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| Number | Title | Issue Date |
| 7487638 | Bicycle hydraulic brake accentuate device A bicycle hydraulic brake actuation device includes a hydraulic master cylinder housing having a bore, a master piston and a radial seal received in the bore a push rod and a lever. The push rod is configured to move the master piston and the radial seal between a n... | 02/10/2009 |
| 7454909 | Impedance shaping element for a control system An impedance shaping element (or more simply, an impedance shaper) physically alters or shapes the mechanical impedance of a drive system as it appears from an interface and facilitates use of feedback control to improve performance by altering or shaping a dynamic ... | 11/25/2008 |
| 7354116 | Vehicle brake hydraulic pressure generator In a brake hydraulic pressure generating device in which the brake operating force is applied to a pressure adjusting valve through a stroke simulator and the hydraulic pressure supplied from the hydraulic pressure source is adjusted to a value corresponding to the ... | 04/08/2008 |
| 7178882 | Servo brake system comprising a decompression piston integrated with the primary piston of the master cylinder A boosted brake for actuating a primary piston (54) of a master cylinder through a feeler and a reaction disk having a decompression piston (62) that is elastically returned by a spring (70). The decompression piston (62) has at least two... | 02/20/2007 |
| 7104058 | Vehicle braking system In a vehicle braking system, a backup piston pushes a master piston directly from behind when hydraulic pressure of a boosted hydraulic pressure chamber decreases. The backup piston has a piston body which is slidably fitted in a casing, and a pusher which is slidab... | 09/12/2006 |
| 7100997 | Servo brake system comprising a decompression piston integrated with the pushrod A boosted brake (10) having a booster (12) for activating a primary piston (54) of a master cylinder (14) by way of a feeler (42), a reaction disk (28) and a push rod (52). The push rod (52) that is housed a de... | 09/05/2006 |
| 7051640 | Pneumatic brake booster with reduced dead travel and braking system comprising such a booster A pneumatic brake booster with reduced dead travel comprising a skirt (10) which can move in a sealed manner in a casing, delimiting a low-pressure chamber and a variable-pressure chamber, with respect to a pneumatic piston (16) over a certain travel. ... | 05/30/2006 |
| 7043911 | Vehicle braking system master cylinder A master cylinder suitable for a vehicle braking system has an unusual capability to supply quantities of fluid and fluid pressures at its output in differentiated manner in dependence on the braking stage, preventing long transitory stages between an approach stage... | 05/16/2006 |
| 7021172 | Hydraulic throttle for vehicles A hydraulically operated throttle system that has the hydraulic system components installed entirely within the throttle grip on the handlebar. A regular throttle cable is run through the frame/handlebar where it connects to the hydraulic system. A three-piston syst... | 04/04/2006 |
| 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 |
| 6957871 | Vehicle brake device A more reliable hydraulic brake device is proposed which is capable of regenerative cooperative control and eliminates wasteful consumption of electric power. In a hydraulic brake device capable of regenerative cooperative control, a hydraulic pressure adjusting dev... | 10/25/2005 |
| 6948313 | Brake booster device for motor vehicle Braking device including a master cylinder (2), a primary piston (3), a control member (4), a booster (6) coupled to the control member (4), and an assist valve (VA) defined by a reaction piston (17) with a bore (18) ... | 09/27/2005 |
| 6912850 | Brake booster with high kick-off emergency valve A braking device for a motor vehicle, including a master cylinder (2) with a primary piston (3) subjected to an actuating force of an input force exerted by a manual operating member (4) and a boost force exerted by a booster (6) coupled ... | 07/05/2005 |
| 6904753 | Servobrake comprising a reduced-reaction master cylinder A servobrake (10) including a pneumatic brake booster (12) and a master cylinder (22) with a main piston (20) that slides in a front pressure chamber (24). The main piston (20) has a fixed first rear end (46) acted on... | 06/14/2005 |
| 6718765 | Brake booster device, with improved operating conditions, for motor vehicle A braking device comprising a master cylinder (2), a primary piston (3), a manual control member (4), a booster (6) coupled to the manual control member (4) and an emergency assist valve (VA). The emergency assist valve comprising ... | 04/13/2004 |
| 6668552 | Hydraulic brake booster A hydraulic brake booster has a housing with a stepped bore for retaining a cylindrical piston and a control bore for retaining a control valve. The cylindrical piston defines, with the stepped bore, an output chamber, a relief chamber and a power chamber... | 12/30/2003 |
| 6655139 | Servomotor with a finger-forming locking sleeve A pneumatic servomotor for an assisted braking of a motor vehicle having a unidirectional clutch device (56). The clutch device (56) has a coaxial sleeve (58) that slides on a plunger (46), and a substantially ring-shaped key (60) that is arranged with a ... | 12/02/2003 |
| 6591611 | Hydraulic brake booster A hydraulic brake booster (12) having a housing (100,200) with a first bore (102) separated from a second bore (104). The first bore (102) retains a power piston (50) and the second bore (104) retains a control valve (60). The first bore (102) is connecte... | 07/15/2003 |
| 6550245 | Hydraulic brake apparatus for a vehicle A vehicle hydraulic brake apparatus includes a brake member, a master cylinder generating brake hydraulic pressure, and a master piston movable in response to operation of the brake member. A closed chamber is defined by the master piston and a power pist... | 04/22/2003 |
| 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 |
| 6305166 | Master cylinder with dynamically adjustable hydraulic reaction A hydraulic-reaction master cylinder (2) having a working chamber (12) in which slides a hollow main piston (13) with a bore (130) therein which retains a reaction piston (14) to define a reaction chamber (15). The reaction chamber (15) has an annular sha... | 10/23/2001 |
