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| Number | Title | Issue Date |
| 7950320 | Brake booster for motor vehicles Disclosed is a brake booster for motor vehicles, the control valve (12) of which is operable, irrespective of an actuating rod (7) that displaces a valve piston (9), via an electromagnet (20), which actuates a third sealing seat (24 | 05/31/2011 |
| 7357466 | Braking force generator for a hydraulic vehicle brake system In a brake force generator for a vehicle hydraulic brake system having a force input element, which is connectable or connected to a brake pedal and displaceable in a base housing of the brake force generator, a master cylinder, in which a primary piston is displace... | 04/15/2008 |
| 7350622 | Powdered graphite applicator The powdered graphite applicator includes a container with a lid at the upper end and a screen at the lower end. A plate is provided inside the container to define the bottom of the graphite chamber. The plate has an enlarged opening which is normally closed by a ga... | 04/01/2008 |
| 7347510 | Braking force generator for a hydraulic vehicle braking system In a brake force generator (10) for a vehicle hydraulic brake system having a force input element (14), which is connectable or connected to a brake pedal (P) and displaceable in a base housing of the brake force generator (10), a master cylinde... | 03/25/2008 |
| 7267040 | Booster with reduced dead travel and a braking system comprising such a booster A pneumatic brake booster with short actuating travel, comprising a skirt and a pneumatic piston that are rigidly connected and slideably mounted in a sealed casing to delimit a low-pressure chamber and a variable-pressure chamber and a three-way valve arrangement t... | 09/11/2007 |
| 7267412 | Method for determining or calibrating the brake control characteristic of a vacuum brake booster In a method for determining or calibrating the brake control characteristic of a vacuum brake booster of a vehicle brake system, the pressure in the working chamber or the pressure difference between the working chamber and the vacuum chamber of the vacuum brake boo... | 09/11/2007 |
| 7247805 | Switch actuation method and mechanism A mechanism is provided for actuating a switch that transmits motion from a first component, which moves along a first path, to a system that is attached to the mechanism. The mechanism includes a second component that moves transverse to the first path and a third ... | 07/24/2007 |
| 7188517 | System and method for detection of degradation of vacuum brake booster sensor Systems and methods for detecting degradation of a sensor in a vacuum brake booster coupled to a manifold of an internal combustion engine include measuring an engine or vehicle operating parameter to detect operating or control conditions and detecting degradation ... | 03/13/2007 |
| 7137082 | Reduced architecture processing paths A basic Boolean circuit is a transistor circuit commonly used in industry to produce the logic of a particular Boolean gate. A sequence of standard Boolean circuits disposed along the processing path of an integrated circuit define a predetermined truth table repres... | 11/14/2006 |
| 7124998 | Electromagnetically actuated gas valve An electromagnetically actuated gas valve (5) for gas engines (4) includes a valve seat (13) that has at least one flow-through opening (14) and a corresponding sealing plate (15), with the sealing plate being movably arranged and ... | 10/24/2006 |
| 7080588 | Negative pressure type booster A negative pressure type booster includes a power piston, a slide valve, and a holding mechanism, among others, and assists a driver during emergency braking. The holding mechanism is adapted to hold the slide valve at a predetermined frontward position, and include... | 07/25/2006 |
| 7040717 | Negative pressure boosting device In a negative pressure boosting device of the present invention, upon depression of a pedal at a normal speed, an input shaft 11 and a valve plunger 10 move forward to close a vacuum valve 15 and open an atmospheric valve 16 and a power p... | 05/09/2006 |
| 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 |
| 6981438 | Hydraulic brake booster A hydraulic brake booster has an actuator arrangement for a control valve that includes a ball that is located in a first sleeve retained in a stepped bore of a cylindrical member and a pin that is retained in the cylindrical member. The pin has a first end that is ... | 01/03/2006 |
| 6923405 | Enhanced rudder control system A reliably redundant PCU for an aircraft. The PCU includes an override mechanism coupled to the aircraft's control path and a first control member coupled to the override mechanism whereby the override mechanism attempts to transmit a command from the command path t... | 08/02/2005 |
| 6920818 | Dual tandem power piston-attachment concept A vehicle braking system vacuum booster tandem power piston connection design such that the primary piston and the secondary piston are positioned together forming the tandem power piston. A connection design that provides direct alignment between the primary piston... | 07/26/2005 |
| 6748846 | Solenoid valve, vacuum booster diaphragm subassembly, and vacuum booster assembly A solenoid valve includes a valve housing having first, second, and third valve ports, an actuation rod, a first tip valve actuated by the first end of the actuation rod to allow or block fluid passage through the first valve port, and a second tip valve actuated by... | 06/15/2004 |
