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| Number | Title | Issue Date |
| 8156740 | Master cylinder with reduced free travel The invention relates to a master cylinder (1) with reduced free travel (23). Current master cylinders have a free travel during the displacement of a piston (6) in a bore (5) of a master cylinder body (3). Such a free travel may b... | 04/17/2012 |
| 8109088 | 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 (21) to stick together and to stick against the ... | 02/07/2012 |
| 8051657 | Plunger-typed master cylinder for brake system of vehicle According to the plunger-typed master cylinder of the invention, because deformation of seal cups fitted in the hydraulic pressure chambers with the pistons (primary piston and floating piston) inserted is minimized, that is, the deformation of the inner flange bein... | 11/08/2011 |
| 7997075 | Master cylinder, especially for a controlled brake system A master cylinder 1, especially for a controlled brake system, includes at least one piston 3, 4; 53, 54 displaceable in a housing 2, which is sealed in relation to a pressure chamber 7, 8 by means of a sealing element 5, 6 arrange... | 08/16/2011 |
| 7966813 | Sealing element for a brake cylinder of a vehicle braking system A sealing element seals a pressure piston which is movably arranged in a housing of a brake cylinder. The sealing element may be inserted into a ring-shaped groove which is provided in the housing. The sealing element includes an outer sealing lip for contact with a... | 06/28/2011 |
| 7963113 | Cylinder device A cup seal 21 includes a base portion 21a, an inner circumferential lip 21b slidingly contactable with a plunger 19 and an outer circumferential lip 21c contactable with the bottom surface 26a of ... | 06/21/2011 |
| 7937940 | Master cylinder comprising a resupply-promoting seal Brake master cylinder (10) for a motor vehicle, of the type which comprises a substantially axial body (12) inside a bore (14) of which at least one axial piston is slideably mounted, of the type in which the bore (14) comprises two seals... | 05/10/2011 |
| 7934378 | Master cylinder comprising a seal and an associated groove promoting resupply Brake master cylinder (10) for a motor vehicle, of the type which comprises a substantially axial body (12) inside a bore (14) of which at least one axial piston is slideably mounted, of the type in which the bore (14) comprises two seals... | 05/03/2011 |
| 7866155 | Master cylinder and method of manufacturing the same An object of the present invention is to provide a master cylinder capable of controlling an increase in an intruding amount of a cup seal while relieving a stress concentration therein to thereby prevent the cup seal from being damaged. Provided is a master cylinde... | 01/11/2011 |
| 7694516 | Master cylinder, master cylinder body, and method for producing master cylinder A master cylinder that can prevent impairment of a piston seal, and a method of producing the master cylinder are provided. A master cylinder has a circumferential groove (47) in which a piston seal is provided, the piston seal having an outer circumference w... | 04/13/2010 |
| 7520132 | Cup seal and master cylinder employing the same In a cup seal of the present invention, an inner lip (27b) is pressed into close contact with a piston (9) and an outer lip (27c) is pressed into close contact with a bottom wall (26a) of a concavity (26) by fl... | 04/21/2009 |
| 7401468 | Master cylinder A piston seal is provided in a circumferential groove formed in a cylinder body. The piston seal is capable of sealing a pressure chamber, which supplies fluid pressure to a discharge passage, from a supply passage, which communicates with a reservoir. The piston se... | 07/22/2008 |
| 7386979 | Plunger type master cylinder A master cylinder includes a piston received in a cylinder body and formed with piston ports. An annular groove is formed in the inner periphery of the piston in its area where the piston ports are formed. An arcuate plate is received in the annular groove. A sleeve... | 06/17/2008 |
| 7360632 | Apparatus for controlling hydraulic brakes in bicycles, motorbicycles and the like Apparatus for controlling brakes in bicycles and the like, to be used, in particular, for disc brakes mounted on bicycles, with a pump (8) connected with a relevant reservoir (88) for the fluid of the hydraulic circuit, and comprising a piston (89 | 04/22/2008 |
