| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 060585000 | Holder for reserve liquid feeds master | 44 |
| 20080256948 | Reservoir and master cylinder - An object of the present invention is to provide a reservoir capable of shortening a time period required to fill a brake system and a clutch system with a fluid with vacuuming in case where the reservoir has a brake reservoir chamber to be connected to a brake master cylinder of the brake system and a clutch reservoir chamber to be connected to a clutch master cylinder of the clutch system. Provided is a reservoir | 10-23-2008 |
| 20090013685 | MASTER CYLINDER FOR VEHICLE BRAKE SYSTEM - A master cylinder for brake systems includes a housing defining a cavity. A plunger is movably disposed in the cavity, and includes an open end that receives a portion of a stationary member positioned within the housing. The plunger and stationary member control flow of brake fluid through the housing. | 01-15-2009 |
| 20090025385 | Master cylinder - An object of the present invention is to make it possible to easily improve precision with which the valve body is seated on the valve seat of the check valve, and provide a master cylinder which can be easily manufactured and in which high precision is realized. In a master cylinder, a supply passage for supplying operating liquid from a reservoir | 01-29-2009 |
| 20090090105 | Master Cylinder - A master cylinder according to the invention has a predetermined number of second axial grooves formed on an outer peripheral surface of a tip portion of a secondary piston at predetermined intervals apart in a circumferential direction. Second radial holes are formed at the rear ends of some of the second axial grooves penetrate between the inner and outer peripheral surfaces of the piston. In an inoperative state, the rear ends of the second axial grooves and the second radial holes are all located to the rear of a seal point of a second cup seal, and a second fluid supply chamber is connected to a second hydraulic pressure chamber via the second axial grooves and the second radial holes. When the rear ends of the second axial grooves and the second radial holes are all moved in front of the seal point, the second fluid supply chamber is disconnected from the second hydraulic pressure chamber. Consequently, brake fluid supply performance is ensured and the processing of the piston is simplified as well as piston strength being ensured. | 04-09-2009 |
| 20090113891 | MASTER CYLINDER WITH U-SHAPED SEAL - Our problem relates to a master cylinder with a U-shaped seal. Our goal is to avoid defective bleeding of hydraulic braking systems. The defects arise out of the fact that the vacuum causes the lips of the seal ( | 05-07-2009 |
| 20090126362 | VEHICLE MASTER CYLINDER CONNECTED TO AN AUXILIARY BRAKING DEVICE - The invention relates to a motor vehicle master cylinder ( | 05-21-2009 |
| 20090288412 | MASTER CYLINDER WITH REDUCED FREE TRAVEL - The invention relates to a master cylinder ( | 11-26-2009 |
| 20100154409 | Fluid pump device for vehicle braking systems - A pump device and method minimizes the quantity of air in a vehicle brake system by reducing the volume of detrimental space. The device includes a piston movable between first and second end points, a line system that conducts fluid through the device, and a closing element, movable between an open position releasing the flow of the fluid and a closed position interrupting the fluid flow, that selectively releases the flow of the fluid through the device. The line system includes a through-line formed in the piston for conducting the fluid through the piston. By virtue of a section of the through-line that receives the closing element in the piston, a force is generated that is transmittable from the fluid to the closing element that moves the closing element in the direction of its closed position when the piston is moving in the direction of the first end point. | 06-24-2010 |
| 20100223923 | System and device for uncoupling hydraulic plants - System for controlling the motion of an actuator of a hydraulic system that may be embodied as a circuit or device that, interposed between a pump and the actuator, controls the motion of the actuator, causing the actuator to follow the movement of the pump. The present invention relates both to a system and a device providing such result just on the basis of the measures of the fluid circulating within the hydraulic circuit or device. The system according to the present invention is suited both with opposing loads and dragging loads. | 09-09-2010 |
| 20100229547 | RESERVOIR TANK AND BRAKE DEVICE USING THE RESERVOIR TANK - Hydraulic fluid is supplied from a hydraulic fluid supply opening to a hydraulic fluid supply portion. The hydraulic fluid in the hydraulic fluid supply portion is supplied to a primary hydraulic fluid storage chamber and to a secondary hydraulic fluid storage chamber via a hydraulic fluid supply passage. An oblong cylinder-shaped portion that has a chamber is formed between the hydraulic fluid supply opening and the hydraulic fluid supply portion. Further, a volume-augmented chamber forming portion that has a volume-augmented chamber that is communicated with the chamber is disposed in this oblong cylinder-shaped portion. In that case, at least part of the volume-augmented chamber is positioned above a MAX line of the hydraulic fluid. | 09-16-2010 |
