Abstract: Methods and apparatus for fast session restoration of user sessions in a network node are suitable for latency sensitive applications. The fast session restoration techniques take advantage of the layered architecture of a network node and stores layer-specific descriptors that describe the states of corresponding service layers of a network node for an active session. When a failure of the network nodes occurs, the descriptors are used to achieve a seamless and fast session restoration.

Abstract: According to an aspect there is provided a computer-implemented method of operating a leader server in a leader server-follower server log replication configuration.

Abstract: Methods and apparatus for fast session restoration of user sessions in a network node are suitable for latency sensitive applications. The fast session restoration techniques take advantage of the layered architecture of a network node and stores layer-specific descriptors that describe the states of corresponding service layers of a network node for an active session. When a failure of the network nodes occurs, the descriptors are used to achieve a seamless and fast session restoration.

Abstract: Fail-over protection is provided for a server cluster including a plurality of primary nodes supporting user sessions and a standby node. When the standby node determines that a primary node in a cluster has failed, the standby node configures its network interface to use an Internet Protocol (IP) address of the failed primary node. The standby node further retrieves session data for user sessions supported by the failed primary node from a low latency database for the cluster and restores the user sessions at the standby node. When the user sessions are restored, the standby node switches from a standby mode to an active mode.

Abstract: A none-compression internal combustion rotor motor and method to eliminate all of the disadvantages of the presently available internal combustion engines. By eliminating the compression stroke, increasing the efficiency. By replacing the crank shaft, the valve train and the cast iron parts with the main rotor, the combustion pressure can be converted into much higher rotational power and torque and efficiency. By having less parts, and by manufacturing from aluminum, eliminating all of the cast iron parts, reducing the manufacturing energy consumption. By having only balanced rotating parts that rotate on bearings without touching each other, greatly increasing the lifetime of the motor. The none-compression internal combustion rotor motor is air cooled needing no coolant, making it environmentally friendly.

Abstract: A none-compression internal combustion rotor motor and method to eliminate all of the disadvantages of the presently available internal combustion engines. By eliminating the compression stroke, increasing the efficiency. By replacing the crank shaft, the valve train and the cast iron parts with the main rotor, the combustion pressure can be converted into much higher rotational power and torque and efficiency. By having less parts, and by manufacturing from aluminum, eliminating all of the cast iron parts, reducing the manufacturing energy consumption. By having only balanced rotating parts that rotate on bearings without touching each other, greatly increasing the lifetime of the motor. The none-compression internal combustion rotor motor is air cooled needing no coolant, making it environmentally friendly.

Abstract: A hydraulic power steering system for a motor vehicle with a rotary slide valve and a reaction piston which can be pressurized with hydraulic medium optionally on one of its two faces, where the reaction piston transfers, depending on the pressurization, a moment to the rotary slide, the moment changing the driver's manual moment at the steering handle such that a moment superimposed on the manual moment can also be generated, the superimposed moment leading to an increase or decrease of the manual moment or to a reversal of the direction of the manual moment. For the hydraulic pressurization of the reaction piston, a conveyance device driven by an electric motor is provided. Preferably, the conveyance device with the electric motor is mounted on the rotary slide valve and draws hydraulic medium from a tank recycling line.

Abstract: A high speed airship (10) with multiple inflatable chambers (11) arranged in a multiplicity of tubular clusters to enhance structural strength and to create a centrally located passenger or cargo tunnel (18) to increase passenger safety. A conical shaped rigid frame front cabin (14) attached to the front end of the airship, and a conical shape rigid frame aft cabin (15) attached to the aft end of the airship, designed to reduce aerodynamic drag, to achieve high speed, and to be able to land on water. Specially designed multiple sections with multiple inner tubes to increase safety. Helium recovery system to control balance and buoyancy without the loss of helium and to eliminate the use of ballast, which otherwise would reduce lifting capacity. Independently rotateable propulsion units (22) for rapid balance and buoyancy control in emergency and to provide high maneuverability to eliminate the need of ground crew.

Abstract: A vibration damper for a hydraulic motor vehicle brake installation is provided with a membrane facing the hydraulic medium transferring the braking force which, with its edge region, is finally attached to a carrier element functioning especially as a brake piston in the brake saddle of a motor vehicle brake. The membranes can move at least slightly toward the carrier element or away from this in its central region, whereby the membrane together with a further membrane form a membrane unit. The two membranes are arranged basically one over the other, lie tightly one upon the other, and enclose between themselves a hollow space in the central region within this edge region. Preferably, the membrane facing the carrier element is set at a distance apart from the fastening section of the membrane unit and from the surface of the carrier element so that the space between the surface of the carrier element and the facing membrane stands in fluid connection with the hydraulic medium.

