A hydraulic operating device for a fluid of a cycle or of a motorcycle hydraulic system including a body, a first chamber carved in the body adapted to house an actuating piston, a second tank-chamber carved in the body and in fluid communication with said first chamber, a floating plug, a sphere, an elastic element, a rear sealing element and a rear plug.

The present invention relates to a liquid reservoir for a vehicle that is subjected in service to inclinations in at least two different directions, the reservoir comprising a float well which delimits a bowl containing a float that is able to move depending on the level of liquid in the reservoir. The reservoir is characterized in that the float well comprises at least two retention means positioned successively along a flow path of the liquid as far as the bowl, from the outside toward the inside of the float well, each retention means keeping liquid in the float well if the reservoir is inclined in a set of directions specific to this retention means. The invention also relates to a motor vehicle system comprising such a liquid reservoir and means for binary detection of the level of liquid in the reservoir.

The present invention relates to a liquid reservoir for a vehicle that is subjected in service to inclinations in at least two different directions, the reservoir comprising a float well which delimits a bowl containing a float that is able to move depending on the level of liquid in the reservoir. The reservoir is characterized in that the float well comprises at least two retention means positioned successively along a flow path of the liquid as far as the bowl, from the outside toward the inside of the float well, each retention means keeping liquid in the float well if the reservoir is inclined in a set of directions specific to this retention means. The invention also relates to a motor vehicle system comprising such a liquid reservoir and means for binary detection of the level of liquid in the reservoir.

The present disclosure pertains to a coupling device for coupling a fluid reservoir for a brake fluid with a brake actuation device. The coupling device includes at least one coupling extension provided at the fluid reservoir with a first recess, a second recess configured in the area of an edge of the brake actuation device as well as a hole configured in the brake actuation device and open to the second recess, a bridge element crossing the second recess along the edge of the brake actuation device and a coupling element with at least one striker, wherein, when the fluid reservoir is coupled to the brake actuation device, the hole is aligned with the first recess along a central longitudinal axis of the striker and the striker passes through the first recess and engages with the hole. The present disclosure also pertains to a vehicle brake system equipped with such a coupling device.

A brake system for a vehicle such as a bicycle is disclosed. The brake system may comprise an improved master cylinder assembly configured for adjustment (such as adjustment of the stroke length, stroke start, etc.). The brake system may comprise a caliper assembly with an improved arrangement of flow paths configured to facilitate maintenance (such as to remove/bleed air and/or fluid from the body of the caliper assembly, inspection, etc.); the caliper assembly may also be configured for use with a tool (e.g. configured to fit in body to remove/bleed air and/or fluid from flow paths during maintenance). The master cylinder assembly may be configured (e.g. manufactured/produced, assembled, etc.) so that a setting and/or adjustment of the brake stroke and/or lever action/actuation can be provided by any one independent mechanism or one separate adjustment mechanism (e.g. without any other adjustment mechanism) or by a combination of adjustment mechanisms (e.g. in a combination with one or more adjustment mechanism); operation of a mechanism for setting and/or adjusting the brake stroke (e.g. travel of piston) may comprise engagement of a pushrod; the mechanism may comprise a feature configured to engage the pushrod (e.g. by direct action on the pushrod or a feature of the pushrod or by indirect action through a link, adjuster, etc. configured to engage the pushrod). The master cylinder assembly may be configured to be set and/or adjusted/tuned within the indicated range to provide an intended performance and/or feel for the operator at the brake lever (e.g. at an adjuster, link, etc.).

A hydraulic master apparatus, in particular, for a hydraulic brake or clutch of handlebar-guided vehicles with a lever, which is pivotally mounted in a support, and a hydraulic cylinder, which can be disposed in a handlebar tube of the handlebar-guided vehicle and has a piston movably disposed therein, wherein a central valve is disposed in the piston.

A hydraulic brake arrangement for a bicycle with a transmitting unit with a brake lever, and a cylinder housing with a cylinder space, and with a piston unit displaceably received in the cylinder space. In the tank space of an equalizing reservoir device, a membrane unit is disposed which subdivides the tank space into a fluid space for the hydraulic fluid and an air space sealed against the fluid space. The air space is connected with atmosphere through a vent opening. When the membrane unit is mounted, a filling mouth is in fluid connection with the fluid space. The vent opening opens into a receiving space that is at least partially enclosed by the base body of the transmitting unit. In the receiving space, an actuating mechanism is disposed which transmits force from the brake lever to the piston unit.

For fastening an mounting part to a hydraulic block of a hydraulic power unit of a hydraulic power vehicle braking system, holes are configured in a fastening flange of the mounting part with collars, which are clampingly inserted in mounting holes of the hydraulic block. A perforated disk is situated on the fastening flange as a fastening part and is fastened by screws screwed into the mounting holes of the hydraulic block.

A brake system with a wheel brake has a fluid reservoir and a valve assembly in fluid communication with the reservoir via a first conduit. The valve assembly is in fluid communication with the wheel brake via a second conduit. The valve assembly includes a bypass valve which only permits fluid flow from the first conduit to the second conduit when the fluid pressure within the first conduit is above a predetermined pressure level above atmospheric pressure. The valve assembly further includes a check valve in a parallel path arrangement relative to the bypass valve such that the check valve permits fluid flow from the second conduit to the first conduit, and prevents fluid flow from the first conduit to the second conduit. The brake system further includes a first source of pressurized fluid providing fluid pressure for actuating the wheel brake, wherein the first source of pressurized fluid is selectively in fluid communication with the second conduit.

A method of assembling a power brake assembly including a brake booster and a master cylinder defining a chamber disposed between at least one reservoir port and at least one brake line port begins by inserting the master cylinder into the brake booster. The method proceeds by monitoring for a pressure differential between the at least one reservoir port and the at least one brake line port of the master cylinder during the insertion step, and then ceasing insertion of the master cylinder into the brake booster in response to sensing a pressure differential. The method proceeds by withdrawing the master cylinder a distance from within the brake booster; and securing the brake booster to the master cylinder after retracting the master cylinder the distance.