A control device of a bicycle hydraulic brake, comprising a cylinder, a tank, a piston slidably mounted in the cylinder to move between at least one first rest position in which the cylinder and the tank are in fluid communication and at least one second position in which the piston interrupts the fluid communication between the cylinder and the tank, a stop device that acts directly or indirectly on the piston. The cylinder and the tank are filled with hydraulic fluid and the stop device can take up a storage and transportation configuration in which it arranges the piston in said at least one second position.

A piston boot has an annular fitting section which is formed on one end side of a bellows section, encloses an annular metallic member and is fitted to a stepped section. The fitting section has an outer peripheral surface section which comes into contact with an inner peripheral surface of the stepped section, and an annular plane section which comes into contact with an annular wall surface section of the stepped section. A plurality of holes each having a bottom surface at a position of the metallic member or a position near the metallic member are opened to the plane section.

A braking assembly for an air disc brake comprises an actuator assembly having a service portion, at least one mounting stud attached to the service portion, and an air disc brake caliper having a bore for receiving the at least one mounting stud. The mounting stud is pivotable with respect to the service portion for installation on the air disc brake caliper.

A brake actuator plate assembly includes an electromechanical brake actuator, a connector configured to communicatively couple with an aircraft, a wire harness configured to terminate at the connector and conduct at least one of a voltage or a current to and from an actuator motor, and an actuator plate comprising a wire harness channel configured to house the wire harness.

A cam mechanism includes an input member and an output member and a second cam groove is provided on a surface of the output member. The cam mechanism is configured to sandwich a rolling element accommodated in the second cam groove. The second cam groove has; a first region provided such that an inclination angle, relative to a rotary surface, of a bottom face of the second cam groove on which the rolling element makes rolling contact at the time when a phase difference is not more than a predetermined amount, is increased; and a second region provided such that the inclination angle, relative to the rotary surface, of that bottom face of the second cam groove with which the rolling element makes rolling contact at the time when the phase difference is more than the predetermined amount, is smaller than a largest inclination angle in the first region.