Abstract: A fluid delivery system configuration is described for use with an array of liquid submersion cooled electronic devices disposed in a rack, such as an array of liquid submerged servers. The fluid delivery system allows for the pumping system to generate pressure and flow of the cooling system fluid at slightly higher levels than is necessary for the worst case device/position within the array and to provide for uniformity of delivery pressure and coolant flow to each and every device within the array.

Abstract: A scalable liquid submersion cooling system for electronics. The system includes a plurality of modular system components, such as electronics enclosures, manifolds, pumps, and heat exchanger units. The modular system components permit the liquid submersion cooling system to be scaled up or down to accommodate changing needs. In addition, the modularity of the components facilitates portability, allowing relatively easy transport and set-up/break-down of electronic systems.

Abstract: A fluid delivery system configuration is described for use with an array of liquid submersion cooled electronic devices disposed in a rack, such as an array of liquid submerged servers. The fluid delivery system allows for the pumping system to generate pressure and flow of the cooling system fluid at slightly higher levels than is necessary for the worst case device/position within the array and to provide for uniformity of delivery pressure and coolant flow to each and every device within the array.

Abstract: A scalable liquid submersion cooling system for electronics. The system includes a plurality of modular system components, such as electronics enclosures, manifolds, pumps, and heat exchanger units. The modular system components permit the liquid submersion cooling system to be scaled up or down to accommodate changing needs. In addition, the modularity of the components facilitates portability, allowing relatively easy transport and set-up/break-down of electronic systems.

Abstract: A fluid delivery system configuration is described for use with an array of liquid submersion cooled electronic devices disposed in a rack, such as an array of liquid submerged servers. The fluid delivery system allows for the pumping system to generate pressure and flow of the cooling system fluid at slightly higher levels than is necessary for the worst case device/position within the array and to provide for uniformity of delivery pressure and coolant flow to each and every device within the array.

Abstract: A scalable liquid submersion cooling system for electronics. The system includes a plurality of modular system components, such as electronics enclosures, manifolds, pumps, and heat exchanger units. The modular system components permit the liquid submersion cooling system to be scaled up or down to accommodate changing needs. In addition, the modularity of the components facilitates portability, allowing relatively easy transport and set-up/break-down of electronic systems.

Abstract: A scalable liquid submersion cooling system for electronics. The system includes a plurality of modular system components, such as electronics enclosures, manifolds, pumps, and heat exchanger units. The modular system components permit the liquid submersion cooling system to be scaled up or down to accommodate changing needs. In addition, the modularity of the components facilitates portability, allowing relatively easy transport and set-up/break-down of electronic systems.

Abstract: A fluid delivery system configuration is described for use with an array of liquid submersion cooled electronic devices disposed in a rack, such as an array of liquid submerged servers. The fluid delivery system allows for the pumping system to generate pressure and flow of the cooling system fluid at slightly higher levels than is necessary for the worst case device/position within the array and to provide for uniformity of delivery pressure and coolant flow to each and every device within the array.

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.

Abstract: A disk drive structure is shown which maximizes the axial length available for mounting disks within a predetermined height such as dictated by a form factor. A cast aluminum box frame is used which supports the spindle and actuator assemblies and forms a part of the head disk enclosure in cooperation with a drawn metal cover. The box frame captures the spindle and actuator shafts at each end to ensure maximum overall assembly stiffness and minimize the axial length required by the structure supporting the spindle. The box casting geometry is angled to establish the casting/cover joint region at a location beyond the zone of tangency of the disks nearest the form factor so that only the thinner cover is interposed in the region where the disks most closely approach the form factor. The cover and box frame are sealed and secured to one another by a thin compliant tape that does not contribute stress to the box frame during thermal cycling.

Abstract: A disk drive within the dimensional confines of a form factor can optimize volumetric density by using the full height dimension to house disks, but must thereafter utilize the remaining space for electrical components. The structure shown uses a stack of parallel cards with an interface card on the rear end wall to provide the principal drive control and data circuits exterior of the head-disk assembly (HDA). The motor driver circuitry is mounted on a flat flexible cable and is secured to the front wall at the opposite end of the drive in heat transfer relation. The heat generating motor drive circuits are physically isolated from the data/control circuits by the frame and HDA while some of the printed circuit cards are secured to the frame in a manner that enhances rigidity; the allocation of modules to the cards anticipates flow of data and control signals to minimize the number of connections and signal delays that impair performance.

Abstract: A fastening structure is provided to secure a shaft between parallel walls of a box shaped casting which will secure ans locate the shaft without inducing a distortion of the casting walls. One end of the shaft is secured to the adjacent wall and the other end of the shaft is secured through a wall opening using an annular slug and a deformable washer which is compressed by a bolt attached axially to the shaft end to cause the deformed washer to engage the surfaces defining the wall opening. The uniform axisymmetric expansion of the washer does not affect the position of the shaft and the radial fore secures the shaft end without influencing the structure of the casting.

Abstract: A disk pack assembly for use in a disk drive has disks which are alternately diametrically offset about a spindle axis of rotation. The disks are positioned as a function of their outer edges such that alternate opposite outer edges line up as though they were the outer edges of centered nominal diameter disks. This results in an increase in the number of axial nodal points for potential imbalance moments and reduces the amplitude of associated vibrations. Disk spacers are also alternately diametrically offset about the spindle axis so tht pairs of like components tend to balance each other to minimize potential vibrations.

Abstract: A spindle assembly has a shaft with at least two axially spaced expandable shaft sections. The expandable shaft sections serve to couple the spindle to a bearing assembly having inner races. The expandable shaft sections are expanded elastically and uniformly into retentive contact with the inner races to provide radial and axial support for the spindle assembly.