公开(公告)号：US10827652B2

公开(公告)日：2020-11-03

申请号：US15440644

申请日：2017-02-23

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rohit Dev Gupta ,  Parag Ghate ,  Shailesh R. Nayak

IPC: H05K5/00 ,  H05K7/20 ,  H05K7/14

Abstract: An expandable rack mountable computing device for use in a variety of telecommunications and computing racks comprises a computing device chassis, at least one expandable baffle, at least one biasing mechanism, and at least one expansion mechanism. During installation of the computing device into a rack, the biasing mechanism holds the at least one expandable baffle in a retracted position at least partially inside of the computing device chassis. After installation of the computing device into a rack, the expansion mechanism pushes the at least one expandable baffle into a retracted position at least partially outside of the computing device chassis.

公开(公告)号：US10813248B2

公开(公告)日：2020-10-20

申请号：US16184550

申请日：2018-11-08

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rohit Dev Gupta ,  Robert Gregory Twiss

IPC: H05K7/20

Abstract: In one embodiment, an apparatus includes a fan for cooling electronics within a chassis, the fan comprising a rotor with a plurality of fan blades connected thereto for generating an axial airflow during operation of the fan, a sensor for detecting failure of the fan, and an airflow blocking device positioned at an exhaust side of the fan and configured to prevent airflow through the fan upon detection of the fan failure, wherein the airflow blocking device is stowed in a position removed from a path of the axial airflow generated by the fan during operation of the fan. A method for preventing airflow recirculation at a failed fan is also disclosed herein.

公开(公告)号：US10761281B1

公开(公告)日：2020-09-01

申请号：US16428550

申请日：2019-05-31

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rohit Dev Gupta ,  Joel Richard Goergen ,  Chezhian Barathi

IPC: G02B6/42 ,  G02B6/38 ,  H01R13/64 ,  H01R13/659 ,  H04B10/40 ,  H05K7/20

Abstract: In one embodiment, a method includes identifying optical transceivers installed in optical module ports at a network device based on input received at electrical interfaces at the network device, identifying at least one optical module port without an optical transceiver installed, determining if a plug is inserted into the optical module port, wherein an electrical signal indicates insertion of the plug into the optical module port, and raising an alarm if the optical module port is open. Insertion of the plug into the optical module port reduces airflow bypass, electromagnetic interference leakage, and contamination without the optical transceiver installed in the optical module port. The plug is also disclosed herein.

公开(公告)号：US20200221596A1

公开(公告)日：2020-07-09

申请号：US16819399

申请日：2020-03-16

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rohit Dev Gupta ,  Joel Richard Goergen ,  Sarma VMK Vedhanabhatla ,  Damaruganath Pinjala ,  Jatin Kohli ,  Robert Gregory Twiss

IPC: H05K7/14 ,  H05K7/20 ,  H05K7/02

Abstract: In one embodiment, a method includes receiving an indication at a modular electronic system of initiation of online removal for a module removably inserted into a slot of the modular electronic system, increasing a fan speed at the modular electronic system before the module is removed, monitoring an internal temperature at the modular electronic system, and providing an indication that the module is ready for removal upon reaching a specified cooling state at the modular electronic system based on the temperature monitoring. A panel on an adjacent module is opened and extends into the slot upon removal of the module to substantially block airflow bypass from the slot and maintain cooling within the modular electronic system. An apparatus and logic are also disclosed herein.

公开(公告)号：US20190308121A1

公开(公告)日：2019-10-10

申请号：US15945399

申请日：2018-04-04

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rohit Dev Gupta ,  Shailesh R. Nayak ,  Arjun Jayaprakash

IPC: B01D46/00 ,  B01D53/26 ,  H05K7/20 ,  H05K7/18

Abstract: In one embodiment, an apparatus includes a frame for mounting in a rack in a position adjacent and external to a network device supported by the rack and a filter module for holding a filter for filtering air entering an air inlet of the network device. The frame comprises an opening for receiving the filter module and positions the filter adjacent to the air inlet of the network device when installed on the rack.

公开(公告)号：US20190008066A1

公开(公告)日：2019-01-03

申请号：US15639968

申请日：2017-06-30

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rohit Dev Gupta ,  Joel Richard Goergen ,  Sarma VMK Vedhanabhatla ,  Damaruganath Pinjala ,  Jatin Kohli ,  Robert Gregory Twiss

IPC: H05K7/14 ,  H05K7/20 ,  H05K7/02

Abstract: In one embodiment, a method includes receiving an indication at a modular electronic system of initiation of online removal for a module removably inserted into a slot of the modular electronic system, increasing a fan speed at the modular electronic system before the module is removed, monitoring an internal temperature at the modular electronic system, and providing an indication that the module is ready for removal upon reaching a specified cooling state at the modular electronic system based on the temperature monitoring. A panel on an adjacent module is opened and extends into the slot upon removal of the module to substantially block airflow bypass from the slot and maintain cooling within the modular electronic system. An apparatus and logic are also disclosed herein.

公开(公告)号：US20180285222A1

公开(公告)日：2018-10-04

申请号：US15643661

申请日：2017-07-07

Applicant: Cisco Technology, Inc.

Inventor： Rohit Dev Gupta ,  Joel R. Goergen ,  Jatin Kohli ,  Manigandan Boopalan

IPC: G06F11/20 ,  G06F11/32 ,  G06F11/30

CPC classification number: G06F11/2028 ,  G06F11/3006 ,  G06F11/3024 ,  G06F11/3055 ,  G06F11/3058 ,  G06F11/325 ,  G06F11/328 ,  G06F2201/805 ,  G06F2201/86 ,  H05K7/20836

Abstract: In one embodiment, a device in a modular networking rack determines an online insertion and removal (OIR) time for a particular device module of a plurality of device modules contained within the modular networking rack. The device determines an OIR time for the plurality of device modules based on the OIR time for the particular device module and provides an indication of the OIR time for the plurality of device modules for display to a user.

公开(公告)号：US20180252335A1

公开(公告)日：2018-09-06

申请号：US15487148

申请日：2017-04-13

Applicant: Cisco Technology, Inc.

Inventor： Joel Richard Goergen ,  Rohit Dev Gupta ,  Prashanth Pavithran ,  Manigandan Boopalan ,  Luca Della Chiesa

IPC: F16L3/015 ,  H02G3/04 ,  H05K7/02

Abstract: The present technology provides minimal touch cable guides for rack-mounted devices. The minimal touch cable guides disclosed herein provide structures for routing cables from field replaceable units installed in a rack mounted device in such a way that cables of different types are not crossed and provides a mechanism for adjusting installed cabling to permit access to otherwise obscured field replaceable units. Such adjustment of cabling is provided in a controlled manner that does not impair the performance the installed cabling.

公开(公告)号：US20180242477A1

公开(公告)日：2018-08-23

申请号：US15440644

申请日：2017-02-23

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rohit Dev Gupta ,  Parag Ghate ,  Shailesh R. Nayak

IPC: H05K7/20 ,  H05K7/14

Abstract: An expandable rack mountable computing device for use in a variety of telecommunications and computing racks comprises a computing device chassis, at least one expandable baffle, at least one biasing mechanism, and at least one expansion mechanism. During installation of the computing device into a rack, the biasing mechanism holds the at least one expandable baffle in a retracted position at least partially inside of the computing device chassis. After installation of the computing device into a rack, the expansion mechanism pushes the at least one expandable baffle into a retracted position at least partially outside of the computing device chassis.