Abstract: An air purifying respirator includes a dual stage fan that sucks outside air in through the filter canisters and then pushes the filtered air on to the user's mask or hood, where excess air escapes. A differential pressure sensor measures the pressure within the passages after the dual stage fan and in the ambient environment to estimate the user's rate of respiration. The microcontroller monitors the estimated rate of respiration, as well as the estimated altitude and its estimated amount of oxygen to calculate a user's filtered air flow need. The microcontroller adjusts the van via a fan controller to the appropriate air flow level. The microcontroller further monitors the battery level, filter life, and for low pressure within the user's mask and operates their respective indicators when problem levels arise. The battery supplies power to the microcontroller, power on/off button, and the dual stage fan.

Abstract: A wearable sensor badge utilizes a carbon nanotube (CNT) sensor array for selective sensing of chemicals from naturally diffused air or by sampling air using a pump/fan for higher sensitivity. An embedded microcontroller monitors the resistance of the sensing elements and by using an advanced detection algorithm the presence of TICs and/or CWAs are identified.

Abstract: A wearable sensor badge utilizes a carbon nanotube (CNT) sensor array for selective sensing of chemicals from naturally diffused air or by sampling air using a pump/fan for higher sensitivity. An embedded microcontroller monitors the resistance of the sensing elements and by using an advanced detection algorithm the presence of TICs and/or CWAs are identified.

Abstract: A wearable sensor badge utilizes a carbon nanotube (CNT) sensor array for selective sensing of chemicals from naturally diffused air or by sampling air using a pump/fan for higher sensitivity. An embedded microcontroller monitors the resistance of the sensing elements and by using an advanced detection algorithm the presence of TICs and/or CWAs are identified.

Abstract: An air purifying respirator includes a dual stage fan that sucks outside air in through the filter canisters and then pushes the filtered air on to the user's mask or hood, where excess air escapes. A differential pressure sensor measures the pressure within the passages after the dual stage fan and in the ambient environment to estimate the user's rate of respiration. The microcontroller monitors the estimated rate of respiration, as well as the estimated altitude and its estimated amount of oxygen to calculate a user's filtered air flow need. The microcontroller adjusts the van via a fan controller to the appropriate air flow level. The microcontroller further monitors the battery level, filter life, and for low pressure within the user's mask and operates their respective indicators when problem levels arise. The battery supplies power to the microcontroller, power on/off button, and the dual stage fan.

Abstract: A power distribution system has an electrical box configured to attach a power cable, a plaster ring releasably mounted to the box and one or more electrical devices installed into the ring. A pre-wired ground extends from a first end physically and electrically connected to a ground terminal on the electrical device. The plaster ring is movable between a closed position proximate the box and an open position distal the box. The pre-wired ground is configured as a lanyard so as to support the plaster ring as a wiring platform in the open position for connecting wires between the power cable and the electrical device or devices.

Abstract: An improved flossing device for cleaning between one's teeth is provided. The flossing device comprises a motor with a rotation drive shaft, a link member, and a motion translator. The link member has a first end and a second end, the first end adapted to receive a removable floss tip member. The motion translator is configured to transfer rotational motion of the drive shaft to the second end of the link member in the form of axial motion. In alternate embodiments, the motion translator transfers at least two types of motion from the group of vibrating, rotating, and axial motion to the second end of the link member.

Abstract: A mounting assembly for mounting a device, such as a loudspeaker enclosure, through an opening in a barrier, such as a ceiling or wall of a room, including a support for positioning on the back side of the barrier adjacent the barrier opening, and at least one spring having a first end attached to the support and a second end configured for freedom of movement. The spring is held in a set position by a set latch on the support until the device is inserted through the opening and selectively engages the spring, whereupon the second end of the spring is released to allow the spring force to act on the device in a manner tending to pull the device further through the opening, toward the back side of the barrier, and into a mounted position relative to the barrier. For dismounting the device, the second end of the spring may be inserted into a retaining latch on the support by selective engagement of the spring by the device.