Abstract: A user interface for delivering CPAP includes a forehead adapted with a deformable attachment between the interface and the support. In the preferred embodiment the interface is a mask which substantially seals against the face of the user without substantial pressure thereto and delivers said gases to the nasal cavity and/or oral cavity and/or throat.

Abstract: A device for directing hazardous gases away from a pipe that is emitting the gases, the device including a split column having a first opening and a second opening at opposing ends of the split column, the split column further including a split that passes through the tubular section and that extends from the first opening to the second opening and a third opening in the split column that is located between the first opening and the second opening.

Abstract: A direct sidewall vent system between a fuel-burning appliance in a first space and an external atmosphere, through a wall between the first space and external atmosphere. The direct sidewall vent system has a wall assembly that defines a first passage for communicating combustion gas generated through operation of the fuel-burning appliance to a first outlet through which the combustion gas is communicated to the external atmosphere. The wall assembly further defines a second passage for communicating makeup air from the external atmosphere to the fuel-burning appliance in the first space. The direct sidewall vent system further has an external portion that is situated within the external atmosphere and at which the first outlet is located. The external portion of the direct sidewall vent system has a top, a bottom, and spaced sides.

Abstract: A cap capable of being secured to a chimney or flue of either air cooled or non-air cooled type and including a base, an annular collar member for insertion into a chimney or flue, an annular shaped mesh member that is supported from the base; a top supported on the annular shaped mesh member, means supported from an outer surface of the collar member below the base and forming a ledge for support of the collar member from the chimney or flue, and an over lap joint including a lower segment that extends substantially longitudinal of the collar member and a top segment that extends diagonal to the lower segment enabling compression of the diameter of the collar member.

Abstract: A chimney termination cap is provided with a body having a perimeter sidewall with a lower region adapted to be mounted to a chimney. The body has an opening for venting the chimney. A lid is mounted to a top of the body. A tray is mounted within the body for collecting precipitation. One of the body and the tray includes a drainage aperture for draining the precipitation from the tray. In one embodiment, the chimney termination cap includes an integrated slip-sleeve configured to receive a chimney flue or vent pipe.

Abstract: This chimney uses the shape of its exterior housing and internal baffles to improve the draw of fireplace and stove chimneys while providing protection against precipitation and foreign objects entering the chimney. It has no moving parts, but the baffle design and exterior shape causes wind from any direction to enter at the bottom and exit from the top enhancing the chimney's draw by creating a vinturi affect. The side baffles shape diverts precipitation from the chimney while the center baffle has a precipitation collection and diversion system. This design avoids down drafts and allows the chimney to function as intended even in high winds.

Abstract: The present invention is directed to a sealed vent terminal assembly intended for use in association with high-efficiency oil fired furnaces or boilers. The terminal assembly of the present invention is designed to simultaneously flow outside combustion air to the furnace or boiler and eject combustion gases discharged from the furnace or boiler.

Abstract: A process for manufacturing a lithographic printing plate support made of aluminum or an aluminum alloy, in which the surface of the support is mechanically roughened by graining it with a brush comprising bristles which have a bending elastic modulus of 10,000 to 40,000 kg/cm.sup.2 and a nerve of 500 g or less per bristle, whereby generation of defective products due to defects such as scratching which aluminum itself has can be prevented and a lithographic printing plate support having scumming reduction even on squeezing water out can be provided.

Abstract: A chimney draft inducer installed on a chimney flue having a feed tube extending from the chimney flue with a plurality of vortex stabilizers extending radially from the feed tube to a cylindrical negative pressure plenum member forming a plurality of quasi-venturi chambers therebetween with a conical member positioned above the chimney flue in contact with the vortex stabilizers having an opening between such conical member and feed tube, the conical member having a plurality of arches formed in its bottom, each arch coming to a pointed tip with such pointed tips positioned within each of the quasi-venturi chambers such that air passing down the conical member speeds up when passing by the pointed tips, forming dual air vortexes of low pressure to provide a suction at the chimney flue opening to improve the draft of the chimney.

Abstract: A power vent system is provided for exhausting hot combustion gas by-products. The system includes a plenum or mixing chamber, a conduit system and an air aspirating discharge assembly. Negative pressure is developed in the plenum by a blower therein; ambient air is drawn into the plenum from the atmosphere and mixed with the hot flue gases. The resulting cooled mixture is exhausted through the conduit system under pressure and, at the discharge assembly, additional ambient air is mixed with the mixture by a discharge assembly venturi effect which also accelerates the gases away from the discharge assembly.