| 6748847 | Brake booster A brake booster 1 includes a valve mechanism 6, and a solenoid 8 which operates the valve mechanism 6. When the solenoid 8 is energized, a solenoid plunger 26 and a valve seat member 11 move rearward relative to a val... | 06/15/2004 |
| 6705200 | Vacuum brake booster with mechanical emergency braking assistance A vacuum brake booster (1) has a vacuum chamber (4) and a working chamber (3), which are separated from one another in a pressure-proof manner by a movable wall (5). A control valve (6), which has a housing (7) workingly cou... | 03/16/2004 |
| 6681680 | Vacuum brake booster with mechanical emergency braking aid A vacuum brake booster (10) is described, comprising a vacuum chamber (16) and a working chamber (18) separated from each other by a movable wall (14). The vacuum brake booster (10) includes an emergency braking aid comprising a permanent magnet (38), whi... | 01/27/2004 |
| 6672198 | Vacuum brake booster with mechanical emergency braking aid A vacuum brake booster (10) is described, having a vacuum chamber (16) and a working chamber (18) separated from one another by a movable wall (14), and a control valve (20), which comprises a housing (12) coupled workingly to the movable wall (14) and wh... | 01/06/2004 |
| 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 |
| 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 |
| 6609453 | Controller of vacuum brake power booster A controller of a vacuum brake power booster which amplifies an input force of a brake pedal and outputs the amplified force to a brake device, is characterized by comprising a control signal generating means generating a plurality of kinds of signals for... | 08/26/2003 |
| 6568182 | Electronically controllable brake booster Electronically controllable brake booster with a vacuum chamber and a pressure chamber, which are separated from one another by a moveable wall, a control valve arrangement, which can be actuated by means of an electromagnetic actuating device and via whi... | 05/27/2003 |
| 6520063 | Vacuum brake booster with mechanical emergency braking assistance and improved noise damping A vacuum brake booster (10) has a vacuum chamber (18) and a working chamber (20), which are separated in a pressure-proof manner from one another by a movable wall (16). A control valve (22) having a housing (24), which is workingly coupled to the movable... | 02/18/2003 |
| 6516702 | Brake booster A servobrake having a rigid jacket defined by a first shell joined to a second shell by through tie-bars to create variable volume front and rear chambers. The front chamber is permanently connected to a first pressure source whereas the rear chamber is s... | 02/11/2003 |
| 6516701 | Brake power booster and a method for controlling the same The present invention relates to a brake force booster for automotive vehicles which includes a booster housing whose interior space is subdivided by a movable wall into a working chamber and a vacuum chamber, and a control housing which carries the movab... | 02/11/2003 |
| 6505539 | Vacuum brake booster with mechanical emergency braking assistance A vacuum brake booster (10) has a vacuum chamber (18) and a working chamber (20) separated from one another in a pressure-proof manner by a movable wall (16). A control valve (22), which comprises a housing (24) workingly coupled to the movable wall (16),... | 01/14/2003 |
| 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 |
| 6425312 | Brake booster The present invention provides a brake booster that, although simple in construction, capable of adjusting the braking force derived by operation of a solenoid mechanism without worsening the braking response. In the brake booster according to the present... | 07/30/2002 |
| 6422123 | Electronically controllable brake booster In an electronically controllable brake booster a value is sensed which is characteristic for the actual pressure characteristic in the pressure chamber. The actual pressure characteristic is checked for the existence of periodic oscillation components of... | 07/23/2002 |
| 6422122 | Electronically controllable brake booster The invention utilizes the finding that a pressure variation or pressure difference between two chambers of a brake booster is a parameter of considerable influence on the behavior of a brake booster control valve arrangement in the operation of the brake... | 07/23/2002 |
| 6386087 | Control booster The present invention provides a control booster which is capable of appropriately detecting a pedal-operated brake operation during an automatic brake operation. For moving a stop key from a position on a side of a rear-side abutment surface (where a rea... | 05/14/2002 |
| 6374721 | Vacuum booster with retaining mechanism for cylinder cap A brake vacuum booster assembly is provided that includes a power piston with a two-piece member movable relative thereto for opening a valve when a brake pedal is applied. The two-piece member includes a cylinder and a cylinder cap. The cylinder has a pa... | 04/23/2002 |
| 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 |
| 6345565 | Vacuum servo unit for vehicle brake systems A vacuum servo booster 10 for vehicle brake systems includes a housing 14, movable walls 17 and 20, a power piston 22, an input member 28, an input rod connected to a brake pedal 80, a valve mechanism 34, an output rod 49, and an actuator 41. In the vacuu... | 02/12/2002 |
| 6334383 | Vacuum servo apparatus A vacuum servo apparatus capable of regulating the output accompanying the activation of an actuator to the maximum output or less includes a housing, movable walls located within the housing, a power piston, an input member, a valve mechanism, an output ... | 01/01/2002 |