| 20100287930 | BRAKE FLUID RESERVOIR AND INSTALLATION FOR THE MANUFACTURE OF SUCH A RESERVOIR - Reservoir in which the walls ( | 11-18-2010 |
| 20100313560 | HYDRAULIC PRESSURE APPARATUS AND BRAKE PRESSURE CONTROL APPARATUS USING THE SAME - An open port is provided on an inner peripheral surface of the cylinder bore of the reservoir apparatus and the port is exposed to the exterior of the reservoir apparatus. A hollow portion is formed concentrically with the port on a reservoir body. An annular thin portion is formed between the inner peripheral surface of the cylinder bore and the hollow portion surrounding the port in a radial direction. The thin portion is outwardly deflected and deformed by being pushed outwardly in a radial direction centering on the port in a range narrower than the inner diameter of the hollow portion. Thus, the opening of the port is outwardly sunk from the inner peripheral surface of the cylinder bore thereby to form a curved surface at a root portion of the thin portion on the inner peripheral surface of the cylinder bore. | 12-16-2010 |
| 20110209472 | CUP SEAL, AND MASTER CYLINDER IN WHICH IT IS USED - A cup seal ( | 09-01-2011 |
| 20110239641 | BRAKE FLUID PRESSURE CONTROL DEVICE FOR VEHICLE - A brake fluid pressure control device for a vehicle includes: a base body; reservoirs to store brake fluid in the base body; and a single lid member secured to the base body. The reservoir has a reservoir hole, a piston that slides inside the reservoir hole, and a spring that biases the piston. The lid member hermetically seals the reservoir holes. The lid member includes a plate member with which the springs make contact and a ring-shaped sealing member held between one face of the base body to which the plate member is secured and the other face of the plate member opposed to the one face to provide a sealing function. In the lid member, a screw hole is disposed outside a region surrounded by the sealing member and a communication passage communicating with the reservoir holes is provided inside the region. | 10-06-2011 |
| 20110296827 | Master Cylinder - In order to make the idle stroke which occurs as small as possible in a master cylinder, in particular for a clutch, actuating or brake system of a vehicle, comprising a cylinder housing with a piston bore, a piston arranged in the piston bore and having an end side facing a cylinder chamber and at least one afterflow opening which leads from a piston skirt surface through a piston wall to the cylinder chamber at a distance from the end side and adjoins an afterflow space in a pressure equalization position of the piston so that in the pressure equalization position hydraulic medium can run on into the cylinder chamber in order to equalize the pressure, and an inner sealing element which is arranged between the housing and the piston in the area of the piston bore and limits the cylinder chamber, it is suggested that the afterflow space be arranged between the sealing element and the piston skirt surface on a side of a sealing lip of the sealing element facing away from the cylinder chamber and that in the pressure equalization position the afterflow opening be arranged so as to be located opposite an inner surface of the sealing element limiting the afterflow space. | 12-08-2011 |
| 20110302916 | Seal Member For A Hydraulic Braking System - A sealing member for a piston slidably disposed within the cylinder bore of a hydraulic system includes a seal body having an outer sealing surface arranged to contact the cylinder bore and a glide ring at least partially disposed within the outer sealing surface of the seal body. The glide ring includes an outer surface and the outer sealing surface of the seal body includes at least one seal lip projecting beyond the outer surface of the glide ring. | 12-15-2011 |
| 20110308246 | ASSEMBLY COMPRISING A FLUID RESERVOIR AND A MASTER CYLINDER FOR A MOTOR VEHICLE HYDRAULIC BRAKE SYSTEM - An assembly includes a fluid reservoir and a master cylinder for a motor vehicle hydraulic brake system, the fluid reservoir being fastened to the master cylinder by a releasable connection and including at least one connection fitting, which is received in a corresponding connection aperture of the master cylinder. The fluid reservoir includes one or more components, which under a defined force applied to the fluid reservoir, allow a movement of at least one part of the fluid reservoir in the direction of the master cylinder. | 12-22-2011 |
| 20120067043 | PUMP BODY FOR GOVERNING HYDRAULIC ACTUATORS OF DISK BRAKES FOR BICYCLES AND MOTORCYCLES - A pump body for governing hydraulic actuators ( | 03-22-2012 |
