Abstract: A pumping device for a brake device of a bicycle includes a tunnel and a main cylinder directly and respectively disposed in a distal portion of a handlebar of the bicycle. The tunnel is provided to contain oil and the main cylinder is connected to the brake device. The tunnel and the main cylinder communicate with each other via a first hole and a second hole that are respectively defined in the distal portion of the handlebar of the bicycle. A pair of ears extends from a distal end of the handlebar and a lever pivotally connected to the pair of the ears for operating the main cylinder.

Abstract: An adjustable pumping device for a hydraulic brake device of a bicycle includes a body mounted to a handlebar of the bicycle and having a first tunnel defined therein for containing oil. A main cylinder is disposed in the body and pumps oil to the hydraulic brake device of the bicycle. A lever is pivotally mounted to the body and has an adjuster mounted in the lever for adjusting an ineffective stroke of the main cylinder.

Abstract: A position seat for a hydraulic brake device of a bicycle includes a position member mounted to a handlebar of the bicycle and a pumping member partially received in the position member. The pumping member is selectively rotatable relative to the position member. A semi-annular groove is defined in an outer periphery of the pumping member and a locking pin extends through the position member and partially received in the semi-annular groove to prevent the pumping member from detaching from the position portion before being positioned and limit a rotate range of the pumping member relative to the position member.

Abstract: The invention relates to a method for regulating the brake power on the wheels (VR, HR) of a single-track vehicle, using a brake system comprising a wheel brake circuit (RBKVR) having a pressure modulator (RGCVR) for regulating the brake pressure pVR on a front wheel brake (54); a wheel brake circuit (RBKHR) having a pressure modulator (RGVHR) for regulating the brake pressure pHR on a rear wheel brake (54?); at least one control circuit (STKHBZ, STKFBZ) for controlling both pressure modulators (RGVVR, RGVHR); and a control unit (94). According to the invention, the brake pressure pHRnominal in the brake circuit (RBKHR) for the rear wheel (HR) is determined according to the brake pressure pVRactual detected in the brake circuit (RBKVR) for the front wheel (VR)—taking an ideal brake power distribution characteristic stored in the control unit (94) as a basis—and is regulated for the rear wheel (HR) by means of the pressure modulator (RGVVR) in the wheel brake circuit (RBKHR).

Abstract: A hydraulic brake lever includes a body having a bladder chamber, a cavity and a flexible separator mounted between the bladder chamber and the cavity. The flexible separator holds hydraulic oil in a front section of the body and prevents a rear section of the body from contacting with the pressurized hydraulic oil. A cylinder is mounted in the cavity of the body and accommodates a piston set. Thus, a high pressure is kept in the cylinder and is not applied directly on the body. Due to the separating design, the hydraulic oil applied a low pressure on the body. Thus, manufacturing the body is less limited and a manufacturing cost is reduced.

Abstract: A hydraulic brake lever generally includes a brake lever base, a handle hinged to the brake lever base, an oil reservoir and a half cover. The brake lever base may include a connecting portion and a main portion. A top of the connecting portion may be cooperable with the half cover to mount the hydraulic brake lever to a handlebar. The main portion may include a brake lever cylinder. The brake lever cylinder may include a return spring biasing a piston in the brake lever cylinder. The piston may have an outer end hinged with a push rod and another end hinged with the handle. The oil reservoir may be disposed in one side of the connecting portion adjacent the handle, and fluidly coupled to the brake lever cylinder. The position of the oil reservoir may be higher than the position of the brake lever cylinder.

Abstract: A method of adjusting a lever actuated bicycle hydraulic disc brake master cylinder. The disc brake master cylinder has a housing defining a cylinder having first and second ends and a port communicating with a fluid reservoir between the first and second ends. A piston is received in the cylinder and the piston has a seal having a leading seal edge between the piston and the cylinder. The lever is operatively associated with the piston to move the piston from an unactuated position with the leading seal edge a select distance between the port and the first end of the cylinder to an actuated position between the port and the second end of the cylinder.

