Patents by Inventor Johnny Soh

Johnny Soh 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).

  • Method for forming a disc stack assembly
    Patent number: 6807721
    Abstract: A method for forming a disc stack assembly suitable for use in a disc drive. A number of discs are loaded onto a spindle motor hub and a disc clamp assembly is installed to secure the discs to the hub. The disc clamp assembly includes an annular retaining ring and a substantially planar, disc shaped clamp plate. The annular retaining ring is secured within an annular ring recess of the spindle motor hub and deforms the clamp plate so that the clamp plate applies an axially directed clamping force to the discs. The disc clamp includes an annular hat flange. The disc stack assembly is preferably balanced by selectively removing material from the hat flange or by attaching a balance weight to the hat flange.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: October 26, 2004
    Assignee: Seagate Technology LLC
    Inventors: Victor ChiSiang Choo, Sen Chai Khew, Niroot Jierapipatanakul, Chee Suan Low, Kok Loong Teng, Kok Tong Soh, Johnny Soh
  • Disc stack assembly having a clamp plate and a retaining ring to clamp a disc to a spindle motor hub
    Patent number: 6760188
    Abstract: A disc stack assembly for use in a disc drive. A spindle motor hub includes an annular ring recess. A disc is clamped to the spindle motor hub by a disc clamp assembly comprising a clamp plate and a retaining ring. The clamp plate includes an inner ring engagement portion, an outer disc engagement portion, and an initial, substantially planar shape in an undeformed state. The retaining ring is secured within the annular ring recess and maintains the clamp plate in a conically deformed state so that the inner ring engagement portion of the clamp plate applies a first moment force against the retaining ring while the outer disc engagement portion of the clamp plate applies a second moment force as an axially directed clamping force upon the disc.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: July 6, 2004
    Assignee: Seagate Technology LLC
    Inventors: Victor ChiSiang Choo, Kok Loong Teng, Niroot Jierapipatankul, Kok Tong Soh, Johnny Soh, Sen Chai Khew, Chee Suan Low
  • Method for forming a disc stack assembly
    Publication number: 20020069509
    Abstract: A method for forming a disc stack assembly suitable for use in a disc drive. A number of discs are loaded onto a spindle motor hub and a disc clamp assembly is installed to secure the discs to the hub. The disc clamp assembly includes an annular retaining ring and a substantially planar, disc shaped clamp plate. The annular retaining ring is secured within an annular ring recess of the spindle motor hub and deforms the clamp plate so that the clamp plate applies an axially directed clamping force to the discs. The disc clamp includes an annular hat flange. The disc stack assembly is preferably balanced by selectively removing material from the hat flange or by attaching a balance weight to the hat flange.
    Type: Application
    Filed: September 24, 2001
    Publication date: June 13, 2002
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Victor ChiSiang Choo, Sen Chai Khew, Niroot Jierapipatanakul, Chee Suan Low, Kok Loong Teng, Kok Tong Soh, Johnny Soh
  • Disc stack assembly having a clamp plate and a retaining ring to clamp a disc to a spindle motor hub
    Publication number: 20020071206
    Abstract: A disc stack assembly for use in a disc drive. A spindle motor hub includes an annular ring recess. A disc is clamped to the spindle motor hub by a disc clamp assembly comprising a clamp plate and a retaining ring. The clamp plate includes an inner ring engagement portion, an outer disc engagement portion, and an initial, substantially planar shape in an undeformed state. The retaining ring is secured within the annular ring recess and maintains the clamp plate in a conically deformed state so that the inner ring engagement portion of the clamp plate applies a first moment force against the retaining ring while the outer disc engagement portion of the clamp plate applies a second moment force as an axially directed clamping force upon the disc.
    Type: Application
    Filed: September 24, 2001
    Publication date: June 13, 2002
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Victor ChiSiang Choo, Kok Loong Teng, Niroot Jierapipatanakul, Kok Tong Soh, Johnny Soh, Sen Chai Khew, Chee Suan Low