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| Number | Title | Issue Date |
| 7318313 | Switch A switch in particular for a master cylinder unit, for opening and/or closing an electrical circuit, for example, for switching on the brake lights, comprises a casing suitable for being housed in a compartment of the cylinder body, a first electrical contact fixed ... | 01/15/2008 |
| 7246636 | Hydraulic fluid reservoir and hydraulic system A hydraulic fluid reservoir and hydraulic pump combination has at least one hydraulic fluid port and includes a container with a hollow body having a top and a conduit having a bottom within the container and a top above the bottom. The conduit has an opening adjace... | 07/24/2007 |
| 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 |
| 6935110 | Tandem master cylinders for hydraulic systems A tandem master cylinder in which fluid under pressure is supplied to a primary outlet port from a primary pressure space in a bore between a positively actuated main piston and a floating or secondary piston, and to a secondary outlet port from a secondary pressure... | 08/30/2005 |
| 6672841 | Pumping and metering device The present invention relates to a pumping device for delivering and metering fluids, in particular medical fluids such as dialysis fluids, with a piston unit having a driving device and a piston and with a membrane unit which has a membrane and a first c... | 01/06/2004 |
| 6098405 | Drive unit for medical equipment A tube-line pressure sensor of a medical-appliance driving apparatus detects the interior pressure of a tube line. If the pressure detected by a tube-line pressure sensor is equal to or less than a predetermined value, a first solenoid valve is closed, wh... | 08/08/2000 |
| 5878572 | Proportioning device for a brake system A brake system (10) having a proportioning device (18) through which a first fluid pressure is communicated to a first brake circuit and a second fluid pressure is communicated to a second brake circuit. The proportioning device (18) has a housing (90) wi... | 03/09/1999 |
| 5359854 | Actuating unit for hydraulic brake system An actuating unit for a hydraulic brake system for automotive vehicles which operates by a precisely defined change-over pressure and with lost travel independent of the speed of actuation. The actuating unit includes a pneumatic brake power booster and a... | 11/01/1994 |
| 5201573 | Hydraulic dual-circuit brake system A hydraulic dual-circuit brake system has brake booster with a first output pressure chamber allocated to the front-axle brake circuit I and a second output pressure chamber allocated to the rear-axle brake circuit II. The chambers are movably delimited b... | 04/13/1993 |
| 5184468 | Brake power booster and master cylinder assembly with return spring plate A vacuum brake power booster is presented in which the vacuum control valve (81) is arranged parallel to the master cylinder (55). The housing (92) of the booster is used as a carrier element for actuating members, such as the brake pedal (60, 8) and the ... | 02/09/1993 |
| 5066940 | Brake pedal travel warning system A brake pedal travel warning system for use in an automotive vehicle includes a brake pedal and a master cylinder associated with the brake pedal through a connecting link. The master cylinder includes a fluid reservoir containing brake fluid and a housin... | 11/19/1991 |
| 5046313 | Master cylinder with fluid level and pressure failure detection A master cylinder (12) having a switch (70) which is activated by either a magnet (78) carried by a float (76) in a reservoir (40) or a pin (66) moved by a differential area piston (52). The switch (70) had a first blade (82) connected a source of electri... | 09/10/1991 |
| 5016442 | Master cylinder with fluid level and pressure failure detector A master cylinder having a housing with a first bore therein for retaining a pair of pistons which move in response to an input force and develop fluid pressure to effect a brake application. A second bore in the housing carries a differential area piston... | 05/21/1991 |
| 4919496 | Process of monitoring and controlling an anti-locking automotive brake system for carrying out the said process A process and apparatus for monitoring and controlling an anti-locking automotive brake system comprising a tandem master cylinder and an auxiliary pressure source, from which, in the event of anti-lock regulation, pressure fluid is supplied to the workin... | 04/24/1990 |
| 4914916 | Tandem master cylinder with electromagnetic position sensors for each piston A brake failure warning system for a dual hydraulic master cylinder for use with a motor vehicle. The warning system employs a pair of Hall Effect magnetic sensors which are positioned on the exterior of a plastic cylinder in association with the two pist... | 04/10/1990 |
| 4805668 | Brake fluid container In a brake fluid container for hydraulic motor vehicle brake systems having a housing with a fill connector a container cap closing off the fill connector, a filling filter suspended in the fill connector and protruding into the housing interior, and a le... | 02/21/1989 |
| 4776643 | Method for feedback of malfunctions in brake systems, and brake system operating by this method A brake system which has a brake booster, a brake pedal which acts via a travel simulator device upon the brake booster, at least one anti-skid valve, two sensors (Sp, SI) and a pulse emitter. One of the sensors measures braking pres... | 10/11/1988 |
| 4753487 | Failure switch for braking system proportioning valve The invention is a hydraulic failure compensating switch which incorporates a differential pressure valve which responds to a hydraulic failure in one of a pair of vehicle braking circuits and altering the pressure reducing function of the braking system ... | 06/28/1988 |
| 4741160 | Hydraulic multiple-circuit brake system A hydraulic multiple-circuit brake system is proposed, the brake amplifier of which has a multiple-chambered refill container. With an intake connection of its pump, an energy supply apparatus comprising a pump and a reservoir is connected at a predetermi... | 05/03/1988 |
| 4691519 | Master cylinder A master cylinder assembly of the type that a current quantity of operating fluid in the interior of a reservoir is detected by function of a float means, wherein the float means has an extension extending with its center of buoyancy disposed near the cen... | 09/08/1987 |