| 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 |
| 6195993 | Master cylinder with hydraulic reaction and selective self-powering The invention relates to a master cylinder with hydraulic reaction for a pneumatic brake booster, comprising a main piston (12) receiving a boost force, and a reaction piston (3), mounted so that it can slide in a reaction chamber (4) of the main piston a... | 03/06/2001 |
| 6195994 | Master cylinder with hydraulic reaction operating with developing pressure The invention relates to a master cylinder with hydraulic reaction, comprising a working chamber (12) in which there slides a hollow main piston (13) inside which a reaction piston (14) delimits a reaction chamber (15) which communicates with the working ... | 03/06/2001 |
| 6185937 | Master cylinder with hydraulic reaction independent of viscosity A master cylinder with hydraulic reaction. The master cylinder having a housing with a working chamber (12) therein in which slides a hollow main piston (3). The main piston (3) has a bore (130) for retaining a reaction piston (14) to define a reaction ch... | 02/13/2001 |
| 6085522 | Boosted braking device with variable boost ratio and reduced hysteresis A braking device for a motor vehicle comprises a master cylinder (200) and a pneumatic booster (100). The pneumatic booster includes a rigid casing (10) divided by at least one moving partition (16) into at least two chambers (12, 14). A main hydraulic pi... | 07/11/2000 |
| 6082109 | Master cylinder with dynamic hydraulic reaction and floating piston A master cylinder with a main piston (12) located in a main bore (110) of a body (11). A reaction arrangement including a reaction piston (3) which slides in a secondary bore (120) in the main piston (12) for providing a reaction to a pneumatic booster. T... | 07/04/2000 |
| 6079208 | Master cylinder with hydraulic reaction capable of being cancelled A master cylinder having a main piston (12) located in a main bore (110) of a body (11) to define a working chamber (13), a reaction piston (3) located in a stepped bore (120) of the main piston (12) to define a reaction chamber (4) with components to pro... | 06/27/2000 |
| 6076351 | Power braking system with improved hydraulic reaction A boosted braking system for a motor vehicle having a master cylinder (200) equipped with a main hydraulic piston (30) for causing an increase in pressure (P1) of brake fluid and a pneumatic booster (22) which is controlled by the application o... | 06/20/2000 |
| 5941071 | Boosted braking device with hydraulic reaction and improved safety A boosted braking device for a motor vehicle having a master cylinder (200) and a pneumatic booster (100). The master cylinder (200) is equipped with a primary piston (30) which receives an actuating force to increase pressure in a primary hydraulic circu... | 08/24/1999 |
| 5921084 | Power-assisted braking device with a variable assistance ratio A boosted braking device for a motor vehicle having a master cylinder (200) and a pneumatic booster (100) operated by applying an input force to an operating rod (26). The booster (100) has a rigid casing (10) which is divided by a partition (16) into at ... | 07/13/1999 |
| 5735124 | Internally boosted master cylinder A brake system for use in connection with a vehicle including a hydraulic internally boosted master cylinder, a hydraulic pump, and hydraulic brakes wherein the master cylinder controls hydraulic fluid pressure to the brakes and has a primary or sensing p... | 04/07/1998 |
| 5572870 | Boosted brake device with concealed travel and guaranteed gain A brake device having a pneumatic brake booster and a master cylinder. The master cylinder operates in response to a combined actuation force derived from a boost force and an input force. The input force is applied to a control rod for opening a valve to... | 11/12/1996 |
| 5475978 | Booster brake device with concealed travel This boosted brake device comprises a pneumatic brake booster (1) associated with a master cylinder (2), the booster operating according to a hydraulic reaction principle and comprising a movable pneumatic piston (5) carrying a control valve (7) actuated ... | 12/19/1995 |
| 5090293 | Hydraulic booster with reaction force imparting surface of easily modifiable form A hydraulic booster for slip-controlled brake systems, including a booster piston (1) arranged in a booster housing (11) and confining a booster chamber (4). A braking pressure control valve is provided whose control part (12) is actuatable by a lever mec... | 02/25/1992 |
| 4875338 | Hydraulic brake booster arrangement with parallel master cylinders and common housing for pivotable rocker A brake unit having a hydraulic brake booster and twin master cylinders in a common housing. The brake booster comprises a drive cylinder between the master cylinders which can be subjected to the outlet pressure of a brake valve of the brake booster whic... | 10/24/1989 |
| 4787685 | Slip-controlled brake device for automotive vehicles including vacuum power generator assembly used both as brake power booster and as modulator A brake power-controlled brake device for automotive vehicles is provided with a hydraulic master cylinder (11) which is, via a pneumatically actuated pressure modulator (12), connected to at least one wheel cylinder brake circuit I. The pressure modulato... | 11/29/1988 |
| 4706546 | Booster ratio controller for liquid pressure booster A liquid pressure booster as may be used in a brake booster or clutch booster produces an oil pressure of a level which corresponds to the magnitude of an input applied to an input shaft. The oil pressure acts upon a power piston, which then produces an a... | 11/17/1987 |
| 4662688 | Vehicle hydraulic brake system The present invention starts from a vehicle hydraulic brake system comprising a master cylinder (2) actuatable by a hydraulic power booster (1) and containing a working chamber (12, 21), to which latter wheel brakes (36, 37, 38, 39) are connected by way o... | 05/05/1987 |
| 4660381 | Hydraulic booster with electrically driven plunger pump A hydraulic booster including an input piston adapted to be actuated by a manually operated member such as a brake pedal. The input piston is axially slidable in a power piston which is in turn axially slidable in a booster casing. The power piston divide... | 04/28/1987 |
