Abstract: A plenum assembly for use in a data storage device to direct and filter recirculating currents established by high speed rotation of a recording disc. The plenum assembly includes a top plate and a partitioning wall which projects from the top plate to form opposing, longitudinally extending first and second chambers. A first portion of the recirculating currents is directed along the first chamber and a separate, second portion of the recirculating currents is directed along the second chamber. A recirculation filter transversely extends across the first and second chambers and intersects the partitioning wall so that the respective first and second portions of the recirculating currents concurrently pass through adjacent sides of the recirculation filter before exiting the plenum assembly and merging into a combined set of recirculating currents.

Abstract: A plenum assembly for use in a data storage device to direct and filter recirculating currents established by high speed rotation of a recording disc. The plenum assembly includes a top plate and a partitioning wall which projects from the top plate to form opposing, longitudinally extending first and second chambers. A first portion of the recirculating currents is directed along the first chamber and a separate, second portion of the recirculating currents is directed along the second chamber. A recirculation filter transversely extends across the first and second chambers and intersects the partitioning wall so that the respective first and second portions of the recirculating currents concurrently pass through adjacent sides of the recirculation filter before exiting the plenum assembly and merging into a combined set of recirculating currents.

Abstract: An improved actuator assembly for a disc drive, the actuator assembly having an E-block which at a proximal end supports an array of read/write heads in reading and writing data relationship to a plurality of spinning data discs which create air currents that convectively cool the E-block, the E-block supporting at a distal end an electrical coil which interacts with a magnet assembly of the disc drive to selectively position the actuator assembly in response to control voltages introduced to the electrical coil. A portion of the control voltage is dissipated as heat energy by the electrical coil, and a heat transfer plate is provided to thermally connect the electrical coil and the E-block to provide conductive heat transfer of the heat energy to the E-block which acts as a heat sink for the electrical coil.

Abstract: A disc drive assembly having a pair of disc packs supported for rotation by independent spindle motors and a single actuator having dual arrays of actuator arms supporting read/write heads for each disc pack. The actuator has dual opposing actuator coils which interact with dual opposing magnet assemblies so that a controlled voltage to the actuator coils creates a rotating force having translational vectors that act radially on the actuator and are opposingly disposed to stabilize the actuator.

Abstract: An improved actuator assembly for a disc drive, the actuator assembly having an E-block which at a proximal end supports an array of read/write heads in reading and writing data relationship to a plurality of spinning data discs which create air currents that convectively cool the E-block, the E-block supporting at a distal end an electrical coil which interacts with a magnet assembly of the disc drive to selectively position the actuator assembly in response to control voltages introduced to the electrical coil. A portion of the control voltage is dissipated as heat energy by the electrical coil, and a heat transfer plate is provided to thermally connect the electrical coil and the E-block to provide conductive heat transfer of the heat energy to the E-block which acts as a heat sink for the electrical coil.

Abstract: An energy producing apparatus which utilizes a vertically disposed silo formed within the earth. The silo is completely filled with water. A fluid cylinder, which contains a movable piston is to be submergible to the bottom of the silo and then returned back to the surface of the earth. During the submerging process, water is to be caused to enter a portion of the fluid cylinder moving the piston against pressurized gas. Upon the return of the fluid cylinder to the surface of the earth, this pressurized water is to be extracted and utilized to produce work within a work producing device such as a turbine.