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| Number | Title | Issue Date |
| 8226176 | Brake system A brake system includes a master cylinder which generates brake fluid pressure by a braking operation of a driver, an electric motor-driven slave cylinder which generates brake fluid pressure based on an electric signal responsive to a braking operation of a driver,... | 07/24/2012 |
| 7393065 | Redundant braking system Disclosed is a redundant braking system for a vehicle. A controller may monitor a status of a hydraulic braking system, and during vehicle travel, automatically switch to a modulated electric braking system which is separate from the hydraulic braking system when th... | 07/01/2008 |
| 7374253 | Method for monitoring the air bleeding quality of an electrohydraulic braking system The invention discloses a method for determining the air content of the brake fluid in a hydraulic braking system. This method also permits determining the quality of the bleeding of the braking system. The principle of the method is a comparison of the volum... | 05/20/2008 |
| 7309112 | Braking system having valve device for delivering pressurized fluid to brake cylinder selectively from at least two pressurizing chambers or only one of them Braking system including a master cylinder having at least two pressurizing pistons partially defining at least two mutually isolated pressurizing chambers, and wherein a working fluid in each pressurizing chamber is pressurized by an advancing movement of the corre... | 12/18/2007 |
| 6945610 | Hydraulic braking system wherein electrically controllable assisting drive force is applied to master cylinder piston upon brake pedal operation A hydraulically operated braking system including a master cylinder (12; 300: 500; 600) having a pressurizing piston (34; 322, 324; 504, 506) operatively connected to a brake operating member (10), to pressurize a fluid in a pressurizing chamber... | 09/20/2005 |
| 6902241 | Vehicle brake control apparatus for controlling normal wheel brakes upon detection of defective wheel brake or brakes A brake control apparatus for controlling at least three brake devices provided for braking respective at least three wheels of an automotive vehicle which includes two wheels located on respective left and right sides of the vehicle, wherein an emergency brake cont... | 06/07/2005 |
| 6805415 | Brake device When the increasing gradient of the operating power is larger than a predetermined gradient, if a master pressure PM2 corresponding to a second predetermined operating power F2 is larger than a second predetermined fluid pressure Pth2, a servo f... | 10/19/2004 |
| 6705683 | Method for monitoring the emergency braking capability of an electrohydraulic braking system To monitor the emergency braking capability of an electro-hydraulic braking system (EHBwherein, during normal operation, the brake pressure in the wheel brakes is generated by means of a pressure source comprised of a hydraulic pump, an umulator, and hydraulic valve... | 03/16/2004 |
| 6494545 | Apparatus for diagnosing accumulator based on fluid pressure in its fluid-tightly sealed state A diagnosing apparatus for diagnosing an accumulator operable to store under pressure a pressurized fluid delivered from a high-pressure source and to supply the pressurized fluid to a fluid-operated actuator for operating the fluid-operated actuator, the... | 12/17/2002 |
| 6425644 | Braking pressure control apparatus having device for diagnosing manually operated hydraulic system A braking pressure control apparatus for a hydraulically operated brake, including a first hydraulic system having a first hydraulic pressure source power-operated to pressurize a working fluid and capable of controlling the fluid pressure, for operating ... | 07/30/2002 |
| 6354672 | Braking system wherein brake cylinder is communicated with pedal-operated pressure source upon failure of pump-operated pressure source A braking system including a brake cylinder, a first hydraulic pressure source having a first pump device for pressurizing a working fluid, a second hydraulic pressure source operable in response to an operation of a brake operating member, to pressurize ... | 03/12/2002 |
| 6244672 | Method and apparatus for controlling a brake system A method and an apparatus for controlling a brake system, the brake pressure of at least one wheel brake being controlled electrically as a function of at least the braking request of the driver. The brake system includes a high-pressure reservoir, whose ... | 06/12/2001 |