| 7343741 | Vehicle master cylinder A master cylinder (1) having a bore (3) fitted with at least one piston (4, 5) and at least one seal (19, 20, 21, 22). The seal (19, 20, 21, 22) is partially stiffened by a reinforcement member (25). In order to retain the p... | 03/18/2008 |
| 7334668 | Leakproof sleeve for disc brake of bicycle A disc brake mechanism, mounted at a joining portion of handlebar and brake lever of bicycle, includes a spring anchored in a closed receptacle; a staged hole opposite the receptacle and having threads proximate its mouth; a channel for communicating the receptacle ... | 02/26/2008 |
| 7263830 | Master cylinder A large-diameter bore portion is formed in a portion defining a pressure chamber in a cylinder body on a side opposite to a circumferential groove relative to a slidable inner-diameter portion. A communication groove capable of allowing communication between the cir... | 09/04/2007 |
| 7222703 | Apparatus for controlling hydraulic brakes in bicycles, motorbicycles and the like Apparatus for controlling brakes in bicycles and the like, made with a pump connected to a relevant reservoir, characterized in that the reservoir is disposed inside a containment body and exhibits a concave portion shaped complementarily to a handlebar's portion to... | 05/29/2007 |
| 7221736 | Expansion device for fluid coolant/insulation in a x-ray apparatus In an expansion device for an x-ray apparatus, in particular with a rotary piston x-ray tube with a sealed coolant and/or insulation volume under a minimum pressure and pressing with this minimum pressure against an elastic pressure element, an elastic pressure elem... | 05/22/2007 |
| 7219495 | Hydraulic cylinder A hydraulic cylinder includes a housing having a fluid connection for connecting to a hydraulic system and an after-running connection for connecting to a fluid after-running vessel, and a piston which is axially displaceable in the housing to define a variable pres... | 05/22/2007 |
| 7219595 | Master cylinder housing A master cylinder housing including an outer shell having an open end and a closed end, a polymeric inner lining received within the outer shell, and a mounting flange extending from the open end of the outer shell. ... | 05/22/2007 |
| 7202426 | Master cylinder position switch A clutch assembly having a master cylinder that includes non-contacting position switches is disclosed. The master cylinder controls a slave cylinder that shifts the release bearing of the clutch system. A cruise control interrupt switch and an ignition system inter... | 04/10/2007 |
| 7197875 | Hydraulic cylinder with coaxial, in-line reservoir A compact hydraulic cylinder may include a pressure chamber and a reservoir in coaxial, in-line arrangement relative to one another. The pressure chamber and reservoir are separated from one another in use by a piston and hydraulic seal. The piston may be withdrawn ... | 04/03/2007 |
| 7194860 | Hydraulic cylinder, in particular master cylinder for a hydraulic clutch actuation system for motor vehicles A hydraulic cylinder, in particular a master cylinder for a hydraulic clutch actuation system for motor vehicles, has a housing having a cylinder wall, in which a piston is slidably received to seal off the pressure chamber, whereas the pressure chamber in a rest po... | 03/27/2007 |
| 7181911 | Plunger type master cylinder To provide a plunger type master cylinder capable of reducing invalid stroke and preventing residual pressure without impairing durability of a seal ling (70). A piston (91) of the master cylinder has a recess (93) at its outer peripheral surfac... | 02/27/2007 |
| 7178646 | Master cylinder lever for a hydraulic disc brake having a backpack reservoir A master cylinder for a bicycle hydraulic disc brake includes a cylinder wall defining a cylinder interior and a cylinder exterior. A piston is received within the cylinder interior. A reservoir for hydraulic fluid is defined in part by a portion of the cylinder ext... | 02/20/2007 |
| 7168536 | Brake master cylinder comprising plunger pistons and radial grooves inserted into the housing in order to receive sealing joints The present invention relates to a tandem master cylinder including two plunger pistons and its object is to design the cylinder as simple as possible and to render its assembly as economical as possible. This object is achieved by inserting circumferential annular ... | 01/30/2007 |
