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| Number | Title | Issue Date |
| 7188710 | Hydraulic brake actuator comprising electrically actuable lock for park brake In an automotive vehicle braking system, a hydraulic brake actuator includes a wedge for locking a hydraulic piston in a brake position for purposes of applying a park brake. To apply the park brake, hydraulic pressure is increased to advance the piston to urge the ... | 03/13/2007 |
| 7188912 | Braking systems A braking system includes a brake actuator which is moveable in a first direction to cause a brake applying member to apply a braking force to a member to be braked. A master valve includes a piston assembly which upon operation of a brake operating member, directs ... | 03/13/2007 |
| 7182185 | Disk brake comprising an adjuster module The invention relates to a disk brake, in particular for utility vehicles, comprising a brake caliper, which extends over a brake disk, an application device located in the brake caliper for applying the brake pads on both sides of the brake disk in the direction of... | 02/27/2007 |
| 7143874 | Surge brake actuator A surge brake actuator is disclosed. The actuator includes an actuator housing and a coupler housing movably engaged within the actuator housing. Upper and lower coupler slide channels formed from a plastic material are releasably connected to the coupler housing an... | 12/05/2006 |
| 7134532 | Disk brake The invention relates to a disk brake, in particular for utility vehicles, comprising a brake caliper, which extends over a brake disk, an application device located in the brake caliper for applying brake pads on both sides of the brake disk in the direction of the... | 11/14/2006 |
| 7066305 | Brake bands for an automatic transmission and method for controlling a gear shift in automatic transmission and feedback loop control system A brake band shifting mechanism for an automatic transmission. The brake band shifting mechanism includes a brake band encircling a brake drum of the transmission. A first end of the brake band is mounted to a secured portion of the transmission by a first linkage a... | 06/27/2006 |
| 6848546 | Surge brake actuator A surge brake actuator is disclosed. The actuator includes an actuator housing and a coupler housing movably engaged within the actuator housing. Upper and lower coupler slide channels formed from a plastic material are releasably connected to the coupler housing an... | 02/01/2005 |
| 6220402 | Hydraulic servo apparatus for automatic transmission A hydraulic servo includes a cylinder, a piston and a rod. The piston divides the interior space of the cylinder between a closed hydraulic chamber and a back chamber which has an opening to the interior space of an automatic transmission. The rod is slid... | 04/24/2001 |
| 5881858 | Hydraulic servo-mechanism for an automatic transmission A hydraulic servo-mechanism for an automatic transmission, including a hydraulic servo for applying a band brake to engage a band to a drum. The hydraulic servo includes a rod which is selectively positionable to an apply position for applying the band br... | 03/16/1999 |
| 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 |
| 4802559 | Hydropneumatic brake actuator arranged to maintain a constant brake shoe clearance A hydraulic power unit for a hydropneumatic brake actuator having a power piston comprising a force piston formed with a bore therein and a take-up piston operative in the force piston bore for movement relative thereto during a brake application. This re... | 02/07/1989 |
| 4753136 | Hydraulic control of transmission A fluid pressure actuator for a frictionally engaged unit of a vehicular transmission includes a first transmission and a second transmission coupled to the output side of the first transmission and provided with a speed step change mechanism which has a ... | 06/28/1988 |
| 4746174 | Method and brake system for traction slip control For traction slip control, the wheel brakes (13, 14) of the driven wheels (VR, VL) are connected to the auxiliary-pressure source (5, 6) of the brake system by electromagnetically actuatable multidirectional control valves (E11, E12). In an initial phase ... | 05/24/1988 |
| 4653272 | Fluid actuation device with compensation for wear Fluid actuation device with compensation for wear, particularly for friction clutch mechanisms of the type having a cylinder in which there are placed a first piston resting on a spring and a second piston extended by a declutching control rod, and in whi... | 03/31/1987 |
| 4641891 | Hydraulic servo vehicle brake A hydraulic servo vehicle brake with a tandem master cylinder wherein the first master piston (24) is provided with a cylindrical axial bore toward the piston pressure chamber (76). A second master piston (80) extending to the master cylinder bottom (79) ... | 02/10/1987 |
| 4496033 | Dual piston actuator A pair of axially aligned and nested pistons are mounted in a pressure sealed arrangement within the bore of a pressure housing. A primary piston is moved in response to increasing pressure to provide an actuating output force while a secondary piston sim... | 01/29/1985 |
| 4467605 | Hydro-pneumatic actuator with automatic slack adjuster A two-stage, hydro-pneumatic actuator suitable for use as a railway vehicle brake. The hydraulic cylinder comprises a large diameter bore in which a low- and a high-pressure piston operate jointly during a first stage of operation to effect a high volumet... | 08/28/1984 |
| 4428462 | Low displacement disc brake caliper assemblies A small take-up piston moves outward during the first increment of hydraulic pressure, taking up the clearance with low fluid displacement because of small size of this piston. As a predetermined pressure level is reached, the take-up and power pistons ar... | 01/31/1984 |
| 4404803 | Brake unit with a hydraulic boosting device A brake unit comprising a hydraulic booster unit connected to hydraulic auxiliary energy and controllable by a brake pedal via a control piston drives a master brake cylinder unit to supply brake pressure to wheel brake cylinders through at least one hydr... | 09/20/1983 |
| 4225022 | Brake booster A brake booster includes a booster piston adapted to be acted upon by the pressure fluid metered through a valve device and displacing a master cylinder piston. A pressure chamber is formed between the booster piston and the master cylinder piston. An add... | 09/30/1980 |
| 4093184 | Hydraulic brake system for crane hoist drum A hydraulic brake system for the hoist drum of a lifting crane to achieve good control over loads being held or lowered by the load line wrapped on the hoist drum comprises a brake band for exerting a braking force on the hoist drum. The system further co... | 06/06/1978 |
| 3981148 | Combined fluid motor and pumping apparatus A combined fluid motor and pumping apparatus including a unitary multi-land piston device having a motor piston end slidably mounted in a motor portion of an elongated tubular housing and an opposite pump piston end slidably mounted in an opposite pumping... | 09/21/1976 |
| 3958423 | Hydraulic brake booster In a hydraulic brake booster, wherein a body, to which is coupled a master cylinder, is provided with a projecting portion extending outwardly towards the master cylinder; a power piston adapted to operate the piston of the master cylinder extends through... | 05/25/1976 |
