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| Number | Title | Issue Date |
| 6832479 | Resin piston for master cylinder in brake system, master cylinder, die for molding resin piston for master cylinder, and manufacturing method of resin piston for master cylinder An upper die and a lower die are combined. A core for molding a concavity and another core are combined with the combined upper die and the lower die at respective prescribed positions. A core for through-hole molding is constructed by the junction of cores that are... | 12/21/2004 |
| 6793295 | Brake control method and brake control apparatus for motorcycle In a brake control method for a motorcycle which includes a front master cylinder, front wheel cylinders hydraulically connected to the front master cylinder, a rear master cylinder, a rear wheel cylinder hydraulically connected to the rear master cylinder and a hyd... | 09/21/2004 |
| 6711982 | Brake booster An improvement of a valve plunger 14 used in a brake booster 1. A valve plunger 14 is made up of a rearwardly disposed body 34, and an engaging member 35 mounted on a front portion of the body 34. When a brake pedal is quick... | 03/30/2004 |
| 6672197 | Automatic brake booster An automatic brake booster includes a solenoid and a solenoid plunger which allow a flow path in a valve mechanism to be switched without depression of a brake pedal. The solenoid plunger comprises a rear member on which an atmosphere valve seat is formed... | 01/06/2004 |
| 6666105 | Brake pedal apparatus In a brake pedal apparatus, as a brake pedal is depressed when an engaging device and a receiving portion are engaged with each other, a second lever member pivots about a second pivot pin. At this point, when the pedaling force is smaller than a threshol... | 12/23/2003 |
| 6655140 | Fluid pressure boosting device In a fluid pressure boosting device 1 of the present invention, a control valve 4 is composed of a supply valve 44 and a discharge valve 45, the supply valve 44 comprises an annular valve cone 46 of a poppet type and a first valve seat 7 and the discharge... | 12/02/2003 |
| 6651429 | Master cylinder A master cylinder including a cylinder body having a cylindrical bore and an opening in the circumferential wall for a relief port communicating with the interior of hydraulic reservoir. A piston is slidably inserted into the cylindrical bore to form a hy... | 11/25/2003 |
| 6637201 | Master cylinder A throttle valve mechanism having a throttle function of throttling the flow of working fluid from a pressure delivering chamber to a reservoir at the operation time of the piston of a master cylinder, a valve function of allowing the working fluid to flo... | 10/28/2003 |
| 6634724 | Electrically driven brake booster An electrically driven brake booster (1) includes an input member (4) disposed in operative association with a brake pedal (12), an output member (5) disposed in operative association with the master cylinder (6), and drive transmitting device (10) for tr... | 10/21/2003 |
| 6634275 | Automatic brake booster An automatic brake booster 1 includes a solenoid 8 which causes a back- and forth movement of a solenoid plunger 31 to switch a valve mechanism 6. A second vacuum valve seat member 11 including a second vacuum valve seat 12 which is juxtaposed with a firs... | 10/21/2003 |
| 6601927 | Method for detecting lifting of rear wheel and method for controlling braking, of two wheeled vehicle To provide a technique capable of detecting lifting of a rear wheel of a two-wheeled vehicle correctly and rapidly. An estimated vehicle speed is generated by selecting the larger one of wheel speed Vf, Vr of a rear wheel and a front wheel, and attention ... | 08/05/2003 |
| 6568768 | Brake system A brake system 1 of the present invention comprises a brake operating means 2 such as a brake pedal for carrying braking operation, a fluid variable stroke means 3 which variably controls the stroke of the brake operating means 2 by using fluid, and a bra... | 05/27/2003 |
| 6564692 | Brake booster A first vacuum valve seat 17 is formed on a valve body 3, and a second vacuum valve seat 18 is formed on a tubular member 21 which is slidably mounted on the valve body 3. A lever member 41 is provided between the tubular member 21 and a valve plunger 14,... | 05/20/2003 |
| 6564553 | Braking pressure intensifying master cylinder In a braking pressure intensifying master cylinder, as an input shaft (53) travels forwards in a braking maneuver, a control valve (54) is actuated to develop fluid pressure according to the input in a reaction chamber (38) and a pressurized chamber (35).... | 05/20/2003 |
| 6550591 | Reservoir apparatus and auxiliary reservoir To provides a technique capable of replenishing a working fluid smoothly while employing a method for replacing an atmospheric air with the working fluid. The reservoir apparatus (10) includes a main reservoir (20) having an inlet opening for feeding a hy... | 04/22/2003 |
| 6543859 | Electric control apparatus for brake An electric control apparatus of a brake is provided with a second reservoir, in which a brake fluid is stored in advance, separately from a control device of a brake hydraulic pressure. The second reservoir communicates with a pump, which is an original ... | 04/08/2003 |
| 6524076 | Variable displacement pump including a control valve A pump including a pump chamber 18, formed in a pump body 11, between a cam ring 17 and a rotor 15. The cam ring is formed so as to move in a direction whereby the pump capacity of the pump chamber increases and decreases. First and second fluid pressure ... | 02/25/2003 |
| 6516704 | Brake booster A tubular member 21 is disposed within a valve body 6, and has a resilient retainer 69 mounted around the outer periphery thereof. The inner periphery of the valve body 6 is formed with an annular groove 68. When a brake pedal is quickly depressed, an inp... | 02/11/2003 |
| 6491356 | Brake system The invention relates to a brake system including a brake booster. A pneumatic pressure operated brake booster VBB or a liquid pressure operated brake booster includes a valve mechanism which is urged by a force of depression applied to a brake pedal BP t... | 12/10/2002 |
