Patents Assigned to Information Storage Systems, Inc.
  • Disc drive with rotary access mechanism
    Patent number: 4019205
    Abstract: A disc drive for mounting a plurality of disc packs, with head access mechanism for the packs being driven by a single rotary drive.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: April 19, 1977
    Assignee: Information Storage Systems, Inc.
    Inventors: Kent A. Salmond, Ivan Pejcha
  • Coarse and fine control for position servo
    Patent number: 4006394
    Abstract: A closed loop servo system for positioning a head relative to a magnetic recording element wherein track crossings are normally utilized to generate a feedback signal to the servo for positioning the head and wherein for a precise indication of head positioning between track crossings the velocity of movement of the head is integrated and fed into the servo system to provide a fine position signal.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: February 1, 1977
    Assignee: Information Storage Systems, Inc.
    Inventors: John Cuda, Frank J. Sordello
  • Head loading and unloading assembly for a magnetic disc drive having a rotary actuator
    Patent number: 3984873
    Abstract: A head loading and unloading assembly for a magnetic disc drive having rotary actuated read/write heads wherein the assembly includes a stationary member positioned adjacent the magnetic disc with means for contacting and lifting the heads off of the disc surface while permitting rotary movement of the heads to remove them from the proximity of the discs.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: October 5, 1976
    Assignee: Information Storage Systems, Inc.
    Inventor: Ivan Pejcha
  • Method of manufacturing a spindle assembly for a disc drive
    Patent number: 3938192
    Abstract: This invention relates to a method of manufacturing a spindle assembly for a disc drive comprising a drive shaft with a centering hub and support plate which interfit in a manner to support and center a disc pack on the disc drive.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: February 10, 1976
    Assignee: Information Storage Systems, Inc.
    Inventor: Robert H. Caletti