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| Number | Title | Issue Date |
| 7533528 | Actuator assembly An actuator assembly (1) comprises a body (2) in which works an actuating piston (7), a first piston (5) and at least one second piston (6), a chamber (26) containing a substantially incompressible fluid by which each of the... | 05/19/2009 |
| 7351053 | Drive unit A drive unit, in particular for a closing unit, an injection unit, or an ejector of an injection molding machine, may be used where a high axial force is applied through a hydraulic power converter. A cylinder of the power converter may be fixed relative to a frame ... | 04/01/2008 |
| 7194859 | Intensifier An intensifier is operable to supply force and includes a housing defining a cavity. A ram is slidably positioned within the cavity and partially extends from the housing. The intensifier also includes a force transfer rod and a plurality of power pistons. The ram i... | 03/27/2007 |
| 7146812 | Hydraulic brake apparatus A hydraulic brake apparatus includes a tandem brake master cylinder having a rod piston moving in response to a brake pedal, and a floating piston moving in response to the rod piston; a separation valve provided in a hydraulic brake circuit connecting the brake mas... | 12/12/2006 |
| 7107766 | Hydraulic pressurization system The present invention relates to a hydraulic pressurization system, in particular for application to pressurization devices operating in accordance with the high hydrostatic pressure principle. In particular, the present invention provides a pressurization system fo... | 09/19/2006 |
| 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 |
| 6935111 | Drive device, in particular for the locking unit, the injection unit or the ejector of an injection-moulding machine for plastics A drive device which is used in particular for the closing unit, the injection unit or the ejectors of an injection molding machine for plastics and which has a drive element which can be moved axially by an electric motor, and a hydraulic unit which can be moved in... | 08/30/2005 |
| 6735944 | Air to oil intensifier A pressure intensifier for generating relatively large output force includes a piston driven in an advancing and a retracting direction. The piston provides a relatively large cross-sectional area for a pressurized fluid to act during the retracting stroke. As such,... | 05/18/2004 |
| 6705082 | Hydraulic pressure booster cylinder Disclosed is a hydraulic pressure booster cylinder. In a low pressure stroke, in a state wherein a slide piston is positioned close to a third piston, as compressed air is supplied into a second pneumatic chamber, a second piston is moved toward a bore, and thereby ... | 03/16/2004 |
| 6615583 | Pressurizing apparatus A pressurizing apparatus includes a fixed portion, an input shaft acting directly in an axial direction with respect to the fixed portion, an output shaft extending coaxially with the input shaft to slide with respect to the fixed portion and the input sh... | 09/09/2003 |
| 6382367 | Actuating piston for a hydraulically and mechanically actuable, spot type disc brake An actuating piston (10) of a hydraulically and mechanically actuable, spot-type disk brake for motor vehicles, which is disposed in a sealing and displaceable manner in a cylinder bore of the disk brake is provided with an axial-force-transmitting conica... | 05/07/2002 |
| 5918464 | Pressurized in-line master cylinder A manually operated in-line secondary master cylinder can be configured for use with any hydraulic system which accommodates multiple manual input forces, and which requires the secondary input device to operate independently of the primary input device. ... | 07/06/1999 |
| 5836161 | Hydraulic pressure booster A hydro-pneumatic pressure booster is proposed in which the reservoir chamber is limited by an elastic partition wall instead of a sliding piston.... | 11/17/1998 |
| 5526644 | Oil intensifier cylinder An oil intensifier cylinder having a hollow cylindrical body. An intensifier piston is slideably positioned in the body. An intensifier rod is connected to and extends from the intensifier piston. An outer reservoir piston is slideably positioned in the b... | 06/18/1996 |
| 5381661 | Hydraulic pressure transformer The invention relates to a hydraulic pressure transformer, wherein a storage chamber and a work chamber are connected with each other via an overflow bore into which a plunger piston dips to generate a pressure stage and thereby separates the two chambers... | 01/17/1995 |
| 5345766 | Arrangement for carrying out a two-stage linear movement An arrangement for carrying out a two-stage linear movement with a stationary and a movable constructional unit, comprises a hydraulic cylinder and an hydraulic piston preferably in the form of a plunger. The hydraulic piston has a hollow volume which hou... | 09/13/1994 |
| 5247871 | Combined pneumatic-hydraulic press head with high actuation speed The combined pneumatic-hydraulic press head includes a body inside which a substantially cylindrical main chamber is defined; the chamber accommodates a main piston and a secondary piston so that they can slide along an axial direction. The main piston ha... | 09/28/1993 |
| 5247870 | Combined pneumatic-hydraulic press with controlled stroke The combined pneumatic-hydraulic press with controlled stroke, includes a body inside which a substantially cylindrical main chamber is defined; the main chamber accommodates, so that it can slide along an axial direction, a working piston which protrudes... | 09/28/1993 |
| 5193345 | Distributor of a fluid under pressure The distributor is used for supplying a fluid coming from a source of fluid under pressure and under a pressure which is a function of the pressure of a control fluid. The distributor comprises, in a bore (3) made in a body (1), a double valve consisting,... | 03/16/1993 |
| 5103644 | Bifluidically controlled fluid distributor A bifluidically controlled distributor of a fluid coming from a first source (11) of fluid under high presure, comprises, in a blind bore (1) made in a body, a sliding piston (3) defining, with a plug of the bore, a first control chamber (5) connected to ... | 04/14/1992 |