Abstract: The invention relates to a hydraulic stabilizing system, particularly for a chassis of a vehicle, which has a tank for hydraulic fluid and a pump which are connected by way of corresponding hydraulic lines with front and rear axle actuators, a directional valve being connected in front of the actuators, and the pressure at the front axle actuator being controllable such that it is greater than or equal to the pressure at the rear axle actuator. The invention is characterized in that, between the directional valve for the front axle actuator and the pump, a fail-safe valve is provided and, between the fail-safe valve and the directional valve in the front axle forward flow line, a pressure sensor is provided.

Abstract: The invention relates to a vibration damper for a hydraulic vehicle brake system with a diaphragm facing the hydraulic fluid that transmits the braking force and being fastened to a carrier device by its edge in such manner that it is able to move toward the carrier device or away from it at least slightly in its center area. Based on the invention, the hollow chamber between the diaphragm and the carrier device, which is required for the movement of the diaphragm, has been largely evacuated. The stiffness of the diaphragm is preferably selected in such a manner that the diaphragm rests completely against the surface of the carrier device facing toward it at a pressure of the hydraulic fluid in the range of 25 bar and more. In some areas, the diaphragm can have a wave-shape cross-sectional design as can the surface of the carrier device facing toward the diaphragm.

Abstract: A vibration damper is provided for a hydraulic vehicle brake system with a diaphragm facing the hydraulic fluid that transmits the braking force and being fastened to a carrier device by its edge in such manner that it is able to move toward the carrier device or away from it at least slightly in its center area. The hollow chamber between the diaphragm and the carrier device, which is required for the movement of the diaphragm, has been largely evacuated. The stiffness of the diaphragm is preferably selected in such a manner that the diaphragm rests completely against the surface of the carrier device facing toward it at a pressure of the hydraulic fluid in the range of 25 bar and more. In some areas, the diaphragm can have a wave-shape cross-sectional design as can the surface of the carrier device facing toward the diaphragm.

Abstract: A vibration damper for a hydraulic motor vehicle brake installation is provided with a membrane facing the hydraulic medium transferring the braking force which, with its edge region, is finally attached to a carrier element functioning especially as a brake piston in the brake saddle of a motor vehicle brake. The membranes can move at least slightly toward the carrier element or away from this in its central region, whereby the membrane together with a further membrane form a membrane unit. The two membranes are arranged basically one over the other, lie tightly one upon the other, and enclose between themselves a hollow space in the central region within this edge region. Preferably, the membrane facing the carrier element is set at a distance apart from the fastening section of the membrane unit and from the surface of the carrier element so that the space between the surface of the carrier element and the facing membrane stands in fluid connection with the hydraulic medium.

Abstract: A lighting apparatus is provided having a plurality N of light sources arranged annularly around the optical axis of a reflector. The efficiency of such an apparatus and its service life are improved by providing a central mirrored column which is symmetrically disposed with respect to the light sources. The column has C.sub.N or D.sub.N symmetry and reflects light emitted by the light sources away from the light sources themselves, thereby reducing the amount of light reflected back at the light sources and reducing their thermal load. The column has peaks that extend into the notional annulus on which the light sources are arranged to shield adjacent light sources from each other.

Abstract: A container seal and siphon tube outlet combination where a sealing bias is provided by a ported leaf type spring which is also oppositely reacting against and biasing closed a manually operated poppet valve. The leaf spring is generally concave circular disk with a non-circular port in the center. The port is shaped to include fingers extending axially and radially inward, tending to keep the port open. The siphon tube is also sealed by the bottle cap seal. The manual actuation is accomplish by a lever applying force to the poppet against the spring bias.

Abstract: A light source having a single glass bulb housing and a multiple of three electrically interconnected fluorescent tubes. The tubes are located outside of the focal point of a smooth curved mirror. The phases of the fluorescent bulbs are electrically overlapped so as to substantially eliminate flickering of the light and to maximize the light intensity.This is a file wrapper continuation of application Ser. No. 166,783, filed Mar. 2, 1988; which is a file wrapper continuation of application Ser. No. 859,614, filed on May 5, 1986, both now abandoned.