4836results about How to "Avoid instability" patented technology

The present invention provides a reduction mechanism in which high torque output can he achieved, thinness and size and weight reduction can be achieved, and the number of teeth of a gear and reduction ratio can be freely set. In a gear motor that includes a reduction mechanism in which a planetary two-stage gear is arrayed between a sun gear of a planetary gear mechanism and an internal gear of a planetary gear mechanism, the reduction mechanism has at least a single planetary two-stage gear arrayed such as to be positioned between the sun gear and the internal gear and including a small gear or a large gear that meshes together with a large gear or a small gear of the planetary two-stage gear, and both end portions of the at least a single planetary two-stage gear are supported by ball bearings.

Provided is a memory system in which a pair of differential signals transmitted via a pair of transmission lines are prevented from being terminated at the same voltage during a standby mode, thereby preventing a receiver from entering an unstable state. The memory system includes a pair of transmission lines, a transmitter that outputs a pair of differential signals to the pair of transmission lines, and a receiver that receives the pair of differential signals via the pair of transmission lines. A first termination voltage is applied to one of the pair of transmission lines, and a second termination voltage is applied to the other transmission line. The first termination voltage is determined to be different from the second termination voltage.

The present invention provides a reduction mechanism in which high torque output can be achieved, thinness and size and weight reduction can be achieved, and the number of teeth of a gear and reduction ratio can be freely set. In a gear motor that includes a reduction mechanism in which a planetary two-stage gear is arrayed between a sun gear of a planetary gear mechanism and an internal gear of a planetary gear mechanism, the reduction mechanism has at least a single planetary two-stage gear arrayed such as to be positioned between the sun gear and the internal gear and including a small gear or a large gear that meshes together with a large gear or a small gear of the planetary two-stage gear, and both end portions of the at least a single planetary two-stage gear are supported by ball bearings.

A pressure resistant plastic bottle for containing and dispensing an aerosol composition. The plastic bottle is designed to reduce deformation by a local reinforcement to the neck and shoulder regions. The reinforcement preferably comprises the provision of a wall thickness for a lower portion of the neck as compared to the wall thickness of the upper portion of the neck to be increased by a ratio of from about 1.25:1 to about 2.5:1.

A post-occlusion chamber collapse canceling system for a surgical apparatus that detects the breaking of occlusions by tissue fragments in the distal end of the aspiration path and produces a response comprising a transitory blockage of the distal end the aspiration path to terminate the chamber collapse and a simultaneous transitory venting of the aspiration line to relieve the vacuum, in a way that post-occlusion chamber collapses are cancelled.Disclosed herein, in a preferred embodiment, is a surgical system and related method for preventing collapse of a body chamber being operated upon, due to a vacuum surge following a clearing of an occlusion in an aspiration path of the surgical system, comprising: an occlusion-break sensor for sensing the clearing of the occlusion; a normally-open occlusion valve, temporarily closing in response to the occlusion-break sensor sensing the clearing of the occlusion, thereby occluding fluid flow through the aspiration path and controllably stabilizing the occlusion break, thereby preventing the vacuum surge and consequent body chamber collapse; and a normally-closed venting valve temporarily opening in response to the occlusion-break sensor sensing the clearing of the occlusion, to reduce the vacuum thereby preventing the vacuum surge and consequent body chamber collapse. In an alternative embodiment, the normally-open occlusion valve may be omitted.In yet another alternative embodiment, disclosed is a similar surgical system and related, comprising a normally-closed occlusion valve, temporarily opening for a defined interval before returning to a closed stated, and repeating the temporarily opening and closing at a controlled repetition rate, in response to control by an operator of the system, wherein, by opening the aspiration path in response to the control by the operator, flow through the aspiration path is controlled by the operator thereby preventing the vacuum surge and consequent body chamber collapse.

