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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8096624 | Brake control apparatus for vehicle A brake control apparatus for a vehicle includes a first calculating portion for calculating a master cylinder pressure, a first determining portion for determining whether or not the brake operation is performed, a second calculating portion for calculating a targe... | 01/17/2012 |
| 8042883 | Braking device for vehicle To provide a brake device for a motor vehicle that can suppress variation in braking force applied to a wheel regardless of variation in friction coefficient between a rotator and a braking means in a fluid pressure brake. A brake device for a motor vehicle i... | 10/25/2011 |
| 7762632 | Passage connecting structure and master cylinder using the same A connecting structure between two passages includes a connecting sleeve including a large-diameter portion and a small-diameter portion with a shoulder surface defined therebetween. A recess is formed in the shoulder surface at its radially inner portion. When the ... | 07/27/2010 |
| 7644997 | Master cylinder with fill-up function A fill-up device of a master cylinder is included in a hydraulic brake system for an automotive vehicle and generates a hydraulic pressure corresponding to an operation of a brake operating member. A coupled switching valve is switched by being mechanically coupled ... | 01/12/2010 |
| 7497527 | Reshaping device with ejector and method of ejecting workpieces A reshaping device according to the invention has at least one ejector, for example, in the form of a cylinder pin (11) which is shifted by the workpiece (6) against the pressure from a pressure storing cylinder (17) or other suitable energy sto... | 03/03/2009 |
| 7461907 | Rod/seal bearing arrangement utilizing locking fingers An improved seal/bearing arrangement employs an O-ring type seal which has segmented fingers. The seal ring has a recess which is sized to mate with a corresponding projecting lug of a bore use, for example, in brake actuator mechanisms. The seal ring can be made fr... | 12/09/2008 |
| 7410223 | Vehicle hydraulic brake device A hydraulic brake device includes a hydraulic pressure supply passage for reducing the output hydraulic pressure by a first proportional solenoid valve and supplying it to a hydraulic passage leading from a pressure adjusting valve to the wheel cylinders, a second p... | 08/12/2008 |
| 7293843 | Braking system for vehicle A braking system for a vehicle, including a braking device which puts brake on a vehicle; an operating device which includes an operating member that is operated by a driver of the vehicle in a braking force increasing direction, that is, an operating direction in w... | 11/13/2007 |
| 7261382 | Reservoir tank for vehicle brake system A reservoir tank has an inlet/outlet port communicating with a master cylinder, and a hydraulic fluid supply port provided directly opposite the inlet/outlet port. A tubular portion is provided on the inner surface of the tank. The tubular portion has an internal pa... | 08/28/2007 |
| 7252345 | Brake system for a motorcycle A combined braking system in which communicative connection a master cylinder and a brake caliper is cut off by an electromagnetic on-off valve, and hydraulic pressure, corresponding to driving conditions and a braking operation, is generated by an electrically-oper... | 08/07/2007 |
| 7244002 | Vehicle brake system A brake-by-wire type vehicle brake system is arranged to return a piston of a master cylinder to a normal position by opening a shutoff valve so as to supply a hydraulic pressure of a pump to the master cylinder when the shutoff valve is closed and a stroke simulato... | 07/17/2007 |
| 7232190 | Reservoir for a hydraulic circuit A tank according to the invention comprises a casing, a filling port (5) extending, on the outside of said tank, into a filling neck (7), which is provided with a screw thread having a pitch (p) and which cooperates with a cap (9). The inner sur... | 06/19/2007 |
| 7213672 | Vehicle hydrostatic transmission circuit A hydrostatic transmission circuit for a vehicle having at least two displacement members (12) driven by at least one hydraulic motor (10) having a feed main duct and a discharge main duct (16, 18). Skid control means for controlling skidding of... | 05/08/2007 |
| 7204567 | Method and device for detecting residual pressure in a braking system in particular in a braking cylinder According to the invention, the existence of residual pressure in the braking system is determined by means of continuous rough monitoring of the pressure in said system. If the existence of said residual pressure is established, then a fine monitoring process is ca... | 04/17/2007 |
| 7188913 | Vehicular motor-driven brake device A vehicular motor-driven brake apparatus includes an open circuit in which reciprocation of a master cylinder generating a brake pressure is caused by an actuator that operates according to a pedal operation amount, and brake fluid discharged from a wheel cylinder d... | 03/13/2007 |
| 7104612 | Vehicle brake hydraulic pressure generator A brake hydraulic pressure generator is proposed which is simple in structure and can suppress fluctuations in the brake pedal operating amount due to fluctuations in the amount of brake fluid consumed in the brake circuit. The brake hydraulic pressure generator inc... | 09/12/2006 |
| 6988778 | Pneumatic brake booster, particularly for a motor vehicle A pneumatic brake booster for use in a motor vehicle having a feeler (42) mounted to slide on a plunger (32) located at the end of a control rod (22) and pivoting key (62) for axially blocking the movement of the feeler (42) with r... | 01/24/2006 |
| 6910745 | Check valve with vibration prevention function In a check valve of the present invention, when a pressure action direction of a fluid on a valve body is assumed to be X, a spring receiving surface that abuts with a seat surface that is at one end in an axial direction of the helical compression spring is made to... | 06/28/2005 |
| 6494547 | Brake system for electric motor-powered vehicle Improving operating feelings and energy saving are aimed for a brake system of the type in which a predetermined differential pressure is produced between a master cylinder and wheel cylinders by a hydraulic pressure limit/changeover device during regener... | 12/17/2002 |
