Abstract: Described herein are various embodiments of a valve that may be opened and closed using a thixotropic or “stress yield” material, or other material that temporarily changes phase upon application of energy to the material. More particularly, some embodiments may include a valve that is opened and closed using a granular gel that is a temporary phase change material.

Abstract: A diffuser element for use over a vent opening of a breathing assistance apparatus. In some configurations, the diffuser element is formed by knitting or weaving one or more threads together into an interlocking pattern. In some configurations, the diffuser pad has a first surface and an opposing second surface and at least the first surface includes a surface texture. Arrangements for coupling the diffuser element to a structure that defines or carries the vent are also disclosed.

Abstract: A mission elapsed time (MET) unit for using during outer space missions. The MET unit comprises a MET core, a crystal oscillator (XO) operably connected to the MET core, an external pulse per second (XPPS) source generating an XPPS input signal and operably connected to the MET core, a synchronization logic and a “Blackout Limit” register. Both the synchronization logic and the “Blackout Limit” register are arranged between the XPPS source and the MET core so that each of the synchronization logic and the “Blackout Limit” register is operably connected to both the XPPS source and the MET core. The MET core includes a sub-seconds counter keeping track of time over scales of less than one second and a seconds counter keeping track of time over scales of larger than one second.

Abstract: A diffuser element for use over a vent opening of a breathing assistance apparatus. In some configurations, the diffuser element is formed by knitting or weaving one or more threads together into an interlocking pattern. In some configurations, the diffuser pad has a first surface and an opposing second surface and at least the first surface includes a surface texture. Arrangements for coupling the diffuser element to a structure that defines or carries the vent are also disclosed.

Abstract: A diffuser element for use over a vent opening of a breathing assistance apparatus. In some configurations, the diffuser element is formed by knitting or weaving one or more threads together into an interlocking pattern. In some configurations, the diffuser pad has a first surface and an opposing second surface and at least the first surface includes a surface texture. Arrangements for coupling the diffuser element to a structure that defines or carries the vent are also disclosed.

Abstract: Headgear for a respiratory interface comprising multiple separate sections of material joined to form the headgear and different levels of resilient extensibility or stretchability in at least four different parts or straps of the headgear.

Abstract: Headgear for a respiratory interface includes multiple separate sections of material joined to form the headgear and different levels of resilient extensibility or stretchability in at least four different parts or straps of the headgear.