| 4682824 | Braking pressure generator for slip-controlled brake systems of automotive vehicles A braking pressure generator for slip-controlled brake systems of automotive vehicles comprises dynamic (III) and static (I, II) pressure fluid circuits into which pressure fluid from the dynamic circuit (III) is metered during braking with slip control. ... | 07/28/1987 |
| 4630443 | Reservoir for a master cylinder A reservoir (20) for a master cylinder (16) has a body (22) with an end member (82) attached thereto by tangs (92, 92' . . . 92N) that engage a surface (69) on a flange (70). A shoulder (86) concentric to peripheral lip (84) on the end member (... | 12/23/1986 |
| 4615175 | Hydraulic reservoir in tandem master cylinder A hydraulic reservoir in a tandem master cylinder includes a main portion defining a fluid reservoir chamber for reserving brake fluid, two fluid supply portions defining fluid paths under the main portion, the fluid supply portions being contiguous with ... | 10/07/1986 |
| 4604866 | Master cylinder A master cylinder includes a housing movably supporting a pair of pistons and carrying a fluid reservoir assembly. The fluid reservoir assembly carries a differential area piston and a float which cooperate to activate a single reed switch, thereby genera... | 08/12/1986 |
| 4542624 | Diaphragm assembly A diaphragm assembly is designed to follow a drop in the level of a working fluid filled in a reservoir used with a master cylinder for the purpose of cutting off the communication between the working fluid and the outside air. The diaphragm includes a pa... | 09/24/1985 |
| 4516400 | Master cylinder assembly for a vehicle braking system In a dual master cylinder assembly comprising two independently and simultaneously operable master cylinders, primary pressure spaces between primary and secondary pistons are interconnected by a pipe-line, and secondary spaces between the secondary pisto... | 05/14/1985 |
| 4505113 | Plastic compensating reservoir for hydraulic brake systems A plastic compensating reservoir for hydraulic brake systems, such as for brake systems of automotive vehicles, is provided with two interconnected brake fluid chambers which are in communication each other over one port for connection to each one pressur... | 03/19/1985 |
| 4500761 | Fluid reservoir with fluid-level sensor A fluid reservoir with a fluid-level sensor includes a manual testing device consisting of two separate but cooperative rods. The fluid-level sensor consists of a float within the reservoir and a reed switch which is closed to cause a low fluid-level alar... | 02/19/1985 |
| 4489224 | Fluid level indicator A fluid level indicator is provided for a master cylinder to generate a signal in response to the fluid level reaching a predetermined level. The fluid level indicator includes a carrier assembly for holding a magnet and moving the same within a master cy... | 12/18/1984 |
| 4488404 | Hydraulic fluid reservoir for automobile A hydraulic fluid reservoir for automobile including a plurality of fluid chambers separated by a partition, the fluid chambers being communicated with hydraulic systems in the automobile respectively, and a baffle plate between the upper end of the parti... | 12/18/1984 |
| 4414810 | Fluid reservoir for a hydraulic brake system A fluid reservoir for use with a tandem master cylinder is divided into two compartments by a partition wall with one of the two compartments being directly connected to a first outlet port connected to the master cylinder and the other of the two compart... | 11/15/1983 |
| 4385495 | Fluid reservoir for tandem master cylinder A fluid reservoir for a tandem master cylinder. The fluid reservoir is of a type having therein, as one unit body, two chambers each for supplying hydraulic fluid to each of two pistons of the tandem master cylinder. These two chambers are separated into ... | 05/31/1983 |
| 4337792 | Fluid reservoir for brake master cylinders In a fluid reservoir for a brake master cylinder, a cap member of elastic material is coupled over the upper opening of a casing, and a diaphragm seal member is coupled within the cap member to subdivide the interior space of the casing into upper and low... | 07/06/1982 |
| 4301653 | Tandem master cylinder The tandem master cylinder is provided with an equalizer device comprising a plunger mounted intermediate two chambers which are respectively connected to the two cavities of the master cylinder. At least one of the ducts connecting the master cylinder an... | 11/24/1981 |
| 4291613 | Monitor for double safety valves An improved electro-pneumatic monitor for double safety valves controlled by solenoid-operated pilot valves. The monitor comprises a relatively short spool centrally held by oppositely disposed captive springs. The sensing passages are provided with relat... | 09/29/1981 |
| 4289162 | Fluid reservoir for brake master cylinder In a fluid reservoir for a brake master cylinder, a cap is coupled over the upper opening of a reservoir casing, and an extendable diaphragm seal member is coupled in a fluid-tight manner within the casing to subdivide the interior space of the casing int... | 09/15/1981 |
| 4243856 | Piston-type hydropneumatic accumulator equipped with a gas shortage detection device In the gas shortage detection device of a piston-type hydropneumatic accumulator, a control rod slidably mounted in the cylinder head on the gas side is displaced under the action of the thrust exerted by the piston when this latter comes closer to the cy... | 01/06/1981 |
| 4232518 | Sealed type fluid reservoir A sealed type fluid reservoir in which a valve member is incorporated in a main cap which is coupled with an upper end of a casing. The pressure in the interior of the casing is maintained at atmospheric level by the valve member despite pressure variatio... | 11/11/1980 |
| 4198824 | Sealed fluid reservoir for brake master cylinders A resilient seal cap is coupled over an upper opening of a reservoir casing to define an interior air space with the upper surface of brake fluid in the casing. The seal cap is formed integral with a first annular lip co-operating with the inner wall of t... | 04/22/1980 |
| 4168613 | Oil reservoir device with oil level detector means for a tandem type master cylinder A device comprising two oil reservoir tanks communicating with the two respective oil-hydraulic chambers of a tandem type master cylinder and also with each other through an upper and a lower interconnecting oil passage. One of the two tanks has a top ope... | 09/25/1979 |
