Patents by Inventor Brett R. Herdendorf

Brett R. Herdendorf has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11966617
    Abstract: A data storage blade includes a plurality of data storage cartridges, with each of the plurality of data storage cartridges comprising at least one data storage medium. The data storage blade also includes shared drive electronics (SDE) external to the plurality of data storage cartridges. The SDE is configured to control data access operations on different data storage cartridges of the plurality of data storage cartridges. The data storage blade further includes a controller-override mechanism activatable to disable communication between the SDE and the plurality of data storage cartridges.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: April 23, 2024
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian, Kevin Lee Van Pelt
  • Publication number: 20240112711
    Abstract: A data storage apparatus is presented that includes a well structure comprising a suspension medium, and a magnetic particle disposed in at least a portion of the well structure. A control system is configured to represent a data state corresponding to a positioning of the magnetic particle within the well structure, the magnetic particle moved responsive to an applied field and a present material state of the well structure. Various addressable arrays of well structures and associated control elements can be established to form data storage devices.
    Type: Application
    Filed: October 3, 2022
    Publication date: April 4, 2024
    Inventors: Riyan Alex Mendonsa, Brett R. Herdendorf, Jon D. Trantham
  • Patent number: 11948606
    Abstract: A hard disk drive including a base deck with a base member and side walls extending from the base member. The side walls include a non-metallic material and include a structure made from the non-metallic material. The structure is arranged to dampen vibration. The side walls can be formed using an additive manufacturing process.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: April 2, 2024
    Assignee: Seagate Technology LLC
    Inventors: Riyan Alex Mendonsa, Brett R. Herdendorf, Anil J. Reddy, Iraj Jabbari
  • Patent number: 11948612
    Abstract: A data storage device includes a data storage disc, an arm, a head, a rotary actuator, and an elevator. The disc has a read/write surface defining an x-y plane. The arm includes a load beam. The head is supported by the load beam, and the head is configured to interact with the read/write surface. The rotary actuator is configured to move a first portion of the arm about a first pivot axis in the x-y plane. The elevator is configured to move the arm in a z direction relative to a vertical surface and is configured to frictionally engage the vertical surface to hold the arm at a z direction position while allowing the rotary actuator to move the first portion of the arm about the first pivot axis. In another aspect, an apparatus includes a stack block, first and second clamp arm assemblies, and first and second piezoelectric actuators.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: April 2, 2024
    Assignee: Seagate Technology LLC
    Inventors: Riyan Alex Mendonsa, Brett R Herdendorf, Krishnan Subramanian
  • Patent number: 11875830
    Abstract: A data storage device (DSD) includes a base-deck, a disc above the base-deck, and a shaft extending perpendicular from the base-deck. The DSD also includes a head stack assembly (HSA) including a head gimbal assembly having a load beam and a head at a first end of the HSA. The head interacts with a surface of the disc. The HSA also includes a second end movably mounted on the shaft. The DSD additionally includes an elevator that linearly moves the HSA along the shaft to adjust a distance between the load beam and the surface of the disc in response to receiving a feedback signal associated with the interaction of the head with the surface of the disc. The feedback signal is one of a plurality of feedback signals employed by the elevator to adjust the distance between the load beam and the surface of the disc.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: January 16, 2024
    Assignee: Seagate Technology LLC
    Inventors: Matthew Aaron Carper, Anil J. Reddy, Brett R. Herdendorf, Riyan Alex Mendonsa
  • Publication number: 20240005952
    Abstract: A data storage apparatus includes a disk storage region in which magnetic disks are stored. A carrier mechanism picks up one or more of the magnetic disks and moves them to and from the disk storage region. A data access device of the apparatus includes a structure to receive the one or more magnetic disks from the carrier mechanism and spins the magnetic disks in place. One or more actuator arms are operable to move across a same surface of the one or more magnetic disks. Two or more read transducers are mounted to the actuator arms and operable to simultaneously read from the same surface of the one or more magnetic disks. Two or more write transducers are mounted to the actuator arms and operable to simultaneously write to the same surface of the one or more magnetic disks.
