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| Number | Title | Issue Date |
| 7255408 | Vacuum booster A vacuum booster which moderates a retraction speed of a valve seat member to restrain a contact noise between a key member retracting in a unitary manner with the valve seat member and a flange surface of a plunger. The vacuum booster includes a noise restriction d... | 08/14/2007 |
| 7230982 | Decision feedback equalizer for minimum and maximum phase channels This invention describes an apparatus and method to improve the performance of a decision feedback equalizer (DFE) for time-varying multi-path channels. For minimum-phase channels, the equalization is performed in a time-forward manner. For maximum-phase channels, t... | 06/12/2007 |
| 7040718 | Calibration process for a servomotor A calibration process for a pneumatic-assistance servomotor in a braking circuit of a motor vehicle. The values of the output pressure (Pmc) of a hydraulic master cylinder associated with the servomotor and of the negative pressure inside the working chamber of the ... | 05/09/2006 |
| 7014276 | Vacuum booster A vacuum booster which moderates a retraction speed of a valve seat member to restrain a contact noise between a key member retracting in a unitary manner with the valve seat member and a flange surface of a plunger. The vacuum booster includes a noise restriction d... | 03/21/2006 |
| 6874602 | Braking apparatus for a vehicle A braking apparatus used to brake a vehicle having brakes actuated by a power boost in response to the movement of a brake pedal has a vacuum source adapted to be operably connectable to a vacuum conduit network, the vacuum conduit network being adapted to be operab... | 04/05/2005 |
| 6872165 | Parking brake system for a gearbox of a motor vehicle The invention relates to a parking brake system for transmissions of motor vehicle, especially for an automatic transmission and an automated selector transmission, having one parking brake for blocking or releasing the transmission according to actuation signals of... | 03/29/2005 |
| 6739676 | Braking system having vacuum booster whose boosting ratio is lowered at fixed transition point at which wheel cylinder pressure increase is initiated Vehicle braking system including a vacuum booster for transmitting a boosted brake operating force to a master cylinder such that the boosting ratio is reduced at a fixed transition point before the boosting limit point is reached, a brake having a wheel brake cylin... | 05/25/2004 |
| 6612660 | Vacuum booster apparatus and a brake apparatus A vacuum booster apparatus used for a brake apparatus positively decreases a degree of opening of a throttle valve when it is required while an unnecessary decrease in the degree of opening of the throttle valve is positively prevented. A first pressure c... | 09/02/2003 |
| 6554374 | Tandem brake booster for automobiles A motor vehicle tandem brake power booster with two booster units each including a vacuum chamber and a working chamber each arranged in a partition divided housing. The pressure difference between the pressure in the vacuum chamber and the pressure that ... | 04/29/2003 |
| 6513883 | Hydraulic brake for a vehicle A hydraulic pressure brake device for a vehicle includes a first piston outputting brake pressure generated in a first pressure chamber and a second piston having a larger diameter than that of the first piston and provided rearward of the first piston an... | 02/04/2003 |
| 6412883 | Vacuum booster apparatus and a brake apparatus A vacuum booster apparatus used for a brake apparatus positively decreases a degree of opening of a throttle valve when it is required while an unnecessary decrease in the degree of opening of the throttle valve is positively prevented. A first pressure c... | 07/02/2002 |
| 6412881 | Braking system having master cylinder piston receiving booster output and rear chamber fluid pressure from selectively activated pressure increasing device Automotive vehicle braking system including a booster for boosting a brake operating force, a master cylinder including a pressurizing piston which is fluid-tightly and slidably received in a housing and which cooperates with the housing to define a front... | 07/02/2002 |
| 6349995 | Brake control system for a vehicle The present invention is directed to a brake control system for a vehicle, which includes a cut-off valve for opening or closing a main passage, which communicates a master cylinder with a wheel brake cylinder, and a pump for discharging the pressurized b... | 02/26/2002 |
| 6347842 | Braking hydraulic pressure source apparatus wherein assisting pressure is electrically controlled to establish predetermined overall boosting ratio A hydraulic pressure source apparatus for a braking system, including a cylinder housing, a pressurizing piston fluid-tightly and slidably received within the cylinder housing and cooperating with the cylinder housing to define a front pressurizing chambe... | 02/19/2002 |
| 6305757 | Brake booster negative pressure controller In order to provide a brake booster negative pressure controller which reduces deterioration in the fuel consumption due to operation for closing a throttle to assure a brake booster negative pressure while assuring the braking capability required accordi... | 10/23/2001 |
| 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 |
| 6209968 | Braking system for motor vehicles A brake system for motor vehicles with an adjustable pneumatic brake force booster includes a control valve which can be actuated by an electromagnet independently of the driver's actions. A brake pressure controller generates signals which serve to actua... | 04/03/2001 |
| 6203118 | Braking system When a stroke speed exceeds a reference value of a stroke speed threshold value, a solenoid is energized to tract an armature, thereby opening an atmospheric valve independently of the position of a plunger. Consequently, power pistons, together with an o... | 03/20/2001 |
| 6129423 | Brake force control apparatus In a brake force control apparatus selectively performing a brake assist (BA) control for generating a brake force greater than that of a normal control time, an unnecessary restart of the BA control immediately after the BA control is terminated is preve... | 10/10/2000 |
| 6098780 | Tracking, propulsion and braking system for bridge tripper/hopper car A tripper/hopper car rides on a conveyor via four wheel tires running on T-section rails, with respective hold down wheels riding adjacent the underside of the rails and respective caster side wheels riding adjacent the vertical edges of the T-rails. Each... | 08/08/2000 |