| 7156183 | Electric hydraulic power unit and method of using same An apparatus includes a housing defining a chamber therein and defining an inlet port and an outlet port and a movable pressure barrier, disposed in the chamber, separating the chamber into first and second portions, the inlet port and the outlet port being in fluid... | 01/02/2007 |
| 7137492 | Apparatus for controlling hydraulic brakes in bicycles, motorbicycles and the like Apparatus for controlling brakes in bicycles and the like, to be used, in particular, for disc brakes mounted on bicycles, with a pump (8) connected with a relevant reservoir (88) for the fluid of the hydraulic circuit, and comprising a piston (89 | 11/21/2006 |
| 7114335 | Apparatus for controlling a hydraulic circuit for clutches Apparatus for controlling a hydraulic circuit to be used for operating hydraulic clutches with a pump (8) connected with a relevant reservoir (88) for the fluid of the hydraulic circuit and comprising a piston (89) sliding within a relevant cham... | 10/03/2006 |
| 7104059 | Master cylinder A master cylinder includes a primary cup received in a groove formed in the inner wall of the cylinder body. Projections are formed on a radially inner portion of the cup so as to protrude forwardly from the front end of the radially inner portion. The projections a... | 09/12/2006 |
| 7059128 | Hydraulic system for a motor vehicle The piston in the master cylinder of a hydraulic system of the kind that is used particularly in motor vehicles is made of a duroplastic polymer material. ... | 06/13/2006 |
| 7055322 | Master cylinder A master cylinder includes a primary piston and a secondary piston, each formed with piston ports which include two different kinds of ports, i.e. first ports for ensuring communication between a reservoir and a pressure chamber of the master cylinder, and second po... | 06/06/2006 |
| 7047868 | Piston and cylinder assembly with push rod retention A piston and cylinder assembly in which the rear end of the piston defines an arcuate concavity opening in the rear face of the piston, a retainer having an arcuate configuration matching the arcuate configuration of the piston concavity is positioned in the concavi... | 05/23/2006 |
| 7040093 | Penetration master cylinder with reduced backlash and application thereof This invention relates to a master cylinder of the so-called “penetration” type, in which a cup (3), which is fitted inside a groove (11) of the master cylinder, bears on the wall (20) of a piston (2) in a sealing manner, and in which... | 05/09/2006 |
| 7032380 | Master cylinder A brake master cylinder includes a cylinder body having a circumferential groove formed therein. A primary cup is received in the groove and supported axially by a rear wall defined by the groove. A primary piston is inserted in the cylinder body in sliding contact ... | 04/25/2006 |
| 7013643 | Master cylinder A master cylinder includes a cylinder body and a piston slidably inserted in the cylinder while kept in slide contact with two cup members both fitted in the inner surface of the cylinder body to seal the gap between the piston and the inner surface of the cylinder ... | 03/21/2006 |
| 7008023 | Hydraulic brake apparatus A hydraulic brake apparatus includes a brake master cylinder having a rod piston moving in response to a brake pedal; a separation valve provided in a hydraulic brake circuit in order to establish and shut off communication between the brake master cylinder and the ... | 03/07/2006 |
| 7003954 | Master cylinder apparatus A master cylinder apparatus for a BBW system is provided, which eliminates a risk of brake delay, even with the use of a plunger-type master cylinder, and which therefore is able to achieve a reduction in size of a master cylinder. The master cylinder apparatus comp... | 02/28/2006 |
| 7003953 | Drive device, particularly for the closing unit, the injection unit or the ejectors of a plastic injection molding machine A drive device for closing unit, injection unit or ejectors of a plastics injection molding machine, has a drive element which is axially moveable, and a hydraulic unit which is moveable by the drive element in the same direction as the drive element. The hydraulic ... | 02/28/2006 |
