Abstract: Systems and methods for ensuring medical diagnostic test integrity are disclosed. In particular, systems and methods herein can be used to ensure compliance with testing procedures. Some embodiments provide systems and methods for verifying test results. According to some embodiments, test results can be non-human-readable results that can be interpreted by a computing system.

Abstract: A sleep apnea device with bleed for exhaling including a peripheral wall formed with an interior through passage formed with a proximally facing seat, bleed passages in the wall bypassing the seat and a ball to close against the seat.

Abstract: A sleep apnea cannula harness device including sleep apnea cannula bodies configured with distal radial flanges of predetermined exterior diameters and cylindrical elastic barrel walls defining barrels, the walls having a relaxed configuration with the inside diameters smaller than the predetermined diameters so the peripheral walls will grip the exterior diameters of the cannula bodies. The barrel walls are formed distally with annular cups receiving diametrically enlarged flanges of the cannula bodies and being formed with posteriorly facing clearance notches to confront the patient's upper lip and provide clearance for such upper lip.

Abstract: A sleep apnea device with bleed for exhaling including a peripheral wall formed with an interior through passage formed with a proximally facing seat, bleed passages in the wall bypassing the seat and a ball to close against the seat.

Abstract: A pair of harness barrels configured for receipt in a patient's nasal passages, formed with open passages for receipt for respective valve plugs, and configured exteriorly with radially projecting resilient fins for engaging the walls of the patient's nasal passages and press radially outwardly against the nasal walls for positive sealing and firm gripping.

Abstract: A CPAP device including tubular bodies for insertion in the nasal passages and formed with through-airflow passages. The bodies are formed with interior chambers configured on their distal ends with proximally facing valve seats and at their proximal extremities with retainer stops to retain rounded poppets in the passages to be seated against the respective seats to partially block exhalation of air. The method of the present invention includes selecting a tubular body formed with a distal radial flange circumscribing an inlet and proximally facing seat and formed proximally with a male gland, selecting a cap formed with a female gland for friction fit over the male gland and an outlet configured with radially inwardly projecting stops cooperating to maintain a poppet captive between such stops and the seat, and selecting a harness including a pair of elastic barrels for fitting over the tubular housing end caps when connected together, and including a bridge strap connected therebetween.

Abstract: A device for heat treating metallic webs in-line, in particular for operation with a low-density protective gas, comprises stabilising nozzle systems which stabilise the course of the web and effect heat transfer, primarily by forced convection, in the heating portion and at least in the first portion of cooling. The web is guided in a non-contact process in the treatment portion localized by rollers. The course of the web exhibits a concave curvature (as viewed from above), at least in a partial area in the treatment portion. The area of said concave curvature can be in a fluid which is different from the fluid with which the web is blown in the heating portion and at least in the first portion of the cooling area.

Abstract: A device for heat treating metallic webs in-line, in particular for operation with a low-density protective gas, comprises stabilising nozzle systems which stabilise the course of the web and effect heat transfer, primarily by forced convection, in the heating portion and at least in the first portion of cooling. The web is guided in a non-contact process in the treatment portion localised by rollers. The course of the web exhibits a concave curvature (as viewed from above), at least in a partial area in the treatment portion. The area of said concave curvature can be in a fluid which is different from the fluid with which the web is blown in the heating portion and at least in the first portion of the cooling area.

Abstract: The invention involves providing a plane sheet of glass with recesses by bringing an initially plane sheet of glass, heated to a temperature sufficient for transformation and in partial areas in contact on one side with a negative mould, into engagement on one side with at least one mould cavity of the negative mould whose dimensions correspond to the desired sheet deformation by means of a pressure differential acting upon the sheet, generated by applying a low pressure or partial vacuum and/or gaseous pressure media, such that the respective deformed area/recess of the sheet is surrounded by non-deformed partial areas of the sheet.

Abstract: The invention relates to a device for guiding bands in a suspended manner and for stabilizing bands, preferably wide metal bands, for the purpose of heat treating the same. In the device, the band is blown on both sides with the aid of suspended nozzle sections, and two respective radial ventilators with 360° spiral casings are arranged on the side walls of the device in the vicinity of both sides of the band. The intake openings of the radial ventilators point toward the middle of the device. The axes of the radial ventilators are vertical in relation to the side walls, and the radial ventilators are arranged in such a way that they deliver air into air delivery channels (6) of the length of at least one hydraulic diameter in a manner parallel to the longitudinal direction of the device, that is, in a direction of movement of the band. The air delivery channels (6) are adjacent to the upper casing (8) or the lower casing of the device via a side wall.

Abstract: A nozzle array for levitational guidance of web material. The nozzle array includes a sequence of nozzle areas in the transport direction of the web which are peripherally encompassed at least in part by fanned jets and their width varies in the direction transversely to the web transport direction. The nozzle areas may be equipped with orifice nozzles. Located between the nozzle areas are return flow zones which may be configured as return flow passageways open towards the web, whereby their cross-section is flared in the direction of the edges of the nozzle array. The nozzle areas may be v-shaped relative to their longitudinal axis oriented in the transport direction of the web. Clusters of nozzle areas may be arranged juxtaposed as viewed in the web transport direction.

Abstract: The invention relates to a device for cooling extruded profiles (2) comprising slotted air nozzles (6U, 6O) arranged above and below the extruded profile moving on an exit runway (1) and oriented transversely to the direction of movement of the profile, and water impingement nozzles (12) for impinging the extruded profile with water, wherein the water impingement nozzles are arranged separately from the slotted air nozzles (6U, 6O) in tubes (12) oriented in the direction of movement of the profile such that the impingement portions of the individual water impingement nozzles (12) supplement to achieve a homogenous impingement of the extruded profile (2).