Abstract: A reservoir apparatus for a bicycle brake lever device comprises a master cylinder and a fluid reservoir including first and second reservoirs. The master cylinder has a master cylinder chamber dimensioned for receiving a master cylinder piston therein. The first reservoir has a first reservoir chamber in fluid communication with the master cylinder chamber for supplying a hydraulic fluid to the master cylinder chamber. At least a portion of the first reservoir chamber is disposed below a portion of the master cylinder chamber. The second reservoir has a second reservoir chamber in fluid communication with the first reservoir chamber, wherein the second reservoir chamber includes an air entrainment surface. The air entrainment surface is positioned higher than an upper surface of the first reservoir chamber.

Abstract: A bicycle brake lever is used on a handlebar of a bicycle and has a body, a hydraulic cylinder, an oil jacket, a cap and a leakage proof element. The body is mounted with the handlebar of the bicycle and has a threaded hole and a lever. The hydraulic cylinder is mounted on the body and has an oil chamber, a piston and an annular groove. The piston is mounted moveably in the oil chamber and is connected with the lever. The annular groove is formed around the external surface of the hydraulic cylinder and has two transmitting holes. The oil jacket is mounted rotatably around the hydraulic cylinder over the annular groove and contacts with the body near the threaded hole and has a tube. The cap is mounted over the opening of the tube. The leakage proof element is mounted between the opening of the tube and the cap.

Abstract: A hydraulic assembly for a hydraulic disc brake system that includes a housing defining a cylinder, a piston received in and moveable within the cylinder, a first lever operatively associated with one of the piston or the cylinder, and a second lever operatively associated with the other of the piston or the cylinder. Moving the first lever pushes one of the piston or the cylinder in a first direction, and moving the second lever pulls the other of the cylinder or the piston in a second direction. In a preferred embodiment, the piston has a non-actuated position and a fully actuated position, and the piston is biased towards the non-actuated position, and wherein the cylinder has a non-actuated and a fully-actuated position, and the cylinder is biased towards the non-actuated position.

Abstract: The invention relates to an integral brake for a motorbike. The integral brake is designed in such a way that if the footbrake lever or the handbrake lever is additionally activated after the footbrake lever or the handbrake lever is already activated, an optimum distribution—corresponding to the aimed-at increased deceleration of the motorbike—of the braking forces applied to the front and rear wheels is brought about without influencing the pressure prevailing in the handbrake cylinder.

Abstract: A master cylinder assembly for a bicycle disc brake having a housing defining a cylinder, a piston received in the cylinder, a lever pivotably attached to the housing, and an adjustment guide body that is operatively associated with the piston. The piston is moveable within the cylinder between a select starting position and a pressurized position. The lever is operatively associated with the piston to move the piston from the select starting position to the pressurized position as the lever is pivoted between a rest position and a fully-actuated position. The adjustment guide body is pivotable between a first position and a second position for adjusting the select starting position of the piston.

Abstract: A bicycle hydraulic brake device includes a housing having a master cylinder, a master piston movably mounted in the master cylinder, a brake operating member and an adjustment mechanism. The brake operating member is arranged to move between a rest position and a brake actuating position and to move the master piston in response to movement of the brake operating member to the brake actuating position. The adjustment mechanism is arranged to adjust the rest position and a free stroke of the brake operating member with an initial travel position of the master piston remaining unchanged. The adjustment mechanism includes a first adjustment member that adjusts a length of a free stroke and a second adjustment member that adjusts the rest position of brake operating member without changing the length of the free stroke.

Abstract: A brake lever assembly for actuating a hydraulic disc brake system is shown and described. The brake lever assembly provides two-stage braking by operatively connecting a lever to first and second pistons contained in a master cylinder. The first and second pistons are operatively connected to one another such that they move together until the first piston reaches a threshold distance from a top end of the master cylinder, after which the second piston moves with respect to the first piston.

Abstract: A master cylinder assembly for a hydraulic bicycle braking system that includes a master cylinder having a first end and a second end, a first piston having a first end and a second end disposed in and movable within the master cylinder, a second piston disposed in and movable within the master cylinder, and a modulator configured to modulate a first pressure that is applied to the second end of the first piston.

