Abstract: A two stage brake actuation system including a push rod, a first actuator coupled to the push rod, and a second actuator. The first actuator may apply a first force to the push rod to move it between a brake clearance position and a brake adjacent position. The second actuator may apply a second force to the push rod to move it between the brake adjacent position and a brake applied position. The first actuator may be a large displacement, low force actuator, and the second actuator may be a small displacement, high force actuator. A method for braking a vehicle by applying a first force to a push rod to move it a first distance from a brake clearance to a brake adjacent position, and applying a second force to the push rod to move it a second distance from the brake adjacent to a brake applied position.

Abstract: A drive unit for operating a device, in particular a device in a vehicle and a method for operating a drive unit are provided. An electrical drive assembly and a break assembly are combined and arranged together in a common housing. The breaking assembly could be a mechanical breaking assembly or an electrical break assembly. The break assembly automatically locks the shaft of the electrical drive assembly and thus provides self-locking capabilities.

Abstract: An electric motor having a housing with a housing interior and also with an electronics compartment for a motor electronics system is provided. The housing has a housing base and a housing wall. The electronics compartment is arranged between the housing wall and a housing cover. The housing cover has a ventilation opening for venting the housing interior. The electronics compartment has a ventilation channel which is routed into the housing interior via the housing wall and has a channel connection piece which issues into the ventilation opening of the housing cover and is closed by an air-permeable diaphragm.

Abstract: An electric motor having a housing with a housing interior and also with an electronics compartment for a motor electronics system is provided. The housing has a housing base and a housing wall. The electronics compartment is arranged between the housing wall and a housing cover. The housing cover has a ventilation opening for venting the housing interior. The electronics compartment has a ventilation channel which is routed into the housing interior via the housing wall and has a channel connection piece which issues into the ventilation opening of the housing cover and is closed by an air-permeable diaphragm.