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Class 60/556 - Power fluid input controller operated by piston or diaphragm acted on one side by pressure of a manual master and on the other by pressure of a power driven master


Subclass of Class 60 - Power plants
Definition: Apparatus with a separate manual master and including a
No. of patents: 16
Last issue date: 01/20/1998


NumberTitleIssue Date
5709087Power brake apply system
A power brake apply system includes a master cylinder having a piston for generating fluid pressure within a braking circuit. A boost valve assembly is mounted adjacent the master cylinder and carries a slidable spool that selectively closes off a normal ...
01/20/1998
5634338Fluid pressure control device
A fluid pressure control device has a sliding member fitted in a housing for switching over the connection and the disconnection between an input port connected to a fluid pressure supply source, an output port connected to a fluid pressure operated devic...
06/03/1997
5090293Hydraulic booster with reaction force imparting surface of easily modifiable form
A hydraulic booster for slip-controlled brake systems, including a booster piston (1) arranged in a booster housing (11) and confining a booster chamber (4). A braking pressure control valve is provided whose control part (12) is actuatable by a lever mec...
02/25/1992
4732002Servo-assisted master cylinder assemblies
A servo-assisted master cylinder assembly for a vehicle hydraulic braking system has a tandem master cylinder with primary and secondary pistons operative to pressurise primary and secondary pressure spaces for primary and secondary brake circuits. A serv...
03/22/1988
4651528Hydraulic 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
4637208Hydraulic assistance device for braking
Hydraulic assistance device incorporating a casing provided with a bore in which a first piston is mounted so as to slide, the piston being able to move under the effect of a brake pedal between a first position, isolating a first chamber which is joined ...
01/20/1987
4463562Booster assisted hydraulic master cylinders for vehicle braking systems
In a master cylinder assembly the pressure spaces in advance of pedal-operated pistons of two separate master cylinders are interconnected by a transfer passage, and each master cylinder incorporates a boost chamber to which hydraulic fluid from a pressur...
08/07/1984
4449369Power assisted hydraulic control system
The invention provides a power assisted hydraulic control system suitable for actuating clutches and brakes. The system incorporates a master cylinder having a master piston therein defining a control chamber, a hydraulic power assistance unit, and a dist...
05/22/1984
4419923Toggle assembly for vehicles or cars
A toggle assembly for vehicles or cars comprising a relay cylinder mounted on an end plate including a booster cylinder and an output cylinder, a control chamber arranged in coaxial relation to the relay cylinder, a control valve for controlling a gas by ...
12/13/1983
4313303Brake force booster, especially for motor vehicles
A brake force servo-device, especially for motor vehicles, with a control piston, selectively actuatable preferably by a brake pedal, which cooperates with a connecting valve connected with a pressure medium source and which is operable to displace a flow...
02/02/1982
4312182Hydraulic control for automobile brakes
The invention relates to a hydraulic control, particularly for automobile brake systems having two separate independent brake circuits, in which a master cylinder comprises a first chamber in which pressure is controlled by the driving-in of a master pist...
01/26/1982
4311085Hydraulic brake booster
A hydraulic brake booster includes a housing 12 with a first chamber 40 and a second chamber 42. An input member 54 extends into the first chamber 40 and is exposed to the second chamber 42. The input member is movable within the first chamber 40 to incre...
01/19/1982
4274521Synchronized hydropneumatic control of clutch and gearbox
The object of the invention is a synchronized hydropneumatic control of clutch and gearbox. In accordance with the invention a hydropneumatic servomotor clutch control has been provided which includes a jack the piston of which is assisted by a pneumatic ...
06/23/1981
4254623Hydraulic control system for brake device
A hydraulic control system for a brake device comprises independent first and second brake circuits, the first circuit communicating with a first chamber pressurized by movement of a master piston actuated by a brake pedal, and the second circuit communic...
03/10/1981
4208880Hydraulic brake system for vehicles
Disclosed is a hydraulic brake system for vehicles having a separated-type hydraulic fluid pressure amplifier, such as a hydraulic air servo or a hydraulic vacuum servo. This hydraulic brake system includes a brake master cylinder and said fluid pressure ...
06/24/1980
3958423Hydraulic 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
 
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