Abstract: There is disclosed a brake force regulator for a motorcycle hydraulic brake system wherein the pressure from a pedal-operated master cylinder is adapted to actuate a rear-wheel brake and a front-wheel brake, and the pressure from a hand-operated master cylinder is adapted to actuate another front-wheel brake. In this brake system, the brake force regulator provides for reduced supply of pressure to the rear-wheel brake dependent on the pressure from the hand-operated master cylinder when both master cylinders are actuated simultaneously. If only the hand-operated master cylinder is actuated, this will not have any effect on the rearwheel brake.

Abstract: A control device for controlling the speed of power pistons and machine elements driven by the pistons with a signal transmitter coupled to the elements, a pressure transducer producing an output from the transmitted signal having an incrementally variable transmission ratio and a throttle device with a plurality of differently shaped orifices controlled by the transducer output.

Abstract: A master cylinder for a two-circuit brake system which includes anti-skid control has two separate chambers and pistons. The main control piston is surrounded by an auxiliary piston which it engages after a predetermined amount of travel. The auxiliary piston has an extension which holds the brake control valve and which is opened by the control piston during its travel. Furthermore, the second circuit cylinder includes a pressure sensor which can activate a warning when the piston travel is not in a predetermined relation to the applied fluid pressure.

Abstract: Apparatus for hydraulic control of friction brakes of an automobile vehicle which comprises a first master-cylinder directly connected to the hydraulic brake circuit and operated by the driver's brake pedal and a second master-cylinder operated by release of the gas pedal, and connected to the first master-cylinder in place of the reservoir thereof. The first master-cylinder is a tandem master-cylinder which comprises a first piston connected by the intermediary of a linkage to the brake pedal and a second piston dividing the interior of the first master-cylinder into first and second chambers. The first chamber is located between the two pistons and is connected to a first hydraulic brake control-circuit, while the second chamber is situated at an end of said cylinder and is connected to a second hydraulic brake control-circuit. The two chambers are supplied with liquid.

Abstract: 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 piston which defines a primary pressure chamber. A separating wall is provided which is connected to both the booster cylinder and the dual-circuit main cylinder and separates the storage pressure chamber from the primary pressure chamber.

Abstract: Compensating cylinders are provided for pairs of transverse steering linkages connecting pairs of tractors that steer in unison on opposite sides of a main frame of a heavy construction machine whereby the steering linkages automatically extend and retract to accommodate the changes in length imposed by changes in the slope or off-sets in the grade being negotiated by the machine.

Abstract: This hydraulic coupling and speed multiplying mechanism consists of an annular cylinder block having several rows of radial transmitting cylinders wherein are operatively disposed the corresponding radial pistons. The pistons in each circular row are uniformly spaced apart, while laterally adjacent pistons are angularly off-set relative to each other. Centrally disposed in said annular cylinder block is a cam assembly which actuates the pistons in one row simultaneously and the several rows sequentially. The transmitting cylinders in one row are interconnected and have a common pipeline. Two rows of transmitting cylinders are connected to a receiving cylinder a piston in which actuates a crankshaft to which may be connected any desired rotary device.

Abstract: A booster operated master cylinder piston for use in an anti-skid braking system includes a modulator piston located between the master cylinder piston and the booster valve assembly. In the event of a skid the pressure of booster fluid acting on the modulator piston is equalized across the modulator piston.

Abstract: A dual source power brake booster assembly includes an air-vacuum operated booster section and a hydraulic pressure operated booster section in series. The assembly is so arranged that the vacuum booster section is initially actuated to obtain a booster brake operation when the vehicle operator depresses a brake pedal, and the hydraulic booster section is actuated so as to continue the booster brake operation in response to the increased depression on the brake pedal after the vacuum booster reaches its limit or run-out condition. Both of the booster sections have power members or pistons, respectively, which are always actuated as a unit, so that a common reaction mechanism may be provided for both booster sections.

Abstract: The vacuum chamber of the master booster is connected to a slave booster having a chamber also normally below atmospheric pressure. The variable pressure chamber of the master booster is connected to the other chamber of the slave booster through a check valve. The master booster operates a dual master cylinder with one pressurizing chamber connected to the rear brakes and the other pressurizing chamber connected to the master cylinder associated with the slave booster and then to the front brakes. In the first stage of actuation the master booster operates its master cylinder to pressurize the front and rear brakes equally. When a preselected boost level is reached, the pressure increase in the master booster variable pressure chamber will open the check valve and the pressure increase will be delivered to the slave booster.