| 20120096850 | Master Cylinder for a Hydraulic Actuation System for a Handlebar-Steered Vehicle - A master cylinder assembly for a hydraulic actuation system for a handlebar-steered vehicle. The master cylinder assembly generally includes a housing mountable to a frame member of the handlebar-steered vehicle and having a chamber including a fluid cavity with first and second fluid cavity regions. The first fluid cavity region is in fluid communication with the hydraulic actuation system. The housing includes discrete first and second housing portions. The first housing portion has first and second end portions. The first end portion of the first housing portion extends axially into the second fluid cavity region creating an annular gap radially outboard of the first end portion extending into the second fluid cavity region. The second end portion of the first housing portion is connected to the hydraulic actuation system. A piston assembly includes a piston slidably disposed within the fluid cavity. An actuator is operatively connected to the housing and operatively connected to the piston to slidably displace the piston between an open fluid circuit position permitting fluid flow between the first and second fluid cavity regions and a closed fluid circuit position blocking fluid flow between the first and second fluid cavity regions. | 04-26-2012 |
| 20120096851 | Master Cylinder Lever for a Bicycle Hydraulic Disc Brake - A master cylinder for a bicycle hydraulic disc brake configured to be disposed on either a right or left portion of a bicycle handlebar without effecting operation of the master cylinder by a user. | 04-26-2012 |
| 20120186246 | MASTER CYLINDER IN PARTICULAR FOR A CONTROLLED MOTOR VEHICLE BRAKE SYSTEM - The invention relates to a master cylinder, in particular for a controlled motor vehicle brake system, including a first and a second piston which is displaceable in a housing and has a captive spring, a first end of the spring bearing at least indirectly against the piston and a second end thereof against a sleeve which is displaceable with respect to the piston and the movement of which with respect to the piston is limited by a pin provided on the piston and by a stop washer, the stop washer being arranged on a free end of the pin. In order to avoid impact noise upon rapid release of the brake, the stop washer of the first piston has a device for the damped abutment of the sleeve. | 07-26-2012 |
| 20120192556 | Hydraulic Main Brake Cylinder - A hydraulic main brake cylinder, preferably having an electro-mechanical brake booster for a brake assembly of a vehicle is disclosed. The main brake cylinder is provided with two pressure rod pistons, preferably nesting within each other, one of which is actuated by muscle power, and the other one is actuated by the brake booster. Furthermore, an energy store is provided, which stores energy when the main brake cylinder is released and then transferred to the main brake cylinder upon the actuation thereof, thus supporting the operation of the main brake cylinder. | 08-02-2012 |
| 20120204554 | MASTER CYLINDER HYDRAULIC FLUID FLOW CONTROL VALVE, MASTER CYLINDER PROVIDED WITH THE MASTER CYLINDER HYDRAULIC FLUID FLOW CONTROL VALVE, AND BRAKE DEVICE PROVIDED WITH MASTER CYLINDER - Provided is a master cylinder hydraulic fluid flow control valve which can effectively decrease a pressure receiving area of a floating valve element when the floating valve element is seated on a valve seat, can favorably maintain a sealing function of a sealing member, and can suppress the increase of the number of assembling operation man-hours. | 08-16-2012 |
| 20130025274 | CONTAINER, PARTICULARLY FOR HYDRAULIC VEHICLE BRAKE SYSTEMS - The invention relates to a reservoir, in particular for hydraulic motor vehicle brake systems, having one or more pressure medium chambers, a filler neck for filling the reservoir with pressure medium and a pressure medium passage, which is connected to the filler neck and has an opening facing the pressure medium chamber. In order to provide a reservoir which reliably prevents the pressure medium from leaking when the vehicle is in extreme positions and which, at the same time, can be produced in a simple and inexpensive manner, the proposal according to the invention is that the pressure medium passage be provided as a lateral channel which extends in the longitudinal direction along the reservoir, starting from the filler neck, and be formed by walls of an upper part and of a lower part of the reservoir. | 01-31-2013 |
| 20140144131 | Energy Efficient Variable Displacement Dosing Pump - An improved diaphragm type chemical dosing pumps can be designed as both a variable displacement accurate dosing pump and a fixed displacement accurate dosing pump. The improved dosing pump provides a required supply of pressurized fluid, to be called hereafter as process fluid, to an injection point against varying gas or liquid pressures. By eliminating the use of elastomeric sealing, the failing of the pump due to seal wear is eliminated. An internal pressure relief valve protects the pump mechanicals from premature failure. Use of a spring assisted suction assists positive suction for very accurate dosing. The working fluid is a driver fluid that is used to lubricate working components of the pump. The angled ports minimize friction losses to further improve pump efficiency and also eliminate building up of air pockets. | 05-29-2014 |