Abstract: A brake lever assembly for actuating a hydraulic system is shown and described. The brake lever assembly comprises a housing, a master cylinder disposed in the housing, and a master piston disposed in the master cylinder. The master piston has an adjustable dead band. A lever is connected to the housing and has an adjustable reach. The lever is pivotable about a first axis to adjust the reach and is pivotable about a second axis to actuate the master piston.

Abstract: Apparatus for controlling brakes in bicycles and the like, to be used, in particular, for disc brakes mounted on bicycles, with a pump (8) connected with a relevant reservoir (88) for the fluid of the hydraulic circuit, and comprising a piston (89) sliding within a relevant chamber (80) provided with one or more ports (83, 84) for connection with said reservoir (88), said piston being so shaped as to close/open said ports (83, 84) upon its displacement along said chamber (80), the apparatus being characterized in that the idle stroke of the piston (89) inside the said chamber (80) is adjustable by a rotation of the same piston (89) about its longitudinal axis.

Abstract: An integral brake system for motorcycles, in which a hydraulic brake system acts on one wheel is connected by a hydraulic line to a main brake cylinder which is controllable with a first brake lever, a brake system acts on the other wheel, with an actuator controllable by both the first brake lever and a second brake lever, and an electronic control unit that contains a regulating device for controlled distribution of the brake force between the two wheels. The electronic control unit is connected by electric control lines to a sensor that responds to operation of the hydraulic brake system, to the actuator and to the second brake lever. The control unit controls the actuator as a function of the output signal of the sensor or, in the event of operation of the second brake lever, to activate the brake system that acts on the second wheel.

Abstract: An integrated disk caliper brake and disk lock for a bicycle or a motorcycle is provided. The caliper brake of the present invention is adapted to work for a wheel rotationally fixed to a motorcycle frame. The caliper has an elongated main body, which extends generally in parallel with suspension members connected through a rocker arm to a wheel axle. The caliper body has a first chamber half, which accommodates a piston-activated brake pad. The chamber communicates with a fluid reservoir through the flexible brake line. A series of catch holes are disposed at an even distance along a circle about the center of the wheel axle. At an area of main body of caliper opposing disk, a latch engages one of the holes. A latch has a locking mechanism, which is integral to caliper brake main body.

Abstract: An integrated motorcycle brake system has a brake line, and an inside brake assembly having an inside piston. The brake line connects to the inside brake assembly, and the inside brake assembly integrally forms a fork leg. The outside brake assembly has an outside piston opposite the inside piston. A fluid passage between the outside brake assembly and inside brake assembly has a conduit that transmits brake line pressure to the inside and outside pistons. The four way fluid junction has a vertical bore meeting a horizontal bore where the vertical bore is plugged at a top end with a seal.

Abstract: A brake lever assembly for actuating a hydraulic disc brake system is shown and described. The brake lever assembly provides two-stage braking by operatively connecting a lever to first and second pistons contained in a master cylinder. The first and second pistons are operatively connected to one another such that they move together until the first piston reaches a threshold distance from a top end of the master cylinder, after which the second piston moves with respect to the first piston.

Abstract: A bicycle hydraulic brake actuation device includes a hydraulic master cylinder housing having a bore, a master piston and a radial seal received in the bore a push rod and a lever. The push rod is configured to move the master piston and the radial seal between a neutral position and a braking position. The lever is pivotally attached to the housing for pivotal movement between an at rest position and a brake actuation position. The lever includes a contact surface configured and arranged to move the push rod as the lever is pivoted between the at rest position and the brake actuation position. Further, the push rod includes at least one roller configured to contact to the contact surface of the lever.

Abstract: A brake system comprises a brake lever that operates an integrated brake assembly that is housed within a portion of the frame of a bicycle. Operation of the brake system can employ a master cylinder that is actuated by the brake lever either directly or by cable. Actuation of the master cylinder causes one or more corresponding slave cylinders to actuate. The slave cylinders are operatively coupled with the master cylinder via a hydraulic line. Actuation of the one or more slave cylinders causes a brake pad that is connected to the slave cylinder to come into contact with the rim of the bicycle.

