Class / Patent application number | Description | Number of patent applications / Date published |
060594000 | Having cam, or lever system driving master | 11 |
20080302101 | Master Cylinder Assembly 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 assembly 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 regions. The first region is in fluid communication with the hydraulic actuation system. A piston is slidably disposed in 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 and a closed fluid circuit position. A first seal is disposed on either the piston or a wall of the fluid cavity. The first seal is configured to be in sealing engagement between the fluid cavity and the piston with the piston in the closed fluid circuit position to block fluid flow between the first and second fluid cavity regions. The first seal is configured to be in non-sealing disengagement between the fluid cavity wall and the piston with the piston in the open fluid circuit position to permit fluid flow between the first and second fluid cavity regions. | 12-11-2008 |
20100043426 | HYDRAULIC BRAKE LEVER ASSEMBLY - A hydraulic brake lever assembly includes a master cylinder, a master piston, and a floating piston. Both of the master piston and the floating piston are sealingly and movably received in the master cylinder. The master piston has a passage diametrically defined therein and extending therethrough for receiving a bias mechanism. The floating piston has a through hole for coaxially and sealingly receiving the master piston. The floating piston has two raceways radially and symmetrically extending from the through hole therein. The bias mechanism is movably disposed between the two raceways. Each raceway has a trough defined in a bottom thereof. The bias mechanism moves along the troughs and the raceways to provide the effort of multi-stage movement and different braking feel. | 02-25-2010 |
20100242469 | BRAKE ACTUATING UNIT - A brake actuating unit for motor vehicles includes a brake master cylinder, a booster stage which is connected in front of the brake master cylinder, and a drive unit for driving the booster stage. In order to make comfortable braking operations possible, there is provision for the transmission both of the actuating force and of the boosting force to the primary piston of the brake master cylinder to take place by a force transmission module which has at least one elastic element and is arranged in the primary piston. | 09-30-2010 |
20120222416 | HYDRAULIC BRAKE ACTUATION DEVICE - A hydraulic brake actuation device is provided that basically includes a housing, a master piston, a push rod, an actuation lever, a contact member and a support member. The housing includes a master cylinder. The master piston is slidably disposed in the master cylinder. The push rod is coupled to the master piston. The actuation lever is pivotally attached to the housing. The contact member contacts the actuation lever. The contact member also contacts the push rod that pushes the master piston. The support member is attached to the housing. The support member is a separate piece from the housing that guides the contact member. | 09-06-2012 |
20140041379 | Master for a hydraulic actuating element - A master for a hydraulic actuating element, with a cylinder, in which a piston is displaceably mounted, and a hand lever, with which the position of the piston in the cylinder can be influenced, and a fastening element which comprises a clamping part shaped complementarily to the inner cross section of the handlebar, which is equipped for being fastened in the handlebar by means of an internal clamping. Furthermore, the invention relates to a master, in which the hand lever and the piston are connected by a push rod, which comprises a first longitudinal portion, which is provided with an external thread, which engages in an internal thread on the hand lever, so that the distance between piston and hand lever can be adjusted by turning the push rod, and wherein the push rod comprises a second longitudinal portion, which is provided with a polygonal outer cross section, which bears against at least one second spring element. Finally, the invention relates to a master, in which the piston made of a plastic material seals off the cylinder to the outside with a wiping lip, which is unitarily joined to the piston. | 02-13-2014 |
20140109567 | Hydraulic Converter and Hydraulic Brake - A hydraulic converter for a hydraulic brake system or clutch system, in particular, of a handlebar-steered vehicle, in particular of a bicycle, includes at least one hydraulic master device and a mechanical slave device for actuating the hydraulic master device. The hydraulic master device comprises a cylinder with a pressure chamber, a piston arranged in the cylinder displaceably along the axis of the cylinder, and the hydraulic converter having an adjustment device for adjusting the volume of the pressure chamber of the cylinder. | 04-24-2014 |
20140238015 | Apparatus and System Comprising Integrated Master-Slave Pistons for Actuating Engine Valves - An apparatus for actuating first and second engine valves comprises a rocker arm that receives motion from primary and auxiliary valve actuation motion sources at a motion receiving end of the rocker arm. A master piston residing in a master piston bore in the rocker arm is configured to received motion from the auxiliary valve actuation motion source. A slave piston residing in a slave piston bore in the rocker arm is configured to provide auxiliary valve actuation motion to the first engine valve. A hydraulic circuit is provided in the rocker arm connecting the master piston bore and the slave piston bore, and a check valve is disposed within the rocker arm, configured to supply hydraulic fluid to the hydraulic circuit. The apparatus may be incorporated into a system comprising a rocker arm shaft and the primary and secondary valve actuation motion sources, such as an internal combustion engine. | 08-28-2014 |
20150375727 | Pressure Generator for a Hydraulic Vehicle Brake System - A pressure generator for a hydraulic vehicle brake system includes a piston cylinder unit with a cylinder and a piston, a ball screw drive, an electric hollow-shaft motor which surrounds and is configured to drive the ball screw drive, and a planetary gear set configured to transmit a rotational movement of the hollow-shaft motor to the ball screw drive. The planetary gear set includes a planetary carrier and an internal gear which are respectfully connected via pint-type positive locking connections to a spindle nut of the ball screw drive and a static tubular force transmitter. The locking connections are configured to enable connections between parts via the respective parts being brought together axially in a hollow shaft of the hollow-shaft motor. | 12-31-2015 |
20160031422 | VEHICLE BRAKE DEVICE - The vehicle brake device has the invalid depression region in a brake pedal operation by a driver. The vehicle brake device includes an input rod configured to move forward and rearward in conjunction with a depression operation of a brake pedal and a pedal bias unit configured to bias the input rod in a direction to which the brake pedal returns when the depression operation position of the brake pedal lies within the invalid depression region. The pedal bias unit includes an elastic body including one end portion attached to the input rod and the other end portion attached to the vehicle body side member to provide a spring force to the input rod in the direction to which the brake pedal returns. | 02-04-2016 |
20160200390 | Hydraulic Dual Control Device for Bicycle | 07-14-2016 |
20160252145 | DEVICE FOR HYDRAULIC CONTROL OF A CLUTCH AND ASSOCIATED VEHICLE | 09-01-2016 |