| 20140196453 | RESERVOIR TANK OF BRAKE MASTER CYLINDER - Disclosed herein is a reservoir tank of a brake master cylinder. The reservoir tank includes a reservoir body to store oil therein, the reservoir body being provided with an oil introduction port, a filter interrupted by a fixing step arranged at a lower portion of the oil introduction port, and a reservoir cap arranged at an upper portion of the oil introduction port, wherein a vent member is provided between the fixing step and the filter, to allow inflow of air through during introduction of oil. | 07-17-2014 |
| 20150007559 | BRAKE APPARATUS - In a system including a reservoir tank RSV integral with a master cylinder M/C, an inlet fluid passage | 01-08-2015 |
| 20150082786 | CYLINDER DEVICE - A cylinder device, which is provided with: a substrate having a cylinder hole and a reservoir union port; a piston which is inserted into the cylinder hole; a regulation member which regulates the rearward limit of the piston; a reservoir having a liquid supply part; and a seal member which is for the reservoir and which is externally fitted to the liquid supply part. Therein: the substrate comprises a mounting hole and a first communication hole which open to the reservoir union port and the cylinder hole; the regulation member is inserted into the mounting hole ( | 03-26-2015 |
| 20150113977 | Master Brake Cylinder Arrangement for a Motor Vehicle Brake System, and Integral Sealing Throttle Element for the Same - A master brake cylinder arrangement ( | 04-30-2015 |
| 20160031425 | BRAKE APPARATUS AND BRAKE SYSTEM - A brake apparatus improved in mountability on a vehicle is provided. | 02-04-2016 |
| 20160059926 | HYDRAULIC OPERATING DEVICE FOR A BICYCLE - A hydraulic operating device according to the present invention at least comprises a master cylinder, a reservoir fluidly connected to the master cylinder and having an opening, and a first cover configured to cover the opening of the reservoir so as to contact with a fluid, the first cover being sufficiently rigid so as to keep shape of the first cover when the master cylinder is actuated to flow the fluid into and out of the master cylinder. | 03-03-2016 |
| 20160176390 | Master Brake Cylinder Assembly of a Motor Vehicle Brake System Having a Filter Element, and Fluid Reservoir and Insert Element Therefor | 06-23-2016 |
| 20160200303 | MASTER CYLINDER | 07-14-2016 |
| 20160200304 | MASTER CYLINDER | 07-14-2016 |
| 060586000 | Having means to establish holding pressure in pulse liquid | 2 |
| 20130074491 | Sub Master Cylinder and Brake Apparatus Having The Same - A sub master cylinder includes a body formed with a chamber in which oil is stored; a first sub piston having one end which is secured to one end of the body and the other end which extends toward the other end of the body and is disposed to cross the chamber; and a second sub piston disposed between an inner surface of the body and an outer surface of the first sub piston to be moved in the chamber. | 03-28-2013 |
| 060587000 | Pressure maintained through inlet or piston cylinder of master | 1 |
| 20110308247 | MASTER CYLINDER WITH FLOW GROOVE - A master cylinder includes a cylinder bore, a first piston positioned within the cylinder bore, a second piston positioned within the bore and located forwardly of the first piston, a first pressure chamber within the cylinder bore and defined in part by a rear portion of the second piston and a forward portion of the first piston, a first pressure chamber seal extending radially outwardly from the rear portion of the second piston, a first reservoir inlet configured to provide fluid communication between a reservoir and the cylinder bore at a location forwardly of the first pressure chamber seal, and a first groove extending axially along the cylinder bore and positioned such that (i) when the second piston is in a released position, the first groove is located directly outwardly of the first pressure chamber seal and the reservoir is in fluid communication with the first pressure chamber through the first groove, and (ii) when the second piston is in an activated position, the first pressure chamber seal isolates the reservoir from the first pressure chamber at a location forwardly of the first groove. | 12-22-2011 |
| 060588000 | Master piston traps liquid on advance across a feed port in cylinder wall | 6 |
