Abstract: A ventilation system return register is mountable in a room from with air will flow through the return register. It includes a housing that defines an internal volume through which air can flow, a transition collar configured to attach to the ventilation system duct, an electrical junction box configured to receive an electrical connection and a disinfecting light source electrically connected to the electrical junction box and configured to emit a radiation in a range that destroys microbial contaminants A reflective surface faces the disinfecting light and defines a disinfecting pathway through which air passes when the ventilation system is operating while it prevents the disinfecting light from shining into the room.

Abstract: A fire safety system particularly adapted for commercial kitchen applications provides control of exhaust levels for energy efficiency and intelligently responds to fires or fire risks. In embodiments, systems may provide early warning of fire hazards or impending fires. Embodiments employ probabilistic estimates with alarms that can be canceled. Embodiments employ classifiers that can make use of alarm cancellations as a mechanism for supervised learning.

Abstract: A fire safety system particularly adapted for commercial kitchen applications provides control of exhaust levels for energy efficiency and intelligently responds to fires or fire risks. In embodiments, systems may provide early warning of fire hazards or impending fires. Embodiments employ probabilistic estimates with alarms that can be canceled. Embodiments employ classifiers that can make use of alarm cancellations as a mechanism for supervised learning.

Abstract: A data storage disk drive is provided with a spindle which supports at least one disk having at least one magnetic disk surface to form a spindle assembly for rotation of the disk surfaces about a common axis and a rotary actuator which supports at least one magnetic tranducers for movement about respective disk surfaces. The enclosure includes a base casting and a cover casting. The base casting include predetermined registration surfaces for mounting the spindle and the rotary actuator and having a mating face. The cover casting has a mating face for engaging the base mating face to define the disk drive enclosure for enclosing the spindle, the at least one disk surface, the at least one magnetic transducer and the actuator. The mating faces extend along the length of the disk drive enclosure.

Abstract: A data storage disk drive is provided with a spindle which supports a plurality of disks having at least one magnetic disk surface to form a spindle assembly for rotation of the disk surfaces about a common axis and a rotary actuator which supports magnetic transducers for movement in unison about respective disk surfaces. The disk drive includes a voltage reference tab provided for quick assembly and removal from an actuator comb. The voltage reference tab maintains the magneto-resistive transducers and the magnetic disks at the same reference voltage potential thus minimizing electrical discharge from the transducer to the disk. The voltage reference tab is a copper tab having symmetrical slots about a fastening hole to facilitate the bending operation and to reduce the rate at which heat is conducted during the soldering process. The tab maintains the voltage reference potential between the head and disk through an extension of the flex cable attached to the actuator.