A hydraulic disc braking system is disclosed. The system has a manually operated control device for a cyclist to issue a braking command. The system has a master cylinder assembly having a membrane dividing the hydraulic fluid tank into a variable volume filled chamber and a complementarily variable volume empty chamber. A membrane detector senses the presence of the membrane relative to a predetermined position in the tank and/or a meter measures the distance of the membrane from the ceiling of tank.

A control device for a bicycle has a housing configured to be mountable to the bicycle and sized and shaped to be grasped by a user's hand and a battery receptacle positioned on the housing. The housing has a base portion and an extension portion. The base portion includes first and second ends, a downward facing side, an upward facing side, an inward facing side, an outward facing side, and a handlebar clamp disposed at the first end. A battery receptacle is positioned on a first side, which can be the downward facing side, of the base portion of the housing. An accessory port can be positioned on a second side of the base portion of the housing, different from the first side, and which can be the inward or outward facing side of the base portion of the housing.

A control device for a bicycle has a housing configured to be mountable to the bicycle and sized and shaped to be grasped by a user's hand and a battery receptacle positioned on the housing. The housing has a base portion and an extension portion. The base portion includes first and second ends, a downward facing side, an upward facing side, an inward facing side, an outward facing side, and a handlebar clamp disposed at the first end. A battery receptacle is positioned on a first side, which can be the downward facing side, of the base portion of the housing. An accessory port can be positioned on a second side of the base portion of the housing, different from the first side, and which can be the inward or outward facing side of the base portion of the housing.

An operating device comprises a base member and an operating member. The base member includes a base body and a mounting part. The mounting part includes a mounting contact surface contactable with a tubular part of the human-powered vehicle in a mounting state where the mounting part couples the base body to the tubular part of the human-powered vehicle. The base member includes a first contact surface and a second contact surface. The first contact surface is contactable with the tubular part of the human-powered vehicle in the mounting state. The first contact surface is spaced apart from the mounting contact surface in an axial direction. The second contact surface is contactable with the tubular part of the human-powered vehicle in the mounting state. The second contact surface is spaced apart from the mounting contact surface and the first contact surface in the axial direction.

An operating device comprises a base member and an operating member. The base member includes a base body and a mounting part. The mounting part includes a mounting contact surface contactable with a tubular part of the human-powered vehicle in a mounting state where the mounting part couples the base body to the tubular part of the human-powered vehicle. The base member includes a first contact surface and a second contact surface. The first contact surface is contactable with the tubular part of the human-powered vehicle in the mounting state. The first contact surface is spaced apart from the mounting contact surface in an axial direction. The second contact surface is contactable with the tubular part of the human-powered vehicle in the mounting state. The second contact surface is spaced apart from the mounting contact surface and the first contact surface in the axial direction.

The invention relates to a protective device to be utilized on the handlebar of a vehicle equipped with control levers mounted on the handlebar adjacent to the handlebar grips. The device of the invention prevents control levers from imparting damage to the surroundings when the vehicle is transported. The device of the invention further protects the control levers and grips from damage by contact with nearby objects during transportation of the vehicle. The device of the invention further keeps a brake control lever in the fully pulled position, thus actuating the brake and preventing rotation of the braked wheel or wheels.

An electrical switch device includes an electrical switch unit, a wireless communicator, a power source, an electrical cable, and a connecting part. The electrical switch unit is at least partly disposed outside of a handlebar. The wireless communicator is inserted to an internal space of the handlebar. The power source and the wireless communicator are separated away from the electrical switch unit and arranged at different positions from the electrical switch unit. The electrical cable is configured to electrically connect the electrical switch unit to the wireless communicator and the power supply. The connecting part is electrically connected to the electrical cable. The connecting part is configured to electrically and detachably connect the electrical switch unit to the wireless communicator and the power supply.

A control device comprises two brake master cylinders (13, 14), both of which may be operated simultaneously by the same single manual control lever (15), according to a combined or integral braking mode. A switching element (27), associated with the manual control lever (15), may exclude one (14) of the two brake master cylinders.

An operating device for a human-powered vehicle includes a base member and an operating member. The base member includes a first end portion, a second end portion, a base body, and an accommodating structure. The first end portion is configured to be coupled to a handlebar. The second end portion is opposite to the first end portion. The base body is configured to accommodate at least one of a hydraulic unit. The accommodating structure is configured to accommodate at least one of circuitry accommodating part and a power-supply accommodating part. The operating member is pivotally coupled to the base member about a pivot axis. The accommodating structure is a separate member from the base body. The accommodating structure is detachably attached to the base body at the second end portion.

An operating device for a human-powered vehicle includes a base member and an operating member. The base member includes a first end portion, a second end portion, a base body, and an accommodating structure. The first end portion is configured to be coupled to a handlebar. The second end portion is opposite to the first end portion. The base body is configured to accommodate at least one of a hydraulic unit. The accommodating structure is configured to accommodate at least one of circuitry accommodating part and a power-supply accommodating part. The operating member is pivotally coupled to the base member about a pivot axis. The accommodating structure is a separate member from the base body. The accommodating structure is detachably attached to the base body at the second end portion.