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| Number | Title | Issue Date |
| 6513416 | Brake system A hydraulic-pressure counter-force mechanism 37 which produces a counter force when a brake booster is operated is made up of an input-side member 38 slidable disposed within a valve body 3, a second constant-pressure chamber 39 formed on the rear side of... | 02/04/2003 |
| 6332391 | Automatic brake booster In an automatic brake booster, a sleeve 18 constituting a valve mechanism 15 has a drive portion 50 disposed on the front side, a valve portion 51 forming a second valve seat 19, a mating portion 52 for mating with a valve seat portion when the drive port... | 12/25/2001 |
| 6280150 | Variable displacement pump A cam case 23 is provided which swingably supports a cam ring 34 fitted to a rotor 33 having a vane 33a to form a pump chamber 36 from the outer surface such that the cam ring 34 is swingably supported by a swingable pin 35 disposed in the axial direction... | 08/28/2001 |
| 6273526 | Fluid pressure booster and brake system using the same In a fluid pressure booster, an input rod 7 and a valve member 6 are stroked forward during the operation so as to cause a control valve to be switched over. The atmosphere is introduced into a working pressure chamber 30 via the control valve 41 and a po... | 08/14/2001 |
| 6267566 | Oil pump An oil pump includes pump constituent elements, a pump body, and a driving shaft. The pump constituent elements define a pump chamber between a rotor and a cam ring that houses the rotor. The pump body is constituted by a front body and a rear body. The f... | 07/31/2001 |
| 6244049 | Brake system A counter-force mechanism (37), which produces a counter force when a brake booster is operated, is made up of an input-side member (38) slidably disposed within a valve body (3), a second constant-pressure chamber (39) formed on the rear side of the inpu... | 06/12/2001 |
| 6216580 | Reaction mechanism for booster In accordance with the invention, a booster is not provided with a mechanism which transmits a braking reaction, and accordingly, a reaction cannot be transmitted to a brake pedal. On the other hand, a pseudo-reaction imparting means is provided to impart... | 04/17/2001 |
| 6209441 | Brake booster A brake booster includes reaction transmitting means comprising a first and a second retainer, a coiled spring disposed between the both retainers, and a stop which prevents the both retainers from being spaced from each other beyond a given distance. The... | 04/03/2001 |
| 6205905 | Brake booster Reaction transmitting means of a brake booster includes a parallel combination of a first and a second reaction transmitting path each transmitting a brake reaction from a reaction disc to a valve plunger. The first reaction transmitting path includes a s... | 03/27/2001 |
| 6192783 | Brake booster A brake booster which permits a booster ratio to be changed in two stages. A first spring 25 is disposed between a first plunger plate 24 and the bottom of a stowage 8A of a valve plunger 8. Toward its front end, the outer periphery of the first plunger p... | 02/27/2001 |
| 6164070 | Hydraulic pressure type booster The collar 13 for slidably supporting and guiding a valve body of the control valve 55 of the hydraulic pressure type booster 1 is press-fitted into the small diameter portion 9a of the stepped hole 9 of the power piston 8. The valve seat member 10 of the... | 12/26/2000 |
| 6164184 | Reaction mechanism for booster In accordance with the invention, a booster is not provided with a mechanism which transmits a braking reaction, and accordingly, a reaction cannot be transmitted to a brake pedal. On the other hand, a pseudo-reaction imparting means is provided to impart... | 12/26/2000 |
| 6161380 | Hydraulic pressure boosting apparatus A booster 3 has a structure that a return valve 14 is formed into a two-step throttle incorporating a first throttle valve 36 and a second throttle valve 37 formed continuously from the first throttle valve 36. When a valve spool 28 has been moved forward... | 12/19/2000 |
| 6161464 | Brake booster A brake reaction which occurs as a brake booster is actuated is prevented from being transmitted to a brake pedal, and instead pseudoction reaction imparting means 41 is provided to transmit a pseudo-reaction to the brake pedal. A valve body 5 and a power... | 12/19/2000 |
| 6155156 | Brake booster A brake booster includes a solenoid disposed within a valve body. When the solenoid is energized under the inoperative condition of the brake booster, a piston associated with the solenoid is moved to its operative position to close a vacuum valve while o... | 12/05/2000 |
| 6135577 | Pump operation control apparatus for hydraulic brake boosting system In a pump operation control apparatus for a hydraulic brake boosting system, an ECU 13 is provided with a timer 16 to which an output signal from a brake switch 12 is supplied and a pump-operation-control-signal generating means 17 for transmitting a sign... | 10/24/2000 |
| 6132012 | Abnormal condition detecting apparatus and safety apparatus for hydraulic brake boosting system If a determination is made by a pressure gradient comparison means 24 that gradient of the rise in the pressure in an accumulator calculated by a pressure gradient calculating means 21 and realized during the operation of a pump is lower than a predetermi... | 10/17/2000 |
| 6119577 | Brake booster A tandem brake booster includes a solenoid within a valve body, and the solenoid may be energized to move a first tubular member disposed on the valve body rearward. When an input shaft is driven forward in the inoperative condition of the brake booster, ... | 09/19/2000 |
| 6089140 | Brake booster A brake booster which permits an axial relative movement between a power piston and a valve body is disclosed. An arrangement is made which prevents a brake reaction from being transmitted to a brake pedal. As an alternative therefor, pseudo-reaction impa... | 07/18/2000 |
| 6082241 | Automatic brake booster An automatic brake booster includes a solenoid which drives a plunger, forming part of a valve mechanism, forward to switch a flow path in the valve mechanism, separately from an input shaft. A piston is mounted on the plunger, and the atmospheric pressur... | 07/04/2000 |