Circuitry and techniques designed to allow stable and continuous delivery of alternating power to a plasma with switch-mode power supply (16) include a variety of embodiments. Parallel, series, and other circuit elements connected across switching element (7) are tuned so that energy at other than the fundamental frequency is absorbed and dissipated. This energy may be only at the second harmonic or it may be across broad frequency ranges through selecting high impedance at the fundamental frequency and relatively low impedance at other frequencies. In overcoming instabilities, oscillations, and even changing class of operation of the switch-mode power supply, the stabilizing element absorbs the energy to avoid allowing it to affect switch (7) of power supply (16).

The invention relates to a cascade-developed heat utilization system of solar energy, which adopts that: in a low temperature section, a complex parabolic condenser is matched with a normal temperature receiver and the normal temperature receiver is output to an intermediate temperature section; in the intermediate temperature section, a parabolic trench-typed condenser is matched with an intermediate temperature receiver which is output to a high temperature section through a gas-water separator; in the high temperature section, a disk-typed condenser is matched with a high-temperature receiver which is output to a steam turbine. The cascade-developed heat utilization system of solar energy of the invention solves the defects that disk type is too expensive in manufacturing, and the trench type incurs the conflict between the reliability and the efficiency at high temperature, and the like. The effects of the cascade-developed heat utilization system of solar energy of the invention lie in that: the low temperature section adopts the complex parabolic condenser, the intermediate temperature section adopts the parabolic trench-typed condenser and the high temperature section adopts the parabolic disk-typed condenser; the three heat collecting sections are connected in series and respective advantages thereof are utilized while respective defects thereof are avoided; the three heat collecting sections are led to be combined dynamically to produce synergistic effects.

The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be at least one phenol or a mixture of at least one phenol with other stabilizers. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.

A turbine (2) driven electric power production system (1),—said turbine (2) arranged for being driven by a fluid (3) having a fluid speed (v) varying in time,—said turbine (2) connected to a hydrostatic displacement pump (6) further connected to a hydrostatic displacement motor (8) as part of a closed loop hydrostatic transmission system (7),—said motor (8) arranged for driving an electrical generator (9) supplying AC power (10) at a frequency (fg) near a given desired frequency (fdes), characterized by a closed loop system arranged for controlling a volumetric displacement (13) of the hydrostatic motor (8), comprising—a fluid speed meter (11m) arranged for producing a speed signal (11s) representing a speed (v) of said fluid (3), and—a rotational speed meter (12m) arranged for providing a rotational speed signal (12s) representing a rotational speed measurement (ω) of said turbine (2), —a motor displacement control system (15) for continuously receiving said speed signal (11s) and said rotational speed signal (12s) and arranged for calculating a control signal (16), —a volumetric displacement control actuator (17) on said hydrostatic motor, arranged for receiving said control signal (16) for continuously adjusting a volumetric displacement (d) of said hydrostatic motor (8) for maintaining a set turbine tip speed ratio (tsrset) and thereby providing an improved power efficiency of the power production system (1) during fluctuations in said fluid speed (v).

The invention discloses a strong-inhibition water-base drilling fluid which comprises the following components in parts by mass: 100 parts of water, 0.2-4 parts of polyamine inhibitor, 0.1-1 part of coating inhibitor, 10-25 parts of hydrate inhibitor, 0.1-1 part of tackifier, 0.5-5 parts of fluid loss agent and 0.5-3 parts of liquid lubricant. The polyamine inhibitor is an amino polymer polymerized from polyether diamine and epoxy alkane; and the mol ratio of the polyether diamine to the epoxy alkane is 1-10:1-20. The drilling fluid disclosed by the invention can effectively inhibit wellbore instability of deepwater shallow strata, and has equivalent inhibition capability to an oil-base drilling fluid. The drilling fluid disclosed by the invention can solve the problem of generation of hydrate in deepwater drilling, and is applicable to 3000m-deep drilling operation. The drilling fluid disclosed by the invention has favorable low temperature-high temperature stability, and is applicable to a deepwater large-temperature-difference environment (2-150 DEG C).

The present disclosure relates to compositions comprising at least one fluoroolefin and an effective amount of a stabilizer comprising at least one ascorbic acid, terephthalate, or nitromethane, or mixtures thereof. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.