474results about "Reservoir arrangements" patented technology

The invention relates to a parking brake device (10) of a vehicle, especially a utility vehicle, with an emergency release function, comprising at least one spring brake cylinder (11) for releasing or engaging a parking brake and a first electro-pneumatic parking brake circuit (14) with a first compressed air storage tank (16) and a first valve control device (17) for aerating or deaerating the spring brake cylinder (11). A second electro-pneumatic parking brake circuit (15) for emergency release of the parking brake in the event of failure of the first parking brake circuit (14) is further provided, which comprises a second compressed air storage tank (38) and a second valve control device (40) for aerating the spring brake cylinder (11) in the event of an emergency release. The second valve control device (40) comprises an aeration connection (41) connected to the second compressed air storage tank (38), a deaeration connection (45) that can be connected to the atmosphere and a third connection (42) that can be connected to the spring brake cylinder (11). According to a first aspect of the invention and in order to improve the releasability of the parking brake device in the event of an emergency release, the deaeration connection (45) of the second valve control device (40) is connected to a compressed air line (46) which terminates at an outer region of the vehicle, wherein compressed air can be fed in this compressed air line (46) from an external compressed air source (48) to the spring brake cylinder (11) via the deaeration connection (45) and the third connection (42) of the second valve control device (40).

A cap assembly is provided for a container that defines a reservoir for power steering fluid. The cap assembly has an outer cap adapted to be secured to an open mouth of the container and an inner cap secured to the outer cap and adapted to extend through the open mouth into a neck of the container. The inner cap has an O-ring adapted to seal against a neck of the container. A build-up of air in the reservoir is vented to the outside atmosphere through a passageway in the cap assembly. A filter in the passageway is adapted to pass the air but not to pass a mist emanating from the power steering fluid. The filter condenses the mist for return to the reservoir

In a metal bellows accumulator, a metallic bellows unit is disposed within a pressure space defined in a main shell, and one end of the metallic bellows unit is fixedly secured to one end wall of the main shell. The metallic bellows unit sections the pressure space into an outer chamber serving as a gas chamber in which a pressurized gas is enclosed, and an inner chamber serving as a liquid chamber communicating with a liquid port formed in the end wall of the main shell. A stopper (auxiliary shell) for limiting collapsing movement of the metallic bellows unit is disposed within the liquid chamber and has a communication passage hole. The liquid port always communicates with a liquid chamber to which an inner circumferential surface of a bellows portion of the metallic bellows unit is exposed via the communication passage hole.

A brake system has a wheel brake and is operable under a non-failure normal braking mode and a manual push-through mode. The system includes a master cylinder operable by a brake pedal during a manual push-through mode to provide fluid flow at an output for actuating the wheel brake. A first source of pressurized fluid provides fluid pressure for actuating the wheel brake under a normal braking mode. A secondary brake module includes a plunger assembly for generating brake actuating pressure for actuating the wheel brake under the manual push-through mode.

The present invention provides an apparatus and method for filtering fluid in a breather assembly and providing uncontaminated fluid to a reservoir. The breather allows in-take fluid traveling through a first flow path to be filtered before entering the reservoir through a first directional valve. The breather also allows exhaust fluid traveling through a second flow path, separate from the first flow path, to exit through a second directional valve.

An apparatus and method for providing enhanced vacuum to a brake booster of a braking system under certain operational conditions. Vacuum is stored in a reservoir and is controllably released to the brake booster to provide a brake booster vacuum level of at least a predetermined vacuum level threshold in order to avoid brake pedal performance issues being perceived by the driver of motor vehicles utilizing engines utilizing a supplemental brake assist system under conditions where the brake booster vacuum level is less than the predetermined vacuum level threshold.