| 6079955 | Variable displacement pump A cam case 23 is provided which swingably support a cam ring 34 fitted to a rotor 33 having a vane 33a so as to form a pump chamber 36 from the outer surface such that the cam ring 34 is swingably supported by using a swingable pin 35 disposed in the axia... | 06/27/2000 |
| 6074017 | Liquid pressure control device for load responding brake The present invention discloses a liquid pressure control device (1) for load responding brake. This liquid pressure control device (1) comprises valve mechanisms (5) and (6) for reducing liquid pressure from a brake master cylinder and transmitting reduc... | 06/13/2000 |
| 6042199 | Anti-skid brake control system with vacuum driven pump In case of reducing pressures according to an ABS of the present invention, solenoid valves 14, 15 are turned on and the pressure difference between chambers 24, 23 of a vacuum booster 4 becomes smaller, thereby reducing the brake pressures. Further, sole... | 03/28/2000 |
| 6037568 | Glow plug for diesel engine with ptc control element disposed in small-diameter sheath section and connected to the distal end thereof A glow plug for a diesel engine includes a heat generating coil, a control coil, a sheath, an electrode rod, and a housing. The heat generating coil serves as a heater element. The control coil is connected in series with the heat generating coil and serv... | 03/14/2000 |
| 6027178 | Brake system In a brake system, when a braking force tends to be insufficient, a first switching valve is set at an interrupting position to render a control chamber in a sealed state, and a pump is actuated to render a supplemental pressure-regulating valve in operat... | 02/22/2000 |
| 6025579 | Ceramic heater and method of manufacturing the same A ceramic heater includes a heating element and a sintered body. The heating element is formed of a material containing one of a refractory metal having a melting point of 2,000° C. or more, and a material including an inorganic conductive material. The ... | 02/15/2000 |
| 6008600 | Control method and control apparatus for electric power pump type power steering system A method is provided for controlling an electric power pump type power steering system. In this method, there are provided a brushless motor (1) rotating, when a current is fed to coils, for driving a hydraulic pump of an automotive vehicle, thereby obtai... | 12/28/1999 |
| 6003425 | Booster A plurality of axially extending ribs are formed in the inner periphery of a valve body at its front end for slidably supporting the outer peripheral surface of the output shaft at its rear end. With this arrangement, any dimensional error which may occur... | 12/21/1999 |
| 6003426 | Reaction mechanism for booster In accordance with the invention, a booster is not provided with a mechanism which transmits a braking reaction, and accordingly, a reaction cannot be transmitted to a brake pedal. On the other hand, a pseudo-reaction imparting means is provided to impart... | 12/21/1999 |
| 5984428 | Brake fluid pressure control valve The present invention provides a brake fluid pressure control valve having a plunger 23 slidably fitted in a cylinder hole 22 in a cylinder housing 21 and a retainer 24 which holds the posture of the plunger 23 and seals one end of the cylinder hole 22 by... | 11/16/1999 |
| 5943938 | Brake booster A rubber damper is disposed between a valve plunger, which forms a valve mechanism of a brake booster, and a plate plunger. An air gap is defined around the outer and the inner periphery of the rubber damper to permit an elastic deformation of the rubber ... | 08/31/1999 |
| 5924284 | Hydraulic boosting device In a hydraulic boosting device of the present invention, when the pressure stored in an emergency accumulator is less than a set pressure, a stepped piston 70 moves downward, a throttle valve 72 is set in a first position where the throttle valve 72 is se... | 07/20/1999 |
| 5924285 | Master cylinder tank An object of the present invention is to provide a master cylinder which decreases the number of necessary parts, achieves easy assembly and stabilized quality, and surely prevents a float from coming off. In the present invention, the master cylinder tan... | 07/20/1999 |
| 5907990 | Brake booster having a reaction force mechanism An improvement of a reaction transmitting mechanism for a booster is disclosed. A spring charged to a preset load is disposed between a stepped end face of value body and a plunger plate to urge the latter forwardly. This separates the plunger plate and a... | 06/01/1999 |
| 5895209 | Variable capacity pump having a variable metering orifice for biasing pressure A variable capacity pump includes a rotor, a plurality of vanes, a cam ring, a spring, a variable orifice, first and second fluid pressure chambers, and first and second openings. The spring biases the cam ring to a position where a volume of the pump cha... | 04/20/1999 |
| 5893316 | Brake booster A brake booster includes a reaction transmitting means which includes a spring that is compressed when a brake reaction from a reaction disc exceeds a preset load. A holder is mounted on a valve body, and a brake reaction which is transmitted from the rea... | 04/13/1999 |
| 5890363 | Brake-pressure producing device In a brake-pressure producing device of the present invention, a power piston 10 of a hydraulic booster 2 comprises a stepped piston including a large-diameter portion 10a on which fluid pressure of a power chamber 30 is exerted and a small-diameter porti... | 04/06/1999 |
| 5878573 | Hydraulic brake system In a hydraulic brake system of the present invention, the communication between a power chamber 30 of a hydraulic booster 2 and wheel cylinders (WCY) 58, 59 is allowed by a switching valve 64 when fluid pressure of an accumulator (ACC) 46 exceeds predeter... | 03/09/1999 |
| 5878576 | Master cylinder The present invention discloses a master cylinder MC, which comprises a body section 2, a cap 3, a cylinder housing 1 composed of the body section 2 and the cap 3, a sleeve 8 fitted in the cylinder housing 1, primary and secondary pistons 4 and 5 provided... | 03/09/1999 |
| 5862736 | Connection structure between brake booster and control valve The invention relates to a connection structure between a brake booster and a control valve which selectively introduces a negative pressure or an atmosphere into the booster. A brake booster of tandem type includes a front shell on which a pair of bosses... | 01/26/1999 |