| 6155653 | Method and apparatus for pump activation during ABS/TCS control A method and apparatus for controlling activation of a brake pump during controlled braking conditions include a controller for determining pump activation conditions based on four empirically obtained tables stored in the controller: a pressure series ta... | 12/05/2000 |
| 6109879 | Fluid pressure source apparatus A fluid pressure source apparatus includes a pump, an accumulator for receiving pressure from the pump, a pressure switch for detecting the pressure in the accumulator, an electric motor for driving the pump, and a motor control device for driving the mot... | 08/29/2000 |
| 6082830 | Brake system having variable pump pressure control and method of pressure control Electronic control of the supply pressure of the pump is suggested with respect to a hydraulic brake system which is used for brake slip control, traction slip control and further driving stability control operations. Means of action include, for example,... | 07/04/2000 |
| 6062657 | Brake failure compensation system and method A system and method for providing braking to a vehicle having at least two brake sets intended to deliver braking forces for a decelerating rate in response to a braking force request wherein each brake set has surplus braking available. In the event one ... | 05/16/2000 |
| 5954406 | Brake control apparatus for a vehicle A booster and a pressure amplifying device are provided as devices performing a brake assist. Further a pressure sensor which detects master-cylinder pressure is provided. While the braking is applied to the vehicle, the malfunction of the booster can be ... | 09/21/1999 |
| 5884986 | Anti-lock brake control system for automotive vehicles An anti-lock brake control system for an automotive vehicle, comprises a wheel-brake cylinder adapted to provide a braking action, a hydraulic pressure actuating unit adapted to be fluidly connected to the wheel-brake cylinder to feed and exhaust brake fl... | 03/23/1999 |
| 5826953 | Hydraulic braking system especially for motor vehicles A braking system is disclosed that has a manually-actuatable master cylinder having two pressure chambers. A first pressure chamber hydraulically controls a flow control valve through which the pressure medium flows during servo-braking in order to adjust... | 10/27/1998 |
| 5743598 | Anti-skid control apparatus A pressure control apparatus is operated to connect a wheel cylinder to a reservoir via a return fluid passage so that brake fluid will be stored in the reservoir to reduce the pressure. In accordance with the operation of a fluid pressure pump, the brake... | 04/28/1998 |
| 5700067 | Hydraulic braking system, especially for motor vehicles A braking system is disclosed that has a manually-actuatable master cylinder having two pressure chambers. A first pressure chamber hydraulically controls a flow control valve through which the pressure medium flows during servo-braking in order to adjust... | 12/23/1997 |
| 5695260 | Control apparatus for detecting malfunctioning of pressure sensors in an automotive fluid pressure circuit A control apparatus is provided for a fluid pressure circuit in a motor vehicle. The control apparatus may include a first fluid pressure detector that detects a fluid pressure in an accumulator, and that switches between two states when the detected flui... | 12/09/1997 |
| 5683149 | Hydraulic pressure control apparatus having device for estimating amount of fluid in reservoir to which the fluid is discharged to reduce cylinder pressure A vehicle brake cylinder pressure control apparatus wherein an amount of fluid flow into a reservoir is estimated based on vehicle deceleration and a pressure reducing time of the brake cylinder, while an amount of fluid flow from the reservoir is estimat... | 11/04/1997 |
| 5186524 | Hydraulic brake system The proposed brake system eliminates breather bores and central valves in the working pistons of the master brake cylinder and establishes short-term pressure fluid connections between the supply reservoir and the working chambers when the brake is not ap... | 02/16/1993 |
| 5186525 | Hydraulic braking pressure control system for vehicle A hydraulic braking pressure control system includes a shut-off valve (4) which is provided in an oil passage (58) connecting a brake device with an output port in a master cylinder and which is brought into a closed state by a control circuit when a brak... | 02/16/1993 |
| 5106170 | Hydraulic braking pressure control system In a hydraulic braking pressure control system including an auxiliary hydraulic pressure generating unit capable of generating a hydraulic pressure in accordance with the braking operation of a brake pedal, and a hydraulic pressure supply source hydraulic... | 04/21/1992 |
