Abstract: A baby bottle nipple including a flexible nipple body, a nipple tip, and a valve. The flexible nipple body has a body wall. The nipple tip has a tip wall that is more rigid than the body wall, a lumen defined through the nipple tip, and an opening disposed at a distal end of the nipple tip, the opening in fluidic communication with the lumen. The valve is disposed within the lumen such that the valve is disposed between an interior of the nipple body and the opening, and the valve has a closed configuration and an open configuration. The valve has a threshold cracking pressure to regulate flow, such that a non-negligible pressure differential is required to urge the valve into the open configuration.

Abstract: A mouthpiece of an oropharyngeal exercise device including a positioning structure used to position a user's mouth on said mouthpiece, and methods for using such a mouthpiece for such exercises. A user's mouth can be positioned such that the apex of a user's tongue is positioned to complete an oropharyngeal exercise. The mouthpiece includes a lip guard. The mouthpiece can be used to guide a user's tongue to a position when completing an oropharyngeal exercise.

Abstract: Surfaces for information security and protection of physical biometrics, such as a fingerprint, is described. Such biometric information recording surface includes a plurality of raised structures that can reproduce a biometric information when a body part containing the biometric information is applied to the biometric metric information recording surface. The reproduced biometric information can be completely removed by applying a liquid to the plurality of raised structures without need to apply an external physical contact.

Abstract: Surfaces for information security and protection of physical biometrics, such as a fingerprint, is described. Such biometric information recording surface includes a plurality of raised structures that can reproduce a biometric information when a body part containing the biometric information is applied to the biometric metric information recording surface. The reproduced biometric information can be completely removed by applying a liquid to the plurality of raised structures without need to apply an external physical contact.

Abstract: A gas turbine engine thermal control apparatus includes at least one annular spray tube having spray holes oriented to impinge thermal control air onto a fillet between an outer casing and a forward thermal control ring and, in a more particular embodiment, into a center of the fillet. The apparatus may include an annular segmented stator shroud attached to the outer casing and circumscribing radial outer blade tips of turbine blades of a turbine rotor. A thermal air distribution manifold encircling a portion of the outer casing includes an annular supply tube connected in fluid supply relationship to plenums of header assemblies. The annular spray tube is connected to at least one of the plenums and may be elongated radially inwardly and axially. Baffles attached to radially outwardly facing surfaces of the panels may be contoured to form exhaust passages having exhaust passage inlets and outlets between the baffles and the panels.

Abstract: An exemplary thermal air exhaust system includes circumferentially extending exhaust passages to exhaust thermal control air from an annular region between an outer casing and a distribution manifold encircling an axially extending portion of the casing after the thermal control air has been sprayed on at least one thermal control ring attached to the outer casing and/or onto the outer casing by spray tubes with spray holes. Baffles attached to base panels of the distribution manifold and contoured to form the exhaust passages between the baffles and base panels. The exhaust passages having exhaust passage inlets formed by radially facing exhaust holes through the baffles and exhaust passage outlets formed by circumferentially facing exhaust passage outlets between the baffles and the base panels. Thermal control air is sprayed on at least one thermal control ring and/or onto the outer casing and then circumferentially exhausted through the exhaust passages.