Abstract: An apparatus for levitational guidance of a continuous web of material for the purpose of its heat-treatment is configured of individual zones. The form ducting of the zones has the shape of an U in the vertical longitudinal center section above and below the web in each case, the legs of the U being located parallel to the transport direction of the web. The legs adjacent to the web are equipped on the side facing the web with levitation nozzle ribs or nozzle areas. In the legs facing away from the web, a radial fan is incorporated in each U, the delivery direction of which is directed towards the turn joining the two U legs. Heating means are arranged to advantage in the heating zones in the region between the two legs of the U. Coolers may be incorporated to advantage in the region of the turn joining the two U legs.

Abstract: Wind tunnel having a free jet test section for simulating wind direction fluctuations, principally for the investigation of vehicles, equipped with a nozzle which can be rotated when the wind tunnel is operating, in order to alter the wind flow direction, in which arrangement the nozzle comprises a stationary part and a rotatable front part and the nozzle front part is surrounded by a cylinder surface which is sealed off in the manner of a plug in the end wall of the nozzle prechamber in relation to the test chamber; within the nozzle prechamber, which surrounds the nozzle, a compensating flow can take place upon rotation of the nozzle front part, so that the quality of the jet flow of the wind tunnel is, if at all, only barely noticeably impaired by the rotational movement. In order to investigate flow-acoustic problems with a varying wind direction, the wind tunnel can be equipped with sound deadening and sound attenuating devices as well as an absorbing lining.

Abstract: An apparatus for cooling extruded profile sections comprises nozzles which are arranged above and below an exit path of the extruded profile section and which are formed as air nozzles arranged transversely of the pressing and exit direction of the extruded profile section and having slit-shaped nozzle openings. The air nozzles arranged beneath the exit path have a smaller nozzle slit width than the air nozzles arranged above the exit path and blowing onto the extruded profile section from above; the distance of the lower air nozzles from the extruded profile section is less than the distance of the upper air nozzles from the extruded profile section; and the air nozzles arranged beneath the extruded profile section are offset with respect to the air nozzles arranged above the extruded profile section in each case by half the pitch, measured in the pressing and transport direction of the extruded profile section.

Abstract: A device for removing liquid from the surface of a moving strip (B), more particularly a rolled strip on a roll stand, by means of a gas, more particularly air, blown on to the moving strip (B), is characterized according to the invention in that disposed transversely of the direction (L) in which the strip runs is a slot nozzle (3) which is directed at the strip surface at an angle (.beta.) of 45.degree. to 90.degree. of its jet oppositely to the direction (L) in which the strip runs, the ratio between the distance (h) of the slot nozzle (3) from the moving strip (B) and the width (s) of the slot is in the range h/s=2 to h/s=10, so that the velocity of emergence of the gas jet blown by the slot nozzle (3) on to the strip (B) is in the range of 0.3<Mach<2, and a suctional removal gap (4) is disposed above the strip (B) at a distance of 5 to 25 nozzle distances (h) in the direction (L) in which the strip (B) runs upstream of the line of impingement of the gas jet emerging from the slot nozzle (3).

Abstract: A quench station (14) including apparatus for quenching a heated glass sheet G conveyed by rolls (22) of a roller conveyor (20) is disclosed as including upper and lower sets of blastheads (32) having outlets (34) that are positioned closer to the conveyed glass sheet than the conveyor roll radius R and which are oriented and sized to provide highly efficient quenching such as during heat strengthening or tempering. These blasthead outlets (34) are preferably round and the blastheads (32) are vertically aligned with each other to provide aligned locations (36) of impingement with the oppositely facing surfaces of the glass sheet. In one embodiment, a set of upper roll mimics (38) located above the conveyor rolls (22) in a vertically aligned relationship provide symmetry that results in uniform quenching of both the upper and lower glass sheet surfaces.

Abstract: The invention relates to a device for cooling a laminar material, more particularly a metal strip 2, by liquid nozzles 11a, 11b, 12a, 12b disposed on both sides. The liquid nozzles 11a, 11b, 12a, 12b take the form of full-jet nozzles and so act upon the surface of the material 2 to be cooled by rebounding jets that zones of shooting flow SS are formed around the point of impingement of the individual rebounding jets.

Abstract: The invention relates to an apparatus for the preferable two-dimensional arching of glass sheets heated to the softening temperature comprising a following cooling section, the horizontal guiding of the glass sheets taking place on a plurality of movable transport rods and rollers which form a horizontal surface. The transport rods are provided in two groups which project outwardly from a respective mounting at the two lateral edges of the roller hearth furnace into the roller hearth furnace surface; the two groups of the transport rods are pivotal by a pivot movement via their respective mountings downwardly between linear forming elements, in particular forming rods, the joint upper tangential surface of which corresponds to the contour of the lower side of the arched glass sheet. Alternatively, at least one edge region of some transport rods may be pivoted upwardly to arch glass sheets or panes having one or two bends, for example bus windows or display case panes.

Abstract: The invention is directed to an attachment assembly for securing two membrane strips loosely laid parallel to each other and overlapping with each other. The attachment assembly incorporates a load distribution plate having short and long lateral lever-arm extension means and a bore hole defined in the plate, a fastener screw operatively connected to the load distribution plate through the bore hole, and a fastener screw operatively connected to the load distribution plate through the bore hole. The short and long lateral lever-arm extension means of the plate extend in directions relative to the fastener screw. The short lateral lever arm extension means operates with forces due to the billowing of the roofing membrane so as to uplift a long edge of the load distribution plate and thereby introduce a first force corresponding to a lever arm ratio at the long lateral lever arm extension means at an area opposite to the bore hole.