    Type: Application
    Filed: June 21, 2023
    Publication date: January 4, 2024
    Inventors: Riyan Alex Mendonsa, Krishnan Subramanian, Brett R. Herdendorf, Jon D. Trantham, Mehmet Fatih Erden
  • Patent number: 11842753
    Abstract: A system includes a library compartment, a player and a gas generator. The library compartment houses a plurality of data storage disks. The player is external to the library compartment and comprises a head that is configured to interact with at least one of the plurality of data storage disks. The gas generator is fluidly connected to the player. An embodiment includes a partition between the library compartment and player, the partition including a selectively openable interlock. In an embodiment, the player has a negative fluid pressure relative to the library compartment. A method of controlling an environment in a disk player is also described. The method includes detecting a composition of a fluid environment in the disk player and detecting a pressure of the fluid environment in the disk player.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: December 12, 2023
    Assignee: Seagate Technology LLC
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian, Shawn A. Ruden
  • Patent number: 11817125
    Abstract: A brake crawler assembly configured for vertically moving an arm assembly along a pivot member in a multi-disk hard disk drive is provided. The brake crawler assembly includes a first clamp, including a first recess within which is disposed a first actuator and a first clamp calibration element. The first clamp calibration element includes a first clamp calibration access portion adapted to be accessible externally of the first clamp and adapted to receive a first external adjustment and a first clamp internal compression modifier adapted to modify a force exerted by the first actuator on the first recess, responsive to the received first external adjustment, wherein the first clamp is configured to selectively engage the pivot member at a position along the pivot member relative to at least one disk of the multi-disk hard disk drive based on the modified force exerted.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: November 14, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian
  • Publication number: 20230340684
    Abstract: A method for depositing a material from a solution to a surface is provided. The method includes depositing, through a deposition channel of a material depositor, the solution in a rich state to the surface, wherein the solution in the rich state includes an initial concentration of the material, onto a surface, applying a predefined electrical output, by the material depositor, through the deposited solution to adhere the material to the surface, and to yield the solution in a depleted state wherein the solution in the depleted state contains a different concentration of the material from the rich solution, and removing, through a removal channel in the material depositor, the deposited solution in the depleted state. The material depositor includes a hydrophilic region defined by a hydrophilic surface through which the material depositor conducts the depositing and the removing and a hydrophobic barrier circumscribing the hydrophilic region.
    Type: Application
    Filed: April 24, 2023
    Publication date: October 26, 2023
    Inventors: Thomas Young CHANG, Kim Yang LEE, Mark T. KIEF, Riyan Alex MENDONSA, Brett R. HERDENDORF
  • Patent number: 11790946
    Abstract: The presently disclosed technology is directed to maximizing cleanliness, reliability, and space efficiency within a jukebox-style HDD, while minimizing overall cost of the HDD. In an effort to reduce the movement of a robotic arm assembly, cassettes within a jukebox-style HDD may be configured to be magnetically repositionable to replace some of the movement of the robotic arm assembly, without adding another significant source of potential mechanical failure within the HDD enclosure. Further, the overall number of moving parts is reduced, which may improve reliability of the HDD, as well as cleanliness within the HDD enclosure.
    Type: Grant
    Filed: February 4, 2022
    Date of Patent: October 17, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian
  • Patent number: 11783858
    Abstract: A device disclosed herein includes an upper shape memory alloy (SMA) wire, a lower SMA wire, a flexure having an opening, and a spring configured within the flexure opening, wherein the lower SMA wire, and the flexure are attached at one end to an anchor and at another end to a pin.
    Type: Grant
    Filed: January 5, 2022
    Date of Patent: October 10, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian
  • Publication number: 20230301115
    Abstract: The described technology provides implementations of a mechanical magnetoresistance device. The mechanical magnetoresistance device includes a first magnetoresistive well, the magnetoresistive well including at least one magnetic element and a suspension substrate, wherein the at least one magnetic element is suspended in the suspension substrate. The mechanical magnetoresistance device further includes a first conductive element in electronic communication with a first portion of the first magnetoresistive well, a second conductive element in electronic communication with a different second portion of the first magnetoresistive well, wherein the first conductive element is in electronic communication with the second conductive element via the first magnetoresistive well.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 21, 2023
    Inventors: Riyan Alex MENDONSA, Brett R. HERDENDORF, Krishnan SUBRAMANIAN, Mark T. KIEF, Jon D. TRANTHAM
  • Patent number: 11756579
    Abstract: A data storage device includes a ramp configured to support at least one head in the data storage device, and a movement mechanism coupled to the ramp and configured to move the ramp from a first position to a second position by at least one of expansion or contraction of at least a portion of the movement mechanism. The data storage device further includes a ramp motion control module operably coupled to the movement mechanism. The ramp motion control module is configured to provide the movement mechanism with a first control signal that causes the movement mechanism to move the ramp from the first position to the second position. The data storage device additionally includes a latch configured to hold the ramp.
    Type: Grant
    Filed: April 15, 2022
    Date of Patent: September 12, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian
  • Publication number: 20230253013
    Abstract: The presently disclosed technology is directed to maximizing cleanliness, reliability, and space efficiency within a jukebox-style HDD, while minimizing overall cost of the HDD. In an effort to reduce the movement of a robotic arm assembly, cassettes within a jukebox-style HDD may be configured to be magnetically repositionable to replace some of the movement of the robotic arm assembly, without adding another significant source of potential mechanical failure within the HDD enclosure. Further, the overall number of moving parts is reduced, which may improve reliability of the HDD, as well as cleanliness within the HDD enclosure.
