Abstract:
A piercing mandrel for piercing heated round blocks of metal for the production of seamless pipes, having a piercing mandrel nose and a piercing mandrel main body which can be connected to a mandrel bar. The outer diameter of the piercing mandrel nose is formed in a conically tapering manner in the longitudinal direction towards the piercing mandrel main body in order to increase the durability of the piercing mandrel when used for piercing round blocks of metal, in particular higher-alloyed steel materials which are difficult to work, by means of skew rolling providing a qualitative improvement of the inner surface of the pierced round block and reducing tool costs.
Abstract:
In one aspect, an optical media converter is provided for use within aircraft data networks. In one example, the optical media converter converts electrical doublet signals to optical Manchester signals, and vice versa. In an illustrative example, the optical media converter includes a receiver circuit coupled to a fiber optic port for receiving a Manchester-encoded input signal using an edge-coupled filter that filters out signals not associated with edges within the time-varying input signal Manchester signal. The optical media converter also provides, for example, for high common mode rejection and includes logic to correct for bit-width skew. The optical media converter is well-suited for use in converting doublet signals generated by a serial interface module of a line replaceable unit of an ARINC 629-compatible system into optical Manchester signals for transmission over a fiber optic bus system interconnected by a star coupler.
Abstract:
Methods for forming a stacking interposer are provided that create a more compact and/or reliable interposer cavity. According to one method, a segmentation process that partially cuts a multi-cell, multi-layer PCB panel to a controlled depth along the internal walls/edges of a cavity region with each of the interposer cell sites defined within the PCB panel is used. The material within the cavity region is then removed (by routing) to a controlled depth to form the internal cavity for each interposer cell site. Pillars may then be removed from the PCB panel. As a result of the initial partial cuts of the internal walls of the cavity region, the corners of the cavities may have a square configuration for fitting over the top of a BGA/memory device (which has very square corners).
Abstract:
The present disclosure is directed to visual field replacement unit (FRU) identification and retaining FRU status information of one or more field replaceable units in a host system device when one or more of the field replaceable units is removed from the host system device disconnecting host power to the removed field replaceable unit(s). The one or more field replaceable units may be located on a carrier printed circuit board assembly and the host system device may contain multiple field replaceable units and/or multiple carrier printed circuit board subassemblies. Once the host power is disconnected from the carrier, an alternate power source continues to provide power to keep the FRU indicator illuminated for repairs or replacement. The FRU indicator is illuminated long enough for a service technician to place the carrier on a bench or table top and recognize the failed FRU from the remaining FRUs.
Abstract:
Methods for forming a stacking interposer are provided that create a more compact and/or reliable interposer cavity. According to one method, a segmentation process that partially cuts a multi-cell, multi-layer PCB panel to a controlled depth along the internal walls/edges of a cavity region with each of the interposer cell sites defined within the PCB panel is used. The material within the cavity region is then removed (by routing) to a controlled depth to form the internal cavity for each interposer cell site. Pillars may then be removed from the PCB panel. As a result of the initial partial cuts of the internal walls of the cavity region, the corners of the cavities may have a square configuration for fitting over the top of a BGA/memory device (which has very square corners).
Abstract:
Methods for forming a stacking interposer are provided that create a more compact and/or reliable interposer cavity. According to one method, a segmentation process that partially cuts a multi-cell, multi-layer PCB panel to a controlled depth along the internal walls/edges of a cavity region with each of the interposer cell sites defined within the PCB panel is used. The material within the cavity region is then removed (by routing) to a controlled depth to form the internal cavity for each interposer cell site. Pillars may then be removed from the PCB panel. As a result of the initial partial cuts of the internal walls of the cavity region, the corners of the cavities may have a square configuration for fitting over the top of a BGA/memory device (which has very square corners).
Abstract:
Methods for forming a stacking interposer are provided that create a more compact and/or reliable interposer cavity. According to one method, a segmentation process that partially cuts a multi-cell, multi-layer PCB panel to a controlled depth along the internal walls/edges of a cavity region with each of the interposer cell sites defined within the PCB panel is used. The material within the cavity region is then removed (by routing) to a controlled depth to form the internal cavity for each interposer cell site. Pillars may then be removed from the PCB panel. As a result of the initial partial cuts of the internal walls of the cavity region, the corners of the cavities may have a square configuration for fitting over the top of a BGA/memory device (which has very square corners).
Abstract:
According to an aspect a perch is provided comprising a bracket configured to be attached to a rack-mount component, a bar having a width and an elongated surface, the bar having tabs configured to engage with the bracket, and an attachment screw to secure the bar to the bracket so that the bar extends horizontally across a portion of the component.
Abstract:
Data storage systems may include a chassis with a first end and a second end. One or more fans may be positioned at the first end of the chassis. At least one storage media device may be positioned inside the chassis and behind the at least one fan relative to the first end of the chassis. A carrier including a frame may be coupled to the at least one storage media device, where the frame includes an elongated member extending away from the storage media device toward the first end of the chassis. Other aspects, embodiments, and features are also included.
Abstract:
One feature pertains to an acoustic attenuation device. The acoustic attenuation device comprises a fan assembly, the fan assembly including at least one fan module that directs airflow in at least one direction, wherein the at least one fan module includes a top surface and a bottom surface, a plurality of air deflectors mounted to the top surface and the bottom surface of the at least one fan module, wherein the plurality of air deflectors include a plurality of surfaces, and wherein at least one of the plurality of surfaces is an angled surface that redirects the airflow 90-degrees, and acoustic attenuating foam, wherein the acoustic attenuating foam has a two-dimensional (2-D) surface and is applied to interior surfaces of the plurality of surfaces.