, an adjusting shaft assembly, a thrust sleeve and a gap adjusting nut assembly; wherein the gap adjusting nut assembly includes a gap adjusting nut, a gap adjusting sleeve and a gap adjusting spring, and a groove extending along an axial direction of the gap adjusting sleeve is formed on an outer circumferential surface of the gap adjusting sleeve, in which groove a release gap adjusting unit is provided. The thrust sleeve spring of the brake cylinder of the present disclosure can recognize excessive elastic deformation of the external lever to prevent the gap adjustment triggered by the excessive elastic deformation of the external lever, ensuring that the release gap of the disc is constant.

The present disclosure relates to a brake cylinder, a brake caliper unit and a rail vehicle. The brake cylinder includes a cylinder block and a cylinder head fixedly sleeved over one end of the cylinder block, the cylinder block being provided therein with a piston, a guide spring, a guide nut, a taper sleeve, an adjusting shaft assembly, a thrust sleeve and a gap adjusting nut assembly; wherein the gap adjusting nut assembly includes a gap adjusting nut, a gap adjusting sleeve and a gap adjusting spring, and a groove extending along an axial direction of the gap adjusting sleeve is formed on an outer circumferential surface of the gap adjusting sleeve, in which groove a release gap adjusting unit is provided. The thrust sleeve spring of the brake cylinder of the present disclosure can recognize excessive elastic deformation of the external lever to prevent the gap adjustment triggered by the excessive elastic deformation of the external lever, ensuring that the release gap of the disc is constant.

A remote caging system and method for remote caging for semi-trailer brakes is provided. The remote caging system comprises a remote control device, and a remote caging apparatus including a transmitter/receiver. The remote caging apparatus is installed on a semi-trailer truck brake. The remote control device sends and receives signals to and from the transmitter/receiver to engage and disengage the brakes.

A spring brake actuator for applying a brake of a vehicle includes a housing containing a diaphragm that separates the housing into first and second chambers. A clutch actuator device is for selectively compressing a compression spring such that the spring brake actuator is operable in a plurality of states including a parking state, driving state, and a braking state.

An electromechanical brake apparatus includes a housing supporting an inboard brake pad and an oppositely facing outboard brake pad for selective frictional contact with a rotor interposed longitudinally therebetween. An adjuster ramp assembly indirectly receives torque from the motor unit. A spindle is provided for selectively moving the inboard brake pad longitudinally. The spindle is operatively connected with the adjuster ramp assembly to indirectly receive torque from the motor unit therethrough. A leading ramp assembly is configured to transmit applied torque from the motor unit to the adjuster ramp assembly via at least one ramp ball longitudinally interposed therebetween. A predetermined amount and direction of torque is applied to each of the adjuster ramp assembly and the leading ramp assembly to assist with a selected one of (1) service brake application and (2) service brake release functions. The electromechanical brake apparatus is operative, at different times, for both functions.