| 5031968 | Electronically controlled brake device An electronically controlled brake device for controlling a brake pressure according to a manual input. While the dynamic pressure line is functioning normally, the dynamic pressure acts on one end of a push rod associated with a brake pedal to give such ... | 07/16/1991 |
| 4964676 | Brake unit A fail safe control for a brake unit with an integral hydraulic brake booster for a road vehicle with a hydraulic dual-circuit braking system having a static front-axle brake circuit and a static rear-axle brake circuit connected respectively to primary a... | 10/23/1990 |
| 4929036 | Hydraulic brake pressure control device for a vehicle A hydraulic brake pressure control device for a vehicle including a casing having first and second cylinder portions in coaxial arrangement and a pillar-like cylinder projecting portion which projects into the first cylinder portion. A piston is disposed ... | 05/29/1990 |
| 4900103 | Brake system with anti-skid control for motor vehicles A brake system having anti-skid control for motor vehicles has a brake booster having a brake valve and an emergency brake piston, and a master brake cylinder, combined in one housing with the brake booster having a master brake piston and two separate br... | 02/13/1990 |
| 4858737 | Hydraulic braking device for automobile vehicle The device comprises a tandem master cylinder, a booster high pressure fluid distributor, 2, a valve mechanism 4 to interconnect the master cylinder and the distributor selectively to a braking circuit. The high pressure circuit is connected to the pipeli... | 08/22/1989 |
| 4812777 | Manually/electrically operated brake system A manually/electrically operated brake system for applying a brake to a wheel of a vehicle, including a master cylinder operated by a brake operating member, to generate a manually controlled braking pressure according to an operation of the brake operati... | 03/14/1989 |
| 4810042 | Brake pressure control apparatus A brake pressure control apparatus comprises a master cylinder (2), an auxiliary hydraulic power source (10), a booster (3), a comparator member (30), an inlet valve (28), a pressure raising member (31) and a limiter member (32). The comparator member (30... | 03/07/1989 |
| 4776646 | Hydraulic vehicle brake system A hydraulic vehicle brake system having a brake booster integrated in a housing and having a master cylinder unit comprising at least two master cylinder pistons with corresponding pressure chambers for at least two separate brake circuits into which an a... | 10/11/1988 |
| 4717210 | Brake-slip-controlled brake system A brake-slip-controlled brake system with a brake-pedal-operated master cylinder (2) assisted by auxiliary energy, with valves (42 through 45 and 66 through 69) in the pressure medium supply lines (40, 41) from the master cylinder (2) to the wheel brakes ... | 01/05/1988 |
| 4708404 | Hydraulic brake system with hydraulic brake force boosting A brake system with hydraulic brake force boosting comprises a master cylinder (1), to which the wheel brakes (36 to 39, 36' to 39') are connected, as well as of an auxiliary-pressure supply system (11, 12) and of an auxiliary-pressure control valve (10) ... | 11/24/1987 |
| 4676558 | Brake system for automotive vehicles A brake system for automotive vehicles comprises a dual-circuit hydraulic braking pressure generator (3) which is substantially composed of a power brake booster (4) and a master cylinder (5). Each one front wheel (VR or VL) is connected to the two brake ... | 06/30/1987 |
| 4655509 | Hydraulic anti-skid apparatus for automotive vehicles A hydraulic anti-skid apparatus which includes a cut-off valve disposed within a braking circuit connecting a master cylinder to a wheel brake cylinder, a bypass valve disposed within a bypass passage of the braking circuit, first and second pistons respe... | 04/07/1987 |
| 4655512 | Brake system having a brake booster A brake system having a master cylinder including main pistons, a brake booster for displacing the main pistons a brake valve for controlling the brake booster and a pressure supply device. The brake booster has a booster cylinder and a booster piston whi... | 04/07/1987 |
| 4641893 | Hydraulic braking pressure control apparatus for vehicles Hydraulic braking pressure control apparatus having a casing provided therein with an input hydraulic chamber for receiving a hydraulic pressure from a master cylinder, an output hydraulic chamber adapted to generate a hydraulic pressure to a wheel brake ... | 02/10/1987 |