| 6467267 | Fluid pressure boosting device and brake system employing the same In a brake fluid pressure boosting device 1 of the present invention, by operation, an input shaft 4 is moves forward to rotate a lever 27 to actuate a control valve 8 so that the control valve 8 produce working fluid pressure corresponding to the input. ... | 10/22/2002 |
| 6467266 | Brake booster In a brake booster of the present invention, by depression of a brake pedal 3, an input shaft 4 travels to the left, a pedal input converter generates thrust, and a valve element 5a moves to the left. A valve passage 5a1 is shut off from a valv... | 10/22/2002 |
| 6463737 | Master cylinder As the primary piston 3 is driven forward, a cup seal 32 moves forwardly of a communication path 17c in a first sleeve 17 to interrupt a communication between a first reservoir chamber 11 and the first liquid pressure chamber 5, thus generating a liquid p... | 10/15/2002 |
| 6438955 | Master cylinder The object of the present invention is to exhibit the function of a throttle valve mechanism without making the whole of a master cylinder large-sized and to simplify the structure and to reduce the number of pieces of parts. In order to attain this objec... | 08/27/2002 |
| 6415885 | Steering damper A steering damper has a flow passage control valve for switching and connecting among a pump, a tank and left and right chambers in a power cylinder in correspondence to a steering operation, and left and right cylinder passages (3, 4) for connecting to t... | 07/09/2002 |
| 6415605 | Brake system A brake system including an intensifying arrangement which allows a master cylinder pressure to be intensified by feeding a discharge pressure from a pump to an intensifying chamber. The brake system includes a master cylinder having a primary piston, on ... | 07/09/2002 |
| 6367254 | Master cylinder A master cylinder which includes a primary piston and a thrust piston disposed within a housing, and defines an intensifying chamber at a location rearward of the thrust piston. An input shaft has a front end which is disposed within the intensifying cham... | 04/09/2002 |
| 6361127 | Automatic operation detector for automatic brake unit A detection switch is mounted on an input shaft through a clevis for detecting the operation of an automatic brake unit without the depression of a brake pedal. The detection switch may also be mounted on the brake pedal. The clevis and the brake pedal ar... | 03/26/2002 |
| 6352415 | variable capacity hydraulic pump First and second fluid pressure chambers 43 and 44 are formed on both sides of a swingable cam ring 27. A control valve 40 for controlling a swing of the cam ring is provided. To operate the control valve, a variable metering throttle 61 is provided in th... | 03/05/2002 |
| 6352316 | Brake system A brake system including a negative pressure booster, a master cylinder of tandem type and an intensifying arrangement. The intensifying arrangement defines an intensifying chamber disposed rearward of a primary piston, a pump for supplying a braking liqu... | 03/05/2002 |
| 6352015 | Booster An improvement of a reaction disc 25 and a valve plunger 8 disposed in a booster is provided. A recess 25a is formed in a rear end face 25b of the reaction disc while a projection 31a from the valve plunger 8 is loosely fitted into the recess 25a. When th... | 03/05/2002 |
| 6347570 | Automatic brake booster A valve mechanism of an automatic brake booster comprises a vacuum valve seat formed on a valve body to face forward, an atmosphere valve seat formed on the rear portion of a valve plunger, and a valve element adapted to be seated on the both valve seats ... | 02/19/2002 |
| 6324958 | Automatic brake booster A valve mechanism comprises a first valve seat formed on a valve body and facing rearward, a second valve seat formed on a sleeve which is urged rearward of a spring and facing rearward, and a valve element urged by a popped return spring to be seated upo... | 12/04/2001 |
| 6318082 | Master cylinder An object of the present invention is to reduce the work cost of a piston, and to decrease the resistance of flow in a communicating passage between a pressure chamber and a reservoir, and to reduce the ineffective stroke, too, and the means is as flows: ... | 11/20/2001 |
| 6315371 | Brake system In a brake system, a controller closes solenoid shut-off valves to shut off a communication between a master cylinder and wheel cylinders by pressing a brake pedal, and at the same time, drives a pump and controls the operation of brake fluid pressure con... | 11/13/2001 |
| 6295915 | Brake booster According to the invention, a servo ratio regulating member is disposed on the front end face of the valve body for abutment against the rear end face of a reaction disc. The servo ratio regulating member comprises an engaging portion which is engaged wit... | 10/02/2001 |
| 6282896 | Idle stroke shortening device in brake system A brake system 1 of the invention comprises a brake pedal 2, a booster 3 which boosts the input force applied by the brake pedal 2 and outputs the boosted force, a travel amplifying mechanism 4 which amplifies the travel of an output shaft of the booster ... | 09/04/2001 |
| 6250200 | Brake booster A brake booster 1 of tandem type includes a solenoid 16 within a valve body 6. The solenoid 16 is provided with a forwardly disposed holder 42 and a rearwardly disposed yoke 43, with a spool 44 held sandwiched therebetween and with a piston 56 disposed to... | 06/26/2001 |
| 6196641 | Fluid pressure boosting device and brake pressure boosting system employing the device A fluid pressure boosting device of the present invention performs jumping action at a higher servo ratio until fluid pressure in a power chamber (25) reaches a first predetermined value and a rear end (20e) of a reaction piston (20)comes in contact with ... | 03/06/2001 |
| 6183049 | Brake boosting system In a brake boosting system the present invention, as it is decided that brake assist is necessary, a pump 53 is driven, and a solenoid valve 72 is switched to its communication position, and a solenoid shut-off valve 75 is opened. Then, the pump 53 sucks ... | 02/06/2001 |
| 6053089 | Hydraulic booster device In this invention, an idea is adopted in which the pressure at a forward portion and a backward portion of valve device is steppingly dropped twice. The valve device of the present invention includes, on the axis of a spool 600, a first valve 710 located ... | 04/25/2000 |
