Patents by Inventor Gerald A. Daughenbaugh

Gerald A. Daughenbaugh 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 of making low wear glass for magnetic heads
    Patent number: 5055957
    Abstract: A low magnetic isolation closure glass for use in multitrack magnetic tape heads has been prepared by combining a specific lead borosilicate glass with a specific borosilicate glass in a 60/40 weight percent ratio. The glass formed from the combination exhibits compatibility with ferrite and has reduced wear. Controlling the anneal temperature regulates the residual stress of the closure glass produced, and thus, provides some control over the wear characteristics of the glass.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: October 8, 1991
    Assignee: International Business Machines Corporation
    Inventors: Gerald A. Daughenbaugh, Eugene B. Rigby
  • Sandwich type magnetoresistive read head
    Patent number: 4317147
    Abstract: A magnetoresistive head assembly comprises a silicon substrate, a magnetoresistive element mounted on the substrate, and sapphire members formed around said substrate in a sandwich type configuration. The portion of the head which interacts in transducing relation with a magnetic medium is so configured as to realize improved wear characteristics as well as good heat dissipation with low thermal noise.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: February 23, 1982
    Assignee: International Business Machines Corporation
    Inventors: Gerald A. Daughenbaugh, Philip W. Koob, Arthur E. Moxley, Joseph E. Wallace
  • Wear resistant magnetorestrictive head
    Patent number: 4225892
    Abstract: An MR head is disclosed in which the MR element is deposited onto a sapphire substrate with a particular crystallographic orientation and a sapphire closure piece also having a particular crystallographic orientation is used. The substrate has the MR element deposited onto either the {0001} or the {1120