| 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 |
| 6345869 | Brake cylinder pressure control apparatus with controller for controlling pressurizing device based on operating state of pressure control valve device A braking pressure control apparatus for a braking system having brake cylinders including a pressurizing device capable of pressurizing a working fluid and controlling a pressure of the pressurized fluid, a plurality of pressure control valve devices eac... | 02/12/2002 |
| 6318816 | Vehicle brake apparatus A vehicle brake apparatus includes a brake pedal, a wheel brake cylinder operatively mounted on a wheel for applying a braking force to the wheel in proportion to a hydraulic braking pressure, a pressure source for pressurizing brake fluid to generate a h... | 11/20/2001 |
| 6302498 | Pressure-adjusting reservoir for ABS and vehicle brake device using the same A pressure-adjusting reservoir which can reduce an unstable movement of a ball valve therein to release a pulse of brake fluid. The pressure-adjusting reservoir has a pressure-adjusting valve constructed so that a tip portion of a pin pushes up a ball val... | 10/16/2001 |
| 6270169 | Rotary pump and braking device using same In a rotary pump, an outer rotor and an inner rotor are assembled in a casing such that, when a clearance between an inner teeth portion of the outer rotor and an outer teeth portion of the inner rotor is substantially nullified at a first closed gap port... | 08/07/2001 |
| 6267456 | Brake master cylinder and pedal feel emulator A master cylinder (12) and pedal feel emulator (10) useful in a brake-by-wire system. A bore (18) of the master cylinder contains three pistons (22, 34, and 28), in tandem, that divide the bore into various zones (26, 24, 32, 30). The emulator contains a ... | 07/31/2001 |
| 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 |
| 6227521 | Graduated release valve An apparatus incrementally reduces pressure in a first volume in response to an increase in pressure in a second volume. A valve body defines a bore that houses a piston and supply and return passages that communicate with first and second ends of the bor... | 05/08/2001 |
| 6213564 | Anti-lock brake system with piezoelectric brake actuator An anti-lock braking system includes a moveable member to be braked and a friction brake for applying a braking force. A controller actuates the friction brake in accordance with braking force demands. Braking force demands are determined by the controlle... | 04/10/2001 |
| 6206486 | Brake apparatus for a vehicle In a brake apparatus provided with an actuator for controlling brake fluid pressure applied to a wheel cylinder, a non-return valve disposed in a conduit connected to a master cylinder so as to allow brake fluid to flow toward the master cylinder. The non... | 03/27/2001 |
| 6185498 | Electronically controllable brake booster An electronically controllable brake booster with a vacuum chamber and a pressure chamber, which are separated from each other by a movable wall, a control valve arrangement which can be actuated by an electromagnetic actuation device, through which a pre... | 02/06/2001 |
| 6142581 | Hydraulic circuit having a rotary type pump and brake apparatus for a vehicle provided with the same A hydraulic circuit has a rotary type pump comprising a rotor rotating with a driving shaft and a casing which holds the rotor and the driving shaft. The casing further comprises an inlet port through which fluid is introduced to spaces formed by the roto... | 11/07/2000 |
| 6139119 | Brake stroke simulator and method A brake stroke simulator for achieving good stroke feeling in a vehicular brake apparatus has a first piston being displaceable by receiving a master cylinder pressure, and a second piston disposed so as to form a gap between the second piston and the fir... | 10/31/2000 |
| 6126249 | Brake pressure control devices A brake pressure control system is proposed which operates on the fluid-return principle. This system includes a low pressure accumulator which must be emptied upon termination of a braking operation with brake pressure control. In this way, the emptying ... | 10/03/2000 |
| 6120111 | Brake hydraulic circuit for motor vehicles A brake hydraulic pressure circuit for increasing the speed of pressure increase at the wheel cylinder by the simple hydraulic circuit. An accumulator is connected to the discharging side of the pump of the hydraulic return circuit via a first switching v... | 09/19/2000 |
| 6106078 | Pressure augmentation for brake apply system A brake apply system includes a pressure charging module having a bore carrying a pumping piston that has a base piston surface and an augmentation piston surface. The pressure charging piston separates the bore into an input chamber adjacent the base pis... | 08/22/2000 |
| 6099087 | Hydraulic braking systems for vehicles In a braking system in which brake application is controlled electronically by the use of electrically controlled actuators (5, 6), a pedal-operated hydrostatic master cylinder (31) is connected to a brake (12) through at least one of the actuators (5). A... | 08/08/2000 |
| 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 |
| 6024421 | Media divider for vehicle hydraulic brake systems A media divider has a divider piston, which is received in a cylinder bore and embodied as a tubular deep-drawn part. Two pairs of a sealing ring and an annular guide part disposed side by side are provided, whose axial spacing is defined by at least one ... | 02/15/2000 |
| 6003961 | Method and apparatus for controlling a braking system of a vehicle A method and an apparatus for controlling a braking system of a vehicle. The braking action is established or regulated at at least one wheel brake, by electrical structure, as a function of a driver's braking input. A capability for conventional action b... | 12/21/1999 |
| 5951121 | Device for detecting operation of brake pedal A device for detecting operation of a brake pedal comprises: a first hydraulic chamber 9 in which fluid is pressurized by a first piston 7 connected with a brake pedal 1 when the brake pedal 1 is pushed downward; a second hydraulic chamber 13 communicated... | 09/14/1999 |
