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| Number | Title | Issue Date |
| 7052094 | Vehicle brake system A vehicle brake system includes a master cylinder having a housing defining a bore therein. A boost piston and a primary piston are slidably disposed in the bore. The master cylinder has a boost chamber defined at least in part by the boost piston and the housing. T... | 05/30/2006 |
| 6993907 | Automotive hydraulic braking system and a hydraulic brake intensifying apparatus for use therein The subject invention provides an improved hydraulic braking system and a hydraulic pressure intensifying apparatus (10) for use in the braking system. The braking system includes a master cylinder assembly (26, 126), with the intensifying apparatus ( | 02/07/2006 |
| 6550245 | Hydraulic brake apparatus for a vehicle A vehicle hydraulic brake apparatus includes a brake member, a master cylinder generating brake hydraulic pressure, and a master piston movable in response to operation of the brake member. A closed chamber is defined by the master piston and a power pist... | 04/22/2003 |
| 5878577 | Pneumatic brake servo with an improved valve The brake booster has an envelope (10) with an axis of symmetry (X-X') separated sealingly by at least one movable partition (12) to define at least a first chamber (14) connected permanently to a source of low pressure and at least a second chamber (16).... | 03/09/1999 |
| 5857335 | Hydraulic impulse rotational motor A hydraulic pressure amplifier, coupled to a turbine, for creating a fluid impulse directed to a blade of the turbine causing it to rotate. The hydraulic pressure amplifier is comprised of a series of connected sections with each section having a large cy... | 01/12/1999 |
| 5320047 | Desk having self-releveling height adjustment and hydraulic circuit therefor A self-releveling, height adjustable, hydraulically operated desk and a hydraulic circuit therefor are disclosed in which the desk top is supported for vertical movement upon master and slave rephasing cylinders connected in series. The desk top may be re... | 06/14/1994 |
| 5111659 | Device for adapting the characteristic curve of a hydraulic accumulator to the characteristic curve of a consumer In order to avoid energy losses, particularly in the case of actuating operations characterized by energetic cycles, it is suggested to insert a double-lever cam-and-roller transmission mechanism between a hydraulic accumulator and a hydraulic pressure co... | 05/12/1992 |
| 5083432 | Tandem master cylinder with a third piston and chamber A hydraulic braking system includes the third piston slidably disposed between the first piston and the second piston of the tandem master cylinder so as to define the third pressure chamber between the third piston and second piston. The third pressure c... | 01/28/1992 |
| 5072588 | Motion multiplier for use with extendable boom fork lift vehicle This invention relates to a motion multiplier for use with an extendible boom forklift vehicle wherein a light-duty fork carriage is linked to the motion multiplier attached to a heavy-duty fork carriage to allow motion of the light-duty forks to translat... | 12/17/1991 |
| 4961318 | Assisted hydraulic braking system and booster and control valve designed for such a system The invention relates to an assisted hydraulic braking system comprising a brake pedal (10) connected to an actuating rod (46), a pneumatic brake booster (14) comprising a front vacuum chamber (102) and a rear working chamber (104) separated by a movable ... | 10/09/1990 |
| 4922719 | Fluidic transformer with sealed cylinder and check valves in pistons An improved fluid transformer which is capable of controlling the position of the operating pistons within the apparatus so that pressure equilibrium is maintained and the movements of the pistons are limited to predetermined locations within the cylinder... | 05/08/1990 |
| 4865398 | Actuator for wheel anti-lock system An actuator for a wheel anti-lock system, which comprises a first conduit connected to a brake master cylinder and a second conduit connected to a brake wheel cylinder. To the second conduit, there is connected a reservoir for reserving a predetermined am... | 09/12/1989 |
| 4825655 | Master/slave hydraulic system with rebound compensation A master/slave hydraulic system (10) comprises a master cylinder (12), slave cylinders (14-22), and a rebound compensator (72) for eliminating the effects of expansibility in the system on the lower stroke of the cylinders so that accurate depth control a... | 05/02/1989 |
| 4821518 | Clutch booster with overcenter means A booster device for reducing the pedal force required to release the clutch on automotive vehicles. It is capable of either replacing the conventional clutch master cylinder (FIG. 4) or acting as an additional slave and master cylinder (FIGS. 1 to 3). An... | 04/18/1989 |
| 4798052 | Constant-clearance brake piston system with braking pressure intensifier The hydraulic brake adjuster (10) intensifying and piston assembly (30) include an exterior pressure device (11) which is disposed separate from a piston (32). The exterior pressure device (11) includes a differential area piston (12) receiving actuation ... | 01/17/1989 |
| 4754605 | Hydraulic brake system A hydraulic brake system comprising a pedal-operated brake booster (5), which is connected with the master cylinder (3) and includes an auxiliary pressure supply system (13), a booster piston (4), and a booster chamber (7) wherein an auxiliary pressure is... | 07/05/1988 |
| 4693521 | Automobile braking force control apparatus An automobile braking force control apparatus controls braking forces on some or all of the wheels individually or in groups. The operating force from a brake pedal (2) is converted into a hydraulic pressure by a master cylinder (3). This converted hydrau... | 09/15/1987 |
| 4681021 | Driving apparatus A driving apparatus for producing a to-and-fro movement and having four plunger cylinders and four external non-return valves. Such driving apparatus is distinguished by a particularly simple construction.... | 07/21/1987 |
