Abstract: Aspects of the present technology comprise a positioning and stabilising structure to hold a seal-forming structure in a therapeutically effective position on a head of a patient. The seal-forming structure may be constructed and arranged to form a seal with a region of the patient's face surrounding an entrance to the patient's airways for sealed delivery of a flow of air at a therapeutic pressure of at least 4 cmH2O with respect to ambient air pressure throughout the patient's respiratory cycle in use. The positioning and stabilising structure may comprise at least one gas delivery tube to deliver the flow of air to the entrance of a patient's airways via the seal-forming structure. The positioning and stabilising structure may comprise an adjustment mechanism for adjustment of a length of the at least one gas delivery tube to enable the positioning and stabilising structure to fit different size heads.

Abstract: A reconfigurable grizzly-type system providing improved field processing of ore, rock, and soil. The system provides reconfigurable screening of rocks, rubble, gravel, and debris from soil based on material size. The system also provides improvements related to efficient storage and transportation.

Abstract: A telephone apparatus comprises a first audio input device, a second audio input device, a first audio output device, and a second audio output device. The telephone apparatus is operative to couple the first audio input device and the first audio output device to a first telephone line. In response to a first signal, the coupling between the first audio input device and the first telephone line is modified, and the second audio input device and the second audio output device are coupled to a second telephone line.

Abstract: A screen assembly comprising a support, a screen comprising peaks and troughs, and a coating on at least a portion of a plurality of the peaks. An apparatus for screening material comprising a frame, a motor mounted to the frame, a screen assembly supported by the frame, a chamber beneath the screen assembly adapted to be placed intermittently at less than atmospheric pressure, a screen formed in an undulating shape comprising a plurality of peaks and troughs, and a coating on at least a portion of a plurality of the peaks.

Abstract: Disclosed within are methods and apparatus for screening a slurry, in which the slurry is vibrated and conveyed across a screen and suction is applied from below the screen. Air, particles and liquid are drawn through openings in the screen and may be conveyed to a separator, where the particles and liquid are then separated from the air.

Abstract: A telephone apparatus comprises a first audio input device, a second audio input device, a first audio output device, and a second audio output device. The telephone apparatus is operative to couple the first audio input device and the first audio output device to a first telephone line. In response to a first signal, the coupling between the first audio input device and the first telephone line is modified, and the second audio input device and the second audio output device are coupled to a second telephone line.

Abstract: The invention relates to a windscreen wiper comprising a squeegee element and a pressure-distributing harness, moulded of a resilient plastics material, comprising one or more pairs of resiliently flexible arms extending in opposite longitudinal directions from a central portion constituting or having attached thereto a wiper arm connector, and including claws at the free ends of the arms and adjacent the central portion which connect with the squeegee element, directly or indirectly, at pressure-distributing spaced locations therealong, said arms being biassed to cause the wiping edge of the squeegee element, when unrestrained, to be curved along its length, and flexing to allow the squeegee element to conform to the curvature of the windscreen over which it wipes.