Patents Assigned to Applied Magnetics Corp.
  • Patent number: 5654850
    Abstract: A slider of the type for use with a rotatable magnetic disk is disclosed. The slider has two ends and a bottom surface which includes an air bearing surface. An adhesive layer and continuous coating of carbon is located on the air bearing surface. A method of sputter depositing this continuous layer of carbon upon the air bearing surface of the slider is also provided. The continuous layer of carbon is crown-shaped and deposited using the sputtering technique. The carbon is directed from a source at the air bearing surface of a slider. A mask is placed between the source and slider so that the carbon is deposited in a crown shape. When the slider is viewed from front to rear the maximum depth of the coating is less than about 6 to 10 nm, while at the ends of the slider the coating depth is near 0 nm. The resistivity of the protective carbon layer is controlled for the additional benefit of protection from damages by electrostatic discharge.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: August 5, 1997
    Assignee: Applied Magnetics Corp.
    Inventors: Srinivasan K. Ganapathi, Tim O. Cheung, Paul D. Frank, Robert B. Love, Allan F. Rice, Paul W. Smith
  • Patent number: 4651102
    Abstract: A method of converting a pulse train of electrical signals having a frequency within a known frequency range into digital signals is shown.
    Type: Grant
    Filed: November 1, 1985
    Date of Patent: March 17, 1987
    Assignee: Applied Magnetics Corp.
    Inventor: Michael Inbar
  • Patent number: 4651105
    Abstract: A digital peak detecting circuit for receiving a pulse train of electrical signals having a frequency within a known frequency range and for converting the same into digital signals is shown. The digital peak detecting circuit includes an input circuit having a phase-locked loop for producing clock pulses at a frequency which is a preselected integer of the electrical signals frequency and for deriving therefrom an analog input signal. A pulse control circuit receives and counts a predetermined number of clock pulses and produces count enabling signals. A peak detecting circuit is provided which includes a comparator which has the analog input signal and a analog output signal voltage applied to the inputs thereof and which has an output coupled to the pulse control circuit.
    Type: Grant
    Filed: November 1, 1985
    Date of Patent: March 17, 1987
    Assignee: Applied Magnetics Corp.
    Inventor: Michael Inbar
  • Patent number: 4644429
    Abstract: Apparatus for traversing a magnetic head-loading arm assembly onto a pair of spaced rotating discs is shown. The assembly comprises two parallel loading arms, one of which has two pairs of spaced gimbaled magnetic recording and reproducing head assemblies resiliently supported thereon from the upper and lower side thereof. The apparatus further includes a comb assembly having a pivotally mounted first canted sweep arm formed of first and second fixed cam guides each having a pair of opposed, spaced cam blade assemblies. The first cam guide is located at the end of the first canted sweep arm and the second fixed cam guide is located at a predetermined location along the arm intermediate the first cam guide and the pivot point of the first canted sweep arm. Each cam assembly has an upper and lower contoured blade defining a capture gap formed of a thin section, a sloped ramp and a thick section defining a clamping throat.
    Type: Grant
    Filed: May 26, 1983
    Date of Patent: February 17, 1987
    Assignee: Applied Magnetics Corp.
    Inventor: Craig L. Boe
  • Patent number: 4633810
    Abstract: Apparatus for accurately registering a first member in an interdependent relationship to a second member including prealigned registration members selectively mounted on the second member and having a first elongated member which defines a primary registration point, a second elongated member which defines a different secondary registration point, which together define a line of rotation, a third elongated member which defines a tertiary registration point located at a point other than on the line of rotation wherein each of the elongated members are positioned in a predetermined pattern and reference registration members mounted on the first member having a first receiving member which defines a primary reference point which receives and engages the first elongated member superimposing the primary registration point on the primary reference point, a second receiving member defining a reference line segment which extends in a preselected direction wherein the second receiving member receives and engages the s
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: January 6, 1987
    Assignee: Applied Magnetics Corp.
    Inventor: Richard T. Martin