Abstract: A dual-purpose Oral Appliances having smart sensors and control module for treating sleep apnea and simultaneously straightening the teeth or reducing the bruxism or reducing the TMJ disorder are disclosed. The appliance contains upper and or lower teeth trays with or without air passageway. The appliance can be with or without external housing. The episodes of sleep apnea are reducing by one or combination of several mechanisms such as mandibular advancement (MAD), air stimulation by control of inhaled air flow bypassing the tongue and or micro-holes in air passageways, neuro/muscle electric stimulation of tongue and sleep position training. The sensors located inside or outside of the mouth, measure physiological and or biological and or chemical aspects of the patients. The sensors are connected to control module system consists of battery, microprocessor, and data transmission technologies.

Abstract: An assembly for draining fluid from a sump having a receiver. A plug is adapted for threaded engagement with the receiver, has a transverse outlet arranged for communication with the sump, and is rotatable between: sealed, where flow is inhibited across the outlet; and drain, where fluid from the sump flows across the outlet. A head is rotatably attached to the plug. A limiter between the head and plug operates in: lock, where the head and plug rotate concurrently in a first direction to move the plug from sealed to drain; slip, where the head rotates in a second direction independent of the plug in response to torque acting on the head exceeding a threshold; and limit, where the head and plug rotate concurrently in the second direction in response to torque acting on the head being less than the threshold to move the plug towards sealed.