| 20080216473 | MASTER CYLINDER OF BRAKE - A master cylinder of a brake is disclosed. The master cylinder includes a cylinder body connected with an oil tank and defining therein a first pressure chamber and a second pressure chamber, which are separated from each other by a partition, a first piston to perform reciprocating movements in the first pressure chamber, a second piston to perform reciprocating movements in the second pressure chamber, a first return spring to elastically support the first piston in the first pressure chamber, and a second return spring to elastically support the second piston in the second pressure chamber. The first piston has a plurality of recesses formed at one end thereof to assure smooth supply of oil during braking. The master cylinder has the effects of assuring smooth supply of brake oil during braking, and preventing fluctuation of a piston therein. | 09-11-2008 |
| 20080223034 | Master cylinder - Disclosed is a master cylinder comprising a stepped cylinder having a large diameter cylinder portion and a small diameter cylinder portion, a stepped piston inserted into the stepped cylinder, a reverse-flow-checking opening and closing portion for partitioning the inside of the stepped cylinder into a large diameter pressurizing chamber and a small diameter hydraulic chamber, and a control valve device in which a control valve body releases a hydraulic pressure in the large diameter pressurizing chamber to a reservoir side such that the hydraulic pressure in the large diameter pressurizing chamber is gradually reduced in accordance with a rise in a hydraulic pressure in the small hydraulic chamber, the master cylinder characterized in further comprising a check valve device comprising a check valve chamber communicating with an relief passage, which releases a hydraulic pressure in the large diameter pressurizing chamber to the reservoir via the control valve device, and with a small diameter hydraulic chamber, respectively, and a check valve body accommodated in the check valve chamber for permitting flow of a brake fluid from the relief passage to the small hydraulic chamber, and for preventing flow of the brake fluid in a reverse direction. | 09-18-2008 |
| 20080271446 | Master Cylinder Lever with Variable Dead Band and Variable Reach Adjustment Independent of the Dead Band Adjustment - A master cylinder for a bicycle hydraulic disc brake comprises a housing defining a cylinder, the cylinder having a first and a second end along its axis. A hydraulic fluid reservoir has a port between the hydraulic fluid reservoir and the cylinder, the port having an opening between the first and second cylinder ends. A piston having a seal resides in the cylinder with the seal between the piston and the cylinder. The seal has a leading seal edge with the leading seal edge being movable solely between the first cylinder and the port opening to vary the dead band distance between the leading seal edge and the port opening with the piston in a starting position. A lever is pivotably associated with the housing and operatively associated with the piston for moving the piston within the cylinder between the starting and a pressurized position as the lever is actuated between a rest position and an actuated position. A reach adjustment is operatively associated with the lever for varying the rest position of the lever relative to the master cylinder housing independent of movement of the leading seal edge relative to the port as the reach adjustment varies the rest position of the lever. | 11-06-2008 |
| 20080289329 | MASTER CYLINDER COMPRISING A RESUPPLY-PROMOTING SEAL - Brake master cylinder ( | 11-27-2008 |
| 20080289330 | MASTER CYLINDER COMPRISING A SEAL AND AN ASSOCIATED GROOVE PROMOTING RESUPPLY - Brake master cylinder ( | 11-27-2008 |
| 20150047338 | MASTER CYLINDER - A circumferential wall of a circumferential groove near a bottom section of a cylinder main body has an outer wall section extending from a bottom section of the circumferential groove in a radial direction of the cylinder main body, a stepped surface section extending from the outer wall section in a bottom direction of the cylinder main body, and an inner wall section having a flat surface section parallel to the radial direction of the cylinder main body and formed further inside in the radial direction of the cylinder main body than the stepped surface section. The inner wall section is formed at a position at which the center lip section first abuts the inner wall section prior to the outer wall section when the seal member moves toward the bottom section of the cylinder main body. | 02-19-2015 |
| 060589000 | Master piston or its actuator mechanically operates valve between holder and master cylinder | 2 |
| 20080196403 | Master Cylinder - The present invention is directed to apparatus, systems, and methods for incorporating a master cylinder into a hydraulic brake system. An embodiment of the present invention includes a housing, a bore extending through the housing, a cover, and a groove formed in the cover. The housing includes a fluid reservoir formed therein. The bore is capable of supporting a movable piston to actuate the hydraulic braking system. The cover is secured to the housing and the groove in the cover descends away from the center of the cover such that the groove is capable of directing fluid away from the center of the cover. | 08-21-2008 |
| 20080236161 | Differential hydraulic master cylinder - A differential hydraulic master cylinder ( | 10-02-2008 |