| 5061016 | Brake fluid pressure control apparatus Disclosed is a brake fluid pressure control apparatus in which an anti-lock control mechanism is connected to a hydraulic booster. A large-diameter piston is combined with a small-diameter piston so that the pressurization effected by the master cylinder ... | 10/29/1991 |
| 4904026 | Brake system A brake system having a master brake cylinder with at least one piston in a stepped bore in which the piston is acted upon at one end by a piston rod and on the other end defines a pressure chamber, from which an outlet or a brake line leads to wheel brak... | 02/27/1990 |
| 4887870 | Feed pump for brake systems A feed pump, preferably for anti-skid brake systems, having at least one shaft-driven pump piston and at least one compensation element. Some of the brake fluid fed by the pump piston into the brake system during the compression stroke is received in a co... | 12/19/1989 |
| 4887872 | Track adjuster flow control mechanism A track adjusting flow controlling mechanism sets the optimum tension or "controlled sag" in the endless track of a track type vehicle. A piston and associated valve assembly control flow of pressurized fluid to a track adjusting clyinder. Movement of the... | 12/19/1989 |
| 4874207 | Hydraulic braking system for an automotive vehicle A hydraulic braking system for an automotive vehicle having a power source for generating a hydraulic power pressure, a reservoir, a master cylinder, a regulator and a plurality of wheel brake cylinders for braking respective road wheels, which are divide... | 10/17/1989 |
| 4858737 | Hydraulic braking device for automobile vehicle The device comprises a tandem master cylinder, a booster high pressure fluid distributor, 2, a valve mechanism 4 to interconnect the master cylinder and the distributor selectively to a braking circuit. The high pressure circuit is connected to the pipeli... | 08/22/1989 |
| 4824181 | Pressure activated isolation valve An iosolation valve usable with an adaptive braking/traction control system comprising a plurality of passages adapted to communicate to a variety of pressure sources and an outlet port adapted to communicate to at least one brake cylinder. A valve movabl... | 04/25/1989 |
| 4817767 | Hydraulic brake system for automotive vehicles A hydraulic brake system for automotive vehicles with a master brake cylinder (1) connected to an unpressurized reservoir and with a brake line (13, 14) connected to a working chamber (4, 5) of the master brake cylinder and leading to pressure control val... | 04/04/1989 |
| 4812777 | Manually/electrically operated brake system A manually/electrically operated brake system for applying a brake to a wheel of a vehicle, including a master cylinder operated by a brake operating member, to generate a manually controlled braking pressure according to an operation of the brake operati... | 03/14/1989 |
| 4793660 | Hydraulic brake system for automotive vehicles A hydraulic brake system for automotive vehicles has a master brake cylinder connected to an unpressurized reservoir and a brake line connected to a working chamber of the master brake cylinder and leading to pressure control valves of a brake slip contro... | 12/27/1988 |
| 4787206 | Hydraulic pressure transducer Hydraulic pressure transducer having an operating cylinder (10) with an operating piston (12) and operating piston rod (14) adapted for rapid traverse, and a transducer piston (22) and piston rod (24) guided within an axially connected power cylinder (20)... | 11/29/1988 |
| 4754604 | Hydraulic brake booster with tubular conduit return spring A hydraulic booster in which the booster piston return spring is formed as a tubular conduit to conduct hydraulic supply pressure to a closed center valve. Upon actuation, the valve opens to permit supply pressure to flow into the power chamber and by val... | 07/05/1988 |
| 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 |
| 4738109 | Two stage brake control valve A two stage brake valve for communicating fluid pressure to a brake assembly. The valve has a stepped cylinder formed therein in which a high volume piston and high pressure valve are slidably located. The piston and valve define high volume and high pres... | 04/19/1988 |
| 4706460 | Hydraulic brake valve capable of operating as conventional master cylinder when brake pressure source fails Hydraulic assistance device, incorporating a casing (10) provided with a bore (12) in which first piston means (16, 18) is slideably mounted, the piston (16, 18) being able to move under the effect of the actuation of a brake pedal between a first positio... | 11/17/1987 |
| 4679397 | Hydraulic power brake apparatus The hydraulic power braking apparatus comprises a fluid power apparatus (10) receiving fluid pressure from a power steering apparatus of the vehicle, the fluid power apparatus (10) connected at one end to the brake pedal of the vehicle and at the other en... | 07/14/1987 |
| 4651528 | Hydraulic amplifier for braking system The invention concerns a hydraulic amplifier for a braking system incorporating a body (10, 110), a first component (18, 124) capable of being displaced in the body (10, 110) under the effect of the operation of a brake pedal, between a first position cau... | 03/24/1987 |
| 4642989 | Hydraulic power booster The present invention relates to a hydraulic power booster, in particular for the actuation of a master cylinder in an automotive vehicle brake system, wherein there is a booster piston and a brake valve arranged essentially in parallel to the booster pis... | 02/17/1987 |
| 4641497 | Device for generating braking pressure for a braking installation with twin circuits The device incorporates an actuating piston (6) in tandem with a master cylinder piston (7) both defining first (8) and second (9) braking pressure chambers. A valve mechanism (34), in line with the control valve mechanism (12) of the device, is controlle... | 02/10/1987 |
| 4625516 | Brake booster A brake booster includes a housing with at least three bores to movably carry a pair of pistons and a valve assembly. A diaphragm is exposed to a fluid pressure differential to pull the pair of pistons and the valve assembly to a brake applied position wh... | 12/02/1986 |