Abstract: A bicycle brake lever is used on a handlebar of a bicycle and has a body, a hydraulic cylinder, an oil jacket, a cap and a leakage proof element. The body is mounted with the handlebar of the bicycle and has a threaded hole and a lever. The hydraulic cylinder is mounted on the body and has an oil chamber, a piston and an annular groove. The piston is mounted moveably in the oil chamber and is connected with the lever. The annular groove is formed around the external surface of the hydraulic cylinder and has two transmitting holes. The oil jacket is mounted around the hydraulic cylinder over the annular groove, is made of translucent material and has a tube. The cap is mounted over the opening of the tube. The leakage proof element is mounted between the opening of the tube and the cap.

Abstract: The invention refers to an apparatus for the control of brakes in bicycles and the like, to be used, in particular, for disc brakes mounted on bicycles and comprising a pump able to push fluid into a hydraulic circuit connected to the brake, characterized in that the pump is held inside the handlebar or a part associated therewith.

Abstract: Apparatus for controlling brakes in bicycles and the like, made with a pump connected to a relevant reservoir, characterized in that the reservoir is disposed inside a containment body and exhibits a concave portion shaped complementarily to a handlebar's portion to which the body is to be fixed.

Abstract: A master cylinder for a bicycle hydraulic disc brake includes a cylinder wall defining a cylinder interior and a cylinder exterior. A piston is received within the cylinder interior. A reservoir for hydraulic fluid is defined in part by a portion of the cylinder exterior, the portion of the cylinder exterior protruding into the reservoir. A port through the portion of the cylinder exterior which protrudes into the reservoir provides fluid communication between the reservoir and the cylinder interior. The port is located on the portion of the cylinder exterior which protrudes into the reservoir at a position which prevents air bubbles within the reservoir from entering the port.

Abstract: Apparatus for controlling brakes in bicycles and the like, to be used, in particular, for disc brakes mounted on bicycles, with a pump (8) connected with a relevant reservoir (88) for the fluid of the hydraulic circuit, and comprising a piston (89) sliding within a relevant chamber (80) provided with one or more ports (83, 84) for connection with said reservoir (88), said piston being so shaped as to close/open said ports (83, 84) upon its displacement along said chamber (80), the apparatus being characterized in that the idle stroke of the piston (89) inside the said chamber (80) is adjustable by a rotation of the same piston (89) about its longitudinal axis.

Abstract: A master cylinder which has an unusual ability to limit space requirements, to be fitted in vehicles controllable by handlebars, comprises a cylinder body provided with a seat for housing a portion of the handlebar. A chamber for slidably housing a piston extends along an axis inside the cylinder body. A manual control lever which acts on the piston is mounted on the cylinder body for pivoting about its fulcrum in a plane. The axis along which the chamber for slidably housing the piston extends intersects the plane of pivoting of the control lever at a point.

Abstract: A motorcycle including a front wheel, a rear wheel, a frame, a seat and handlebars is disclosed. The motorcycle includes a linkage connecting a brake pedal with a caliper. The caliper is located within a body perimeter of the motorcycle. The caliper is adapted to engage a disk and the caliper can have a line of action. The direction of the line of action of the caliper can be different than the axis of rotation of the rear wheel. The linkage can also convert vertical motion into horizontal motion.

Abstract: An improved, lightweight suspension fork for a bicycle with variable travel capability that maintains excellent torsional rigidity. This suspension fork allows for adjustable suspension travel adjusted at the handlebars of the bicycle. The suspension system includes a travel adjustment knob located at the handlebars of the bicycle. The travel adjustment knob is keyed with the main shaft of the suspension system so as to allow turning of the main shaft. Located on the main shaft within the suspension system housing is a length adjuster mechanism. The length adjuster moves linearly with respect to the housing as the main shaft is turned pulling the inner tube member of the suspension housing up or down relative to the outer tube section of the suspension housing, thereby changing the stroke of the suspension system.