| 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 |
| 4631924 | Dual-circuit master cylinder having auxiliary piston and yoke with equalization chambers for hydraulic equalization A dual-circuit master cylinder having hydraulic equalization is disclosed including a casing having two parallel bores and elongated pistons defining two power chambers in the casing connected to wheel brakes, a yoke including two blind bores receiving ex... | 12/30/1986 |
| 4567727 | Proportioned hydraulic system A hydraulic system is disclosed which provides automatic proportional actuation of pairs of hydraulic cylinders. The proportioning mechanism comprises one or more standard hydraulic cylinders.... | 02/04/1986 |
| 4505116 | Dual-circuit brake control arrangement A master cylinder device for controlling the pressure of hydraulic braking fluid in two separate braking circuits of a hydraulic braking system includes a housing having two parallel and co-extensive pressure chambers each movably accommodating one master... | 03/19/1985 |
| 4505115 | Fluidic transformer apparatus with feedback An applied pressure or volume change is intrinsically transformed into an output pressure or volume change which is related to the magnitude of the relative input quantity and a ratio of effective areas of pressure application surfaces of a plurality of p... | 03/19/1985 |
| 4455921 | Piston-type concrete pump A concrete pump comprises a pair of separate pump assemblies each having a cylinder, a piston subdividing same into a piston-side front compartment and a rod-side rear compartment, and a piston rod connected to the respective piston and extending out of t... | 06/26/1984 |
| 4438629 | Apparatus for simultaneously adjusting fluid pressures in a dual fluid system and associated method A method and apparatus for simultaneously adjusting the fluid pressures in a dual hydraulic circuit arrangement in which in a first hydraulic circuit pressurized fluid is supplied from a first pressure source to a first fluid pressure activated device and... | 03/27/1984 |
| 4423664 | Depth control apparatus A remotely controllable adjustable-stroke fluid cylinder system is described in various embodiments. The system includes a floating stop piston (48) and a main piston (24,224) which is controlled by a valving system (70) and which has visual indicator mea... | 01/03/1984 |
| 4419862 | Hydraulic master cylinders A master cylinder for a hydraulic brake system includes a piston which divides a primary bore into a primary chamber and a secondary chamber. The piston rod sealingly slides in a secondary bore of smaller cross-sectional area than the primary bore. An exp... | 12/13/1983 |
| 4382364 | Hydraulic braking systems for vehicles In a power braking system for a vehicle a supply of fluid from a power source is utilized to augment the output pressure to be supplied to a brake from a pedal-operated brake control valve assembly. The power source comprises a source of hydraulic fluid o... | 05/10/1983 |
| 4332254 | System for filling and inflating and deflating a vascular dilating cathether assembly A system for filling and subsequently producing inflation and deflation of a balloon-type dilating catheter assembly utilized in performing a percutaneous transluminal coronary angioplasty procedure. Separate primary and secondary fluid pump assemblies ar... | 06/01/1982 |
| 4312463 | Proportional pumping apparatus Apparatus for delivering highly viscous liquids from a pair of containers for mixing together, including a metering pump mounted on each of the containers, an air motor connected to one of the metering pumps, a master hydraulic cylinder connected to the a... | 01/26/1982 |
| 4309150 | Peristaltic motors A peristaltic motor is provided comprising a reciprocating slave piston adapted to be actuated by the progressive, sequential contraction of two aligned, resiliently deformable peristaltic tubes by a weighted roller such as a wheel of a heavy vehicle. The... | 01/05/1982 |
| 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 |
| 4182220 | Push rod assembly A push rod assembly having a first section and a second section through which an input force is transmitted to an output member. The first section includes a cylindrical member with a bellows attached thereto. The cylindrical member has a bore therein. Th... | 01/08/1980 |
| 4159755 | Safety hydraulic brake system for automotive vehicles A safety hydraulic brake system for automotive vehicles which includes a control cylinder having an inlet connected to a hydraulic pressure source, and first and second outlets connected to brake cylinders at front and rear wheels, respectively. A valve i... | 07/03/1979 |
| 4137718 | Power brake unit A housing includes therein a servo pressure control valve disposed in parallel to a master-cylinder piston. The foot pedal operates an actuating member which operates directly on the master-cylinder piston and via a forked section of the actuating member ... | 02/06/1979 |
| 4126996 | Hydraulic brake booster for a vehicular brake system An improved hydraulic brake booster including a booster cylinder and a dual-circuit main cylinder connected together. The brake booster includes a booster piston which defines a storage pressure chamber and the dual-circuit main cylinder includes a double... | 11/28/1978 |
| 4117681 | Tandem master cylinder with integral proportioning valve A tandem brake master cylinder has a proportioning valve between two pressure regions therein. The pressure in a second pressure region changes by a proportion of the change in a first pressure region at least over a part of the pressure range of the firs... | 10/03/1978 |
| 4052855 | Brake master cylinder construction Dual master cylinders are arranged to apply hydraulic pressure to a single set of vehicle brakes through a double check valve and single brake fluid conduit. A first of the master cylinders is actuated by compressed air in response to manipulation of an o... | 10/11/1977 |