Abstract: A master cylinder has a first piston and a second piston slidably disposed respectively in two piston chambers of different diameters, reduced diameter stems projecting from the opposing end portions of the pistons respectively, a flange formed around the outer periphery of each of the stems, and a split sleeve consisting of two or more co-operating elements and having stepped portions in the inner circumference thereof at the opposite ends respectively, the split sleeve being restrained in a cylindrical shape with the stepped portions engaging with respective flanges thereby connecting the two pistons with each other.

Abstract: A hand operated control system for transmitting signals from a user's hand to a running gear of a skateboard type device, comprising of a hand operated master unit, a slave unit connected to the running gear and a resilient self storing tube connecting said units for transmitting signals therein between.

Abstract: A hydraulic braking system is provided for automatically apportioning braking of the wheels of a vehicle in accordance with the load on respective wheels. A plurality of brake control assemblies each dedicated to one of the wheels of the vehicle are coupled to produce braking of the corresponding wheel upon activation of the brake pedal. The degree of actuation of each brake control assembly is controlled by an element which senses load differences between all wheels on the vehicle (including load differences between wheels on either side of the vehicle and between front and rear wheels), and adjusts the degree of actuation of the corresponding brake control assembly accordingly. In an illustrative embodiment each brake control assembly includes a brake control cylinder having a piston movably disposed therein. The pistons are coupled to the brake pedal so as to be maximally advanced into the brake control cylinder when a maximum brake force is applied.

Abstract: There is provided an improved dual side-by-side master cylinder having parallel pistons, one for each of two hydraulic sub-systems, and an actuator to move the pistons from a single applied force, e.g., a brake pedal, characterized by an improved structure for the actuator and its coacting rocking beam member for equalizing pressures in the two hydraulic sub-systems and for providing for takeover for direct transmission of force to one piston in the event of failure in the other sub-system.

Abstract: In a master cylinder assembly a booster valve assembly is adapted to control two separate supplies of booster fluid, and each supply is capable of advancing a modulator piston independently to operate a master cylinder.

Abstract: The invention relates to a brake control device including, a pump driven by an engine, a brake pedal actuated by a vehicle driver, wheel brake cylinders, manual operating means operatively connected with the brake pedal, pressure control valve means having a hollow seat member provided with a normally open-passage therein and a valve seat thereon and conrolling the hydraulic fluid to the pump according to the actuation of the manual operating means, flow regulating valve means having a variable orifice and a fixed orifice and supplying the hydraulic fluid to the passage of the pressure control valve means through the fixed orifice, power piston means actuated according to the actuation of the pressure control valve means, and master cylinders operatively connected with the power piston means for supplying the fluid pressure to the wheel brake cylinders.

Abstract: In a dual hydraulic master cylinder assembly both pressure spaces are connected by a transfer passage incorporating a transfer valve which is open when both master cylinders are operated simultaneously, and the transfer valve comprises an unsprung valve member for engagement with one of a pair of spaced valve seatings to cut-off communication between the pressure spaces when one master cylinder is operated on its own.

Abstract: A pressure force generator for machine tools is disclosed as having at least two pneumatically-hydraulically operated pressure multipliers in which the multipliers and their plungers are connected to a single high-pressure container containing a liquid.

Abstract: A dual brake system is provided with a master cylinder unit, a pressure regulator valve unit and at least one wheel brake unit. Each unit has two hydraulically independent chambers therein and one chamber of each unit is connected with one chamber of each of the other units to define two independent hydraulic brake units. The ratio between the chamber of one unit to the chamber of the other unit in each unit is identical and is other than unity. An indicator or alarm is operatively connected to the pressure regulator valve unit.

Abstract: Caliper type bicycle brakes for the front and rear wheel are actuated simultaneously by a single actuator assembly mounted adjacent the handlebar. Hydraulic fluid under pressure is delivered to the brakes through two self-contained hydraulic circuits, one for the front brake and one for the rear brake. The brake system includes a device for applying a greater braking force at the front wheel than at the rear wheel. In an alternate embodiment the brake system is actuated by the chain drive system of the bicycle. Improved brake shoe elements and a device for wiping water from the wheel rim for enhanced wet weather braking are also disclosed.

Abstract: An aircraft stores suspension and release device including extendible ejers for forcibly ejecting an attached store. The extendible ejectors are hydraulically actuated and dependently connected for positive control and the degree of extension of each ejector is independently adjustable. The extendible ejector may be connected together by mechanical or hydraulic linkage which may be gas, hydraulically or mechanically operated.

Abstract: This hydraulic coupling mechanism consists of at least a pair of pressure transmitting cylinders which are operated in a predetermined sequence, at least a pair of pressure receiving cylinders synchronously operated by the pressure transmitting cylinders through corresponding closed liquid lines, each of which is provided with a corresponding pressure adjustable cylinder.