Abstract: The present invention relates to a spot-type disc brake with a brake housing straddling a brake disc, with at least one brake pad that is arranged in the brake housing so as to be slidable in the actuating direction and cooperates tribologically with the brake disc upon brake application, with at least one actuating device arranged in the brake housing to apply an actuating force to the brake pad, and with a spring assembly for the active adjustment of a clearance between the brake pad and the brake disc after brake application. To simplify the configuration of the spring assembly, the spring assembly comprises exactly one spring which is secured detachably in the spot-type disc brake and is supported on the brake pad and on the brake housing. A spring of this type is arranged advantageously symmetrically within the brake housing to prevent an undesirable inclined positioning of the brake pads.

Abstract: A hydraulic brake lever for a bicycle, comprising a main body, a pull handle, and an adjusting mechanism. Thus, the hydraulic brake lever can be operated conveniently and smoothly, thereby facilitating the rider operating the hydraulic brake lever. In addition, the hydraulic brake lever is sensitive, thereby protecting the rider's safety. Further, the operation stroke of the brake can be changed and adjusted conveniently, so as to adjust the sensitivity of the brake to the optimum state.

Abstract: A brake/clutch master cylinder for a motorcycle/bicycle or the like, with a body which is produced by moulding of plastics material reinforced by glass fibre without the need for machining operations or metal inserts and which forms, together with the cylindrical shell of the master cylinder, a hydraulic-fluid reservoir, a coupling sleeve for a male quick-fit hydraulic connector, and a seat for fixing to a handlebar, the body having a high degree of structural stiffness with respect to working stresses and adequate resilience for impact stresses imparted to the body by means of the hand operating lever.

Abstract: A hydraulic brake device for a bicycle includes a hydraulic brake having a first recess and a second recess, and a conduit wire connected to the triple body of the hydraulic brake. The triple body has an inside provided with an inlet tube connected to the conduit wire, a first tube connected to the inlet tube and the first channel of the first recess, and a second tube connected to the inlet tube and the second channel of the second recess. Thus, the hydraulic brake device can provide a braking effect gradually, without incurring a self-locking action, thereby protecting the rider's safety.

Abstract: A brake assembly for a motorcycle having a reduced number of components and assembly steps, and a simple control system with no interference between separate hydraulic systems. A brake assembly for a motorcycle provided with a front brake and a rear brake respectively for a front wheel and a rear wheel includes a first brake actuator and second brake actuator.

Abstract: A master cylinder for a hydraulic disc brake includes a housing defining a cylinder, the cylinder having a first and second end along its axis. A piston is received in the cylinder and has a radial seal between the piston and the cylinder. A lever is pivotably associated with the housing for pivoting between a rest position and an actuated position relative to the housing. A push rod is operatively associated with the piston and the lever to move the piston axially within the cylinder as the lever is actuated between the rest and actuated positions. A threaded engagement between a first end of the push rod and the lever is configured to cause movement of the rest position of the lever relative to the housing when a rotating force is applied to the push rod causing axial rotation of the push rod. An indexing structure is operatively associated with the push rod for providing index axial rotation of the push rod upon application of the rotating force to the push rod causing axial rotation of the push rod.

Abstract: A brake control device is provided for connecting to a hydraulic fluid conduit, wherein the hydraulic fluid conduit has a first end for connecting to the brake control device and a second end for connecting to a braking apparatus. The brake control device comprises a bracket that can be mounted to a handlebar of the bicycle, a brake operating member that is movably coupled to the bracket, and a hydraulic fluid transmission unit disposed on the bracket. The hydraulic fluid transmission unit is structured to communicate a hydraulic fluid to the hydraulic fluid conduit in response to movement of the brake operating member. A joint securing area is disposed on the hydraulic fluid transmission unit, wherein the joint securing area is structured to couple to the first end of the hydraulic fluid conduit. A rotation restrictor is disposed at the joint securing area, wherein the rotation restrictor is structured to restrict rotation of the first end of the hydraulic fluid conduit relative to the joint securing area.