    Type: Application
    Filed: February 4, 2022
    Publication date: August 10, 2023
    Inventors: Brett R. HERDENDORF, Riyan Alex MENDONSA, Krishnan SUBRAMANIAN
  • Patent number: 11651784
    Abstract: A data storage device includes a base, a shaft that extends perpendicular from the base, and a head stack assembly (HSA) having a first end to which a head is coupled and a second end that is movably mounted on the shaft. The data storage device also includes either a first actuator assembly or a second actuator assembly. The first actuator assembly includes a first coil-permanent magnet assembly that rotatably moves the HSA about the shaft, and a second coil-permanent magnet assembly that serves as a first elevator to linearly move the HSA along the shaft. The second actuator assembly includes a third coil-permanent magnet assembly that rotatably moves the HSA about the shaft, and a second elevator that linearly moves the HSA along the shaft and also moves a data storage device ramp in unison with the HSA.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: May 16, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R. Herdendorf, Riyan A. Mendonsa, Wolfgang Rosner, Jonathan Lewis Kemnitz, Krishnan Subramanian, Kurt LeRoy Erickson
  • Publication number: 20230054813
    Abstract: A system includes a library compartment, a player and a gas generator. The library compartment houses a plurality of data storage disks. The player is external to the library compartment and comprises a head that is configured to interact with at least one of the plurality of data storage disks. The gas generator is fluidly connected to the player. An embodiment includes a partition between the library compartment and player, the partition including a selectively openable interlock. In an embodiment, the player has a negative fluid pressure relative to the library compartment. A method of controlling an environment in a disk player is also described. The method includes detecting a composition of a fluid environment in the disk player and detecting a pressure of the fluid environment in the disk player.
    Type: Application
    Filed: June 22, 2022
    Publication date: February 23, 2023
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian, Shawn A. Ruden
  • Publication number: 20230049708
    Abstract: A microfluidic system includes a fluidic platform having a surface, a first liquid disposed onto the fluidic platform, and a droplet disposed onto the first liquid. The first liquid has a first temperature. The droplet has a second temperature higher than the first temperature so that the droplet is levitated above the first liquid by a cushion of vapor of the first liquid. In an embodiment, a device is configured to provide a magnetic field that has variable strength across the surface. A location of a magnetic droplet relative to the surface area is affected by the magnetic field. A method includes providing a fluidic platform, providing a magnetic field, introducing a first liquid onto the fluidic platform, introducing a first magnetic droplet onto the first liquid, and locally varying the magnetic field.
    Type: Application
    Filed: July 21, 2022
    Publication date: February 16, 2023
    Inventors: Riyan Alex Mendonsa, Gemma Mendonsa, Brett R. Herdendorf
  • Publication number: 20230032300
    Abstract: A data storage blade includes a plurality of data storage cartridges, with each of the plurality of data storage cartridges comprising at least one data storage medium. The data storage blade also includes shared drive electronics (SDE) external to the plurality of data storage cartridges. The SDE is configured to control data access operations on different data storage cartridges of the plurality of data storage cartridges. The data storage blade further includes a controller-override mechanism activatable to disable communication between the SDE and the plurality of data storage cartridges.
    Type: Application
    Filed: July 28, 2021
    Publication date: February 2, 2023
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian, Kevin Lee Van Pelt
  • Publication number: 20230005502
    Abstract: A data storage device includes a data storage disc, an arm, a head, a rotary actuator, and an elevator. The disc has a read/write surface defining an x-y plane. The arm includes a load beam. The head is supported by the load beam, and the head is configured to interact with the read/write surface. The rotary actuator is configured to move a first portion of the arm about a first pivot axis in the x-y plane. The elevator is configured to move the arm in a z direction relative to a vertical surface and is configured to frictionally engage the vertical surface to hold the arm at a z direction position while allowing the rotary actuator to move the first portion of the arm about the first pivot axis. In another aspect, an apparatus includes a stack block, first and second clamp arm assemblies, and first and second piezoelectric actuators.
    Type: Application
    Filed: September 12, 2022
    Publication date: January 5, 2023
    Inventors: Riyan Alex Mendonsa, Brett R. Herdendorf, Krishnan Subramanian
  • Patent number: 11545181
    Abstract: A data storage system include a disk drive having a rotating ramp assembly that may be moved between an engaged and disengaged position. The rotating ramp assembly may include a ramp extension that is not disposed in overlapping relation to a data storage disk location in the drive when in the disengaged position. However, in the engaged position, the ramp extension may overhang a portion of the data storage disk location. In turn, the head extension may include a ramp surface that allows a head assembly to move to a head parking surface when the rotating ramp assembly is in the engaged position. IN turn, the rotating ramp assembly may be rotated while maintaining the head assembly on the head parking surface, which may be arcuate and extend about at least a portion of the rotating ramp assembly.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: January 3, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Brett R. Herdendorf, Riyan Alex Mendonsa, Krishnan Subramanian