Abstract: A method for treating sleep disordered breathing includes providing pressure into a patient's airway over a period of time that includes a plurality of inhalation periods and a plurality of exhalation periods. The pressure is at a relief positive airway pressure during a portion of the inhalation periods including an end of the inhalation period, and the pressure is at a therapy positive airway pressure greater than the relief positive airway pressure during a portion of the exhalation periods including an end of the exhalation period. The pressure decreases from the therapy positive airway pressure to the relief positive airway pressure after the end of the exhalation period.

Abstract: An improvement to a breathing therapy machine to detect and rate occurrences of periodic breathing and to alter the therapy delivered to a user of the device based on the rating.

Abstract: An improvement to a breathing therapy machine to detect and rate occurrences of periodic breathing and to alter the therapy delivered to a user of the device based on the rating.

Abstract: An improved humidification method and apparatus for use with a CPAP type machine in which humidified air is delivered to the patient only during the inhalation phase and non-humidified air is delivered to the patient during the exhalation phase. The invention consists of a valve apparatus to switch from humidified air to non-humidified air and a method of determining when to switch the state of the valve.

Abstract: A PAP device is provided with a programmed controller that is operative to incrementally increase the pressure of air supplied by the PAP device at predetermined time intervals. during a PAP titration.

Abstract: A method for acclimating a CPAP therapy patient to a prescribed pressure while the patient falls asleep. During an initial startup period, the CPAP apparatus applies a therapeutic IPAP pressure to the patient's airway and a lower initial EPAP pressure to the patient's airway. The EPAP pressure is ramped up to the IPAP pressure over a sufficient time for the patient to fall asleep. In a modified embodiment, both the initial IPAP pressure and the initial EPAP pressure are less than the prescribed therapeutic pressure. The IPAP and EPAP pressures are then independently ramped up to the prescribed therapeutic pressure.

Abstract: Zinc alloys containing from 5 to 35% by weight of aluminum and optionally further alloy components are used as constructional zinc for strips and plates.

Abstract: The method for applying a zinc-based anticorrosion layer for reinforced concrete is characterized in that a layer consists of at least two layers, of which the first layer, directly sprayed on the concrete, is made of pure zinc and the second layer sprayed thereon is made of a zinc/alumimum alloy.

Abstract: The method for improving the corrosion resistance of reinforced concrete coated with a thermal spray coat of metals, especially of zinc or zinc alloys, is effected by electrically connecting said spray coat with the armour and additionally coating it with a polyurethane resin which is applied as a low-viscosity solution in organic solvents.