Abstract: A hydraulic balanced braking system, comprising two oil pressure cylinders, two hydraulic brakes, and an oil-pressure balance unit. The two oil pressure cylinders are mounted close to braking handles. The oil-pressure balance unit is inserted between the two oil pressure cylinders and the two hydraulic brakes and further comprises two parallelly oriented oil cylinders, two primary pistons, two secondary pistons, and a connecting plate. Two inlets at upper sides of the two oil cylinders are connected with the two oil pressure cylinders, respectively, transmitting oil pressure from the two oil pressure cylinders to the two primary pistons. The two secondary pistons are mounted below and driven downward by the two primary pistons, respectively, thus generating oil pressure and via two outlets driving a braking movement of the two hydraulic brakes.

Abstract: A master cylinder device for a brake comprise a master cylinder body having a cylinder bore, a reserve tank provided integrally with the master cylinder body so as to have a fluid reserving portion for feeding hydraulic fluid for the brake, a fluid passing port provided in the fluid reserving portion of the reserve tank, the fluid passing port having an opening area smaller than an opening cross-sectional area of the fluid reserving portion, and a communicating passage connecting the fluid passing port to the cylinder bore, wherein the reserve tank is provided on an upper end of the master cylinder device such that a longitudinal direction of the reserve tank is substantially orthogonal to a longitudinal axis of the master cylinder body.

Abstract: A device (10) for length adjustment, with a barlike component (12) that has an external profiling (14), is; the component (12) is received in a receptacle (16) of a base body (18), and the base body (18) has a binding (20) with at least one profiled segment (22, 24), which under the influence of a hollow element (28), guided axially displaceably on the base body (18) and acted upon by the prestressing of a spring (26), in a first axial position (30) of the hollow element (28), is shifted into a locking position, in which the base body (18) and component (12) are axially rigidly coupled, and in a second axial position (32) of the hollow element (28), the profiled segment (22, 24) is shifted into an unlocking position, in which the base body (18) and component (12) are axially displaceable relative to one another.

Abstract: A hydraulic brake system for a bicycle having a frame, a handlebar, and front and rear wheels, includes a master hydraulic cylinder mountable on the handlebar and a handle mechanism operatively connected to the master hydraulic cylinder in order to actuate same. A first hydraulic cylinder actuator is mountable on the frame adjacent the rear wheel and is operatively connected to the master hydraulic cylinder. A rear wheel brake pad is connected to the hydraulic cylinder actuator and is operable thereby. There is a second hydraulic cylinder actuator mountable on the frame adjacent the rear wheel and connected to the rear wheel brake pad. A third hydraulic cylinder actuator is mountable on the frame adjacent the front wheel and is operatively connected to the second hydraulic cylinder actuator so as to be operable by the latter and a front wheel braking device is connected to the third actuator. This braking device brakes the front wheel when the rear wheel braking device is in its braking position.

Abstract: A bicycle hydraulic disc brake master cylinder includes a housing having a bar clamp at one end configured for fastening the housing to a bicycle handle bar, the bar clamp receiving the handle bar along a clamp axis. A handle is pivotably connected to the housing to pivot about a pivot axis in operative association with a piston train to impart a drive force on the piston train. The handle defines a finger receptacle receiving at least one finger of a user defining an effective force point at a select distance from a distal end of the handle. A select ideal finger actuation path for the at least one finger of a user begins at a start point at the effective finger force point with the handle at an engagement point where the handle begins to drive the piston train against operative fluid resistance and extends along a line from the start point at a select angle relative to the clamp axis.

Abstract: An integrated handlebar extension and master cylinder apparatus for use on the handlebar of an associated motorcycle is provided. The integrated handlebar extension and master cylinder apparatus includes a main body member with a connection interface for selectively connecting the apparatus onto the handlebars of an associated motorcycle. A master cylinder unit is formed integrally with the main body member and has an elongate bore defining a first longitudinal axis. A piston is disposed within the bore and is slidable relative to the master cylinder unit along the first longitudinal axis. A trigger member is pivotably movable relative to the master cylinder unit and is adapted on a first end to receive an actuation force and on a second end to cause relative movement between the master cylinder unit and the piston in response to the actuation force. A handlebar portion extends along said first longitudinal axis on a side of said main body member opposite from said connection interface.