A pressurizable gas reservoir can include a first end member and a second end member that is disposed in longitudinally-spaced relation to the first end member. A flexible reservoir member can extend between opposing first and second ends. The first end secured to the first end member and the second end secured to the second end member. The flexible reservoir member at least partially defines a reservoir chamber between the first and second end members that is capable of storing a quantity of pressurized gas for an extended duration of time. The first and second end members can be maintained in substantially-fixed axial position relative to one another. A suspension system including such a pressurized gas reservoir and a method of assembly are also included.

A fluid system for a vehicle is provided. The fluid system is configured to couple to a chassis of the vehicle. A frame assembly of the fluid system is configured to couple with the chassis directly or with another component that is coupled, directly or indirectly, with the chassis. A cowling of the fluid system can enclose a fuel pressure vessel and an auxiliary fluid vessel. The auxiliary fluid vessel is configured to be placed in fluid communication with the component powered or operated by the fluid therein.

A method of fabricating a liquid crystal display using a negative photo-resist. A passivation layer covering a thin film transistor, a data line, and a gate line is formed on a transparent substrate. The passivation layer is patterned to define a contact hole that exposes a drain electrode. A transparent conductive film in electrical contact with the drain electrode via the contact hole is then formed on the passivation layer. A negative-type photoresist is coated on the transparent conductive film. The transparent conductive film is then exposed with an image of the desired pixel electrode. The negative-type photoresist is then developed to expose portions of the transparent conductive film over a data line, a gate line, and the area of the thin film transistor area. The exposed transparent conductive film is then etched.

Disclosed is an electric brake system. The electric brake system includes a reservoir configured to store oil, a master cylinder connected to the reservoir, provided with first and second master chambers and first and second pistons respectively provided at the first and second master chambers, and configured to discharge oil according to pedal effort of a brake pedal; a hydraulic pressure supply device operated to generate a hydraulic pressure by an electrical signal output in response to displacement of the brake pedal; and a hydraulic pressure control unit configured to deliver the hydraulic pressure discharged from the hydraulic pressure supply device to a wheel cylinder provided at each of wheels, wherein the reservoir includes a first reservoir chamber connected to the master cylinder and configured to supply the oil thereto, and a second reservoir chamber connected to the hydraulic pressure supply device, configured to supply the oil thereto and provided to be separated from the first reservoir chamber.

A relay valve configuration which can be used with various cars in an electropneumatic train and under the control of one of the electropneumatic brake control valves. The improved brake control valve includes a relay valve mounted at an interface of the manifold. The valve has a source inlet connected to the reservoir interface port, an inlet connected to atmosphere, an outlet connected to the brake cylinder interface port and a control inlet connected to the exhaust interface port. The valve is responsive to the control inlet connected to the exhaust interface port to selectively connect the brake cylinder interface port either to the reservoir interface port or atmosphere. The exhaust interface port in AAR is known as the retainer port. A check valve/choke is also mounted on the manifold of the interface and is in the same housing as the relay valve.

The present invention provides a brake fluid storage device for a vehicle and an auxiliary tank used in the storage device. The storage device can improve maintainability when the brake fluid is replenished, etc., and can also be reliably used when the vehicle is tilted. The brake fluid level in the auxiliary tank is suppressed from falling. A main tank (25) having a brake fluid injection port (28) at the top and an auxiliary tank (26) having communication ports (35a, 35b) with the master cylinder (11) are connected by pipes (27). Make the connection port (34) of the main tank (25) side of the auxiliary tank (26) extend into the tank body (26a), and arrange the opening end (40) of the connection port (34) on the pipe (27) from The auxiliary tank (26) is positioned farther from the main tank (25) than the conduction port (35a) toward the main extension direction of the main tank (25).

The invention relates to a brake fluid reservoir comprising at least two lateral mounting lugs (10, 11) designed to be placed either side of a central mounting lug (20) of a brake master cylinder. Collinear holes (12, 13, 21) traverse these lugs and are designed to receive a mounting pin (3). The said lugs include at least one device for the axial immobilization of the mounting pin (3). Applications: brake fluid reservoir mounting.