| 6062656 | Brake system for motor vehicles In the case of a brake system for motor vehicles, having a brake pedal, a brake booster, a master brake cylinder and an electronically regulatable brake unit, which is arranged between the master brake cylinder and the wheel brakes and by which, via an el... | 05/16/2000 |
| 6039411 | Brake control system for a vehicle The present invention is directed to a brake control system, which includes a first pressure circuit and a second pressure circuit for communicating a master cylinder with two sets of wheel cylinders, respectively. In each pressure circuit, a modulator is... | 03/21/2000 |
| 6027182 | Brake force control apparatus for properly performing both an ABS function and a BA function A brake force control apparatus performs both a brake assist control and an antilock brake control without interference therebetween. A master cylinder generates a brake fluid pressure corresponding to a magnitude of a brake operation. A pump has an inlet... | 02/22/2000 |
| 6006648 | Method of operating a pneumatic brake servo-unit To extend the control range of the pressure control in a brake system which is equipped with a brake power booster that is operable irrespective of the driver's wish, preferably electromagnetically, according to the present invention, the hydraulic pressu... | 12/28/1999 |
| 5979292 | Method of operating a pneumatic brake booster In a method of operating an electromechanically actuatable pneumatic brake booster, an electromagnet which actuates a sealing seat of its control valve is energized in an interval by a short current pulse of maximum current strength with a subsequent ramp... | 11/09/1999 |
| 5979282 | Cutter-infeed apparatus for cutting installations for tapes, in particular magnetic tapes A cutter-infeed apparatus for cutting installations for articles in tape or strip form or film-like articles, circular cutters being fastened on upper and lower shafts and displaced with respect to one another for fixing the cutter infeed, and an electric... | 11/09/1999 |
| 5971500 | Electronically adjustable brake system for motor vehicles The invention relates to an electronically controllable braking system for motor vehicles with a brake pressure generator unit (2) which can be actuated by a brake pedal (1), which supplies hydraulic fluid via a hydraulic fluid path (3) to at least one wh... | 10/26/1999 |
| 5967628 | Vehicular brake system When a vacuum booster fails, an pressure amplifying mechanism increases a wheel brake pressure. After that, even when it is detected that the vehicle is brought into a stopped state, the state in which an increased brake fluid pressure is applied to wheel... | 10/19/1999 |
| 5961189 | Brake system for automotive vehicles with pneumatic brake power booster A brake system for automotive vehicles has a pneumatic brake power booster with two chambers one of the chambers being adapted to be acted upon by a low pressure and the other one by a higher pressure, and at least one of the chambers being adapted to be ... | 10/05/1999 |
| 5951119 | Braking system for motor vehicles A brake system includes a controllable a pneumatic brake booster, whose control valve can be actuated independently of the driver's will by a solenoid. A control structure consisting of a brake pressure controller and a control valve positioning controlle... | 09/14/1999 |
| 5951117 | Boosted braking system with automatically-controlled reaction A boosted braking system for a motor vehicle having a master cylinder (200) and a pneumatic booster (100). The master cylinder (200) causes an increase in pressure of brake fluid supplied to at least one wheel brake (300). The pneumatic booster (100) is c... | 09/14/1999 |
| 5890775 | Vacuum servo unit for a vehicle braking system A vacuum servo unit includes a partition member having an outer periphery that engages the movable wall member in an air tight manner. A receiving chamber is defined between the partition member and the movable wall member, and the receiving chamber is ad... | 04/06/1999 |
| 5855420 | Electronically controlled brake booster and method of operation thereof An electronically controlled brake booster for a vehicle brake system including a housing having a vacuum chamber and a servo chamber separated from the vacuum chamber by a movable wall. The brake booster further includes a control valve operable by an el... | 01/05/1999 |
| 5848827 | Braking assistance pneumatic servomotor with improved valve A pneumatic brake booster for providing braking assistance. The brake booster has a housing (10) with an axis of symmetry (X--X') separated sealingly by at least one movable partition (12) to define at least a first chamber (14) connected permanently to a... | 12/15/1998 |
| 5845558 | Vacuum servo unit for a vehicle braking system A vacuum servo unit has a housing, a movable wall member, a constant pressure chamber, a variable pressure chamber, a movable power piston, an input member, an output member, a control member, an operation member for applying an axial propulsion on the ou... | 12/08/1998 |
| 5823637 | Universal vacuum pump apparatus and method The invented apparatus is designed for use with a tow vehicle and trailer combination. The apparatus includes a controller, and can also include a vacuum sensor and a vacuum pump. The vacuum sensor is communicatively coupled to sense the vacuum supply ava... | 10/20/1998 |
| 5746057 | Electronic control type brake booster for vehicle An electronic control type brake booster having a brake booster; an air path separately formed from a path to which an engine vacuum pressure of said brake booster is applied; a pressure control valve arranged in the air path and driven by a solenoid valv... | 05/05/1998 |
| 5735581 | Valve assembly for controlling a pneumatic brake booster with an electromagnetic actuation means A valve assembly for controlling a pneumatic brake booster (10) comprises a control housing (30) in which a first and a second valve seat (32, 34) are arranged. A valve body (40) is adapted to contact both valve seats. The brake booster (10) is provided w... | 04/07/1998 |
| 5713638 | Brake system with a power brake device A valve seat (50) is provided on and along the end face of the end tubular portion (16a) of the valve body (16) of a power brake device. A valve member (49) is slidably put on the input shaft (8). The valve member (49) is moved forward and backward by an ... | 02/03/1998 |
| 5709437 | Vehicle braking system A vehicle braking system with an electronically controllable brake servo unit which comprises a first pneumatic working chamber (13) and a second pneumatic working chamber (14) which are separated from each other by a movable wall (11), wherein a travel s... | 01/20/1998 |
