Patents by Inventor Stephen Ralph Viskochil

Stephen Ralph Viskochil 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: 9472234
    Abstract: An axial field motor and a method of assembling the motor are provided. The hard disk drive includes a spindle motor having a fluid dynamic bearing (FDB) motor hub, a hard disk drive housing and a base insert. The hard disk drive housing houses the spindle motor therewithin and has an upper housing and a base, the base including a first material. The base insert has ferromagnetic properties, includes a second material and has a flat circular bottom portion and an outer circumferential vertical portion. The flat circular bottom portion of the base insert is located between the FDB motor hub and the base to enhance yield strength therebetween and a bottom portion of the FDB motor hub is surrounded by the outer circumferential vertical portion of the base insert to generate preload for the FDB motor hub.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: October 18, 2016
    Assignee: Marvell International Ltd.
    Inventors: Chiew Leong Wong, Ke Gan, Stephen Ralph Viskochil, Eng Teo Ong, Mengjun Liu, Ming Chou Lin, Wuzhong Lin
  • Publication number: 20150228301
    Abstract: An axial field motor and a method of assembling the motor are provided. The hard disk drive includes a spindle motor having a fluid dynamic bearing (FDB) motor hub, a hard disk drive housing and a base insert. The hard disk drive housing houses the spindle motor therewithin and has an upper housing and a base, the base including a first material. The base insert has ferromagnetic properties, includes a second material and has a flat circular bottom portion and an outer circumferential vertical portion. The flat circular bottom portion of the base insert is located between the FDB motor hub and the base to enhance yield strength therebetween and a bottom portion of the FDB motor hub is surrounded by the outer circumferential vertical portion of the base insert to generate preload for the FDB motor hub.
    Type: Application
    Filed: October 14, 2013
    Publication date: August 13, 2015
    Applicant: MARVEL INTERNATIONAL LTD.
    Inventors: Chiew Leong Wong, Ke Gan, Stephen Ralph Viskochil, Eng Teo Ong, Mengjun Liu, Ming Chou Lin, Wuzhong Lin
  • Patent number: 8331059
    Abstract: A bracket for a hard disc drive combining three separate functions, a ramp, a latch and a connector bracket into a single assembly. The bracket assembly, mounted with ramp and latch, secures and seals the electrical connector connecting the flexible printed circuit on the head side of the actuator. Traditionally, latches are on the coil side of the actuator. Moreover, the combination bracket improves manufacturability while reducing overall cost for the disc drive. The assembly can be purchased complete from a supplier.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: December 11, 2012
    Assignee: SAE Magnetics (HK) Ltd.
    Inventor: Stephen Ralph Viskochil
  • Publication number: 20110038074
    Abstract: A moveable ramp arrangement having a traditional front side while the back side has an extended rotational park position used to support the read/write heads while the ramp is in the open position before and during disc installation.
    Type: Application
    Filed: August 17, 2009
    Publication date: February 17, 2011
    Inventors: Stephen Ralph Viskochil, Mark Spencer Seymour
  • Publication number: 20100296198
    Abstract: A bracket for a hard disc drive combining three separate functions, a ramp, a latch and a connector bracket into a single assembly. The bracket assembly, mounted with ramp and latch, secures and seals the electrical connector connecting the flexible printed circuit on the head side of the actuator. Traditionally, latches are on the coil side of the actuator. Moreover, the combination bracket improves manufacturability while reducing overall cost for the disc drive. The assembly can be purchased complete from a supplier.
    Type: Application
    Filed: May 20, 2009
    Publication date: November 25, 2010
    Inventor: Stephen Ralph Viskochil
  • Publication number: 20100259852
    Abstract: This device and method provide a hard disc assembly (HDA) printed circuit board (PCB) with the input/output connector and read/write connector on the same end. This allows the printed circuit board for a hard disc assembly to be about 70% smaller and cheaper than the prior art. This device allows for higher data rates and less noise by allowing shorter signal lines between the read/write connector, the integrated circuits and the input/output connector.
    Type: Application
    Filed: April 14, 2009
    Publication date: October 14, 2010
    Inventor: Stephen Ralph Viskochil