Abstract: A hydraulic brake system for a bicycle having a frame, a handlebar, and front and rear wheels, includes a master hydraulic cylinder mountable on the handlebar and a handle mechanism operatively connected to the master hydraulic cylinder in order to actuate same. A first hydraulic cylinder actuator is mountable on the frame adjacent the rear wheel and is operatively connected to the master hydraulic cylinder. A rear wheel brake pad is connected to the hydraulic cylinder actuator and is operable thereby. There is a second hydraulic cylinder actuator mountable on the frame adjacent the rear wheel and connected to the rear wheel brake pad. A third hydraulic cylinder actuator is mountable on the frame adjacent the front wheel and is operatively connected to the second hydraulic cylinder actuator so as to be operable by the latter and a front wheel braking device is connected to the third actuator. This braking device brakes the front wheel when the rear wheel braking device is in its braking position.

Abstract: A bicycle disk brake assembly includes a pressure-reducing cylinder attached to a caliper body and formed with an inner chamber and outer chamber. Upon application of an external pressure to a hydraulic fluid, which is filled within a fluid reservoir in the caliper body, the fluid flows from the reservoir to the outer chamber. When the fluid pressure in the outer chamber reaches a first value, an inner check valve is operated so as to permit flow of the fluid from the outer chamber to the inner chamber. Thereafter, when the fluid pressure in the inner chamber reaches a second value and when the external pressure is released, a resilient member biases the fluid in the inner chamber to activate an outer check valve, thereby permitting flow of the fluid from the inner chamber to the outer chamber and subsequently to the reservoir.

Abstract: A bicycle brake assembly includes a caliper body and an anti-dead lock device. The caliper body has a vertical passage to permit extension of a brake disk of a wheel, a fluid reservoir replete with a hydraulic fluid, and two brake-pad mounting pieces. Two brake pads are mounted respectively on the brake-pad mounting pieces of the caliper body, and are operably associated with the fluid reservoir in such a manner that when a pressure is applied on the fluid reservoir, the brake pads clamp the brake disk. The anti-lock device includes a cylinder defining a chamber, and a piston member disposed sealingly and movably in the chamber to divide the same into first and second partitions. The first partition is replete with the hydraulic fluid, and is in fluid communication with the fluid reservoir. An urging member is disposed in the second partition and abuts against the piston member.

Abstract: The invention relates to a brake cylinder (100) and a hydraulic rim brake comprising a unit for receiving a brake pad (103). With known brake cylinders, it is difficult to remove the running wheel if the tire mounted on the wheel rim (6) is substantially wider than the wheel rim (6), since the wheel has to be moved through the gap between the two brake pads arranged on the brake cylinder. The brake cylinder according to the invention should have a simple structure and permit easy removal of the running wheel. The brake cylinder (100) according to the invention has a connecting member (302) for the arrangement of the brake cylinder (100) on a frame part (2″) in a manner rotatable about an axis, the axis being essentially orthogonal to the receiving unit for the brake pad (103).

Abstract: For the connection of the Bowden cable coming from the pedal with the Bowden cables leading to the wheel brakes, the foot parking brake for vehicles has a connection element by means of which the cables are connected with one another. As a compact constructional unit, the connection element is provided with a sleeve part in which a pivot pin can be inserted by means of which swivel levers are connected for the connection of the cable and Bowden controls, and can be fixed as a constructional unit on a vehicle body part, for example, a transmission tunnel.

Abstract: A bicycle disc brake is provided in which a support member movably couples the brake caliper to the frame of the bicycle. The bicycle disc brake caliper has a caliper housing with a single piston unit. The piston unit is movably coupled to the housing between a release position, in which the piston unit is spaced from a disc brake mounted to a wheel of a bicycle, and a braking position, in which the piston unit engages the disc brake of the bicycle wheel. The piston unit has a first friction member movably coupled between a release position and a braking position and a second friction member arranged substantially parallel to the first friction member to form a disc brake receiving space between the first and second friction members. In one embodiment, the caliper housing is movably coupled to the support member by a pivot pin. In another embodiment, the caliper housing is movably coupled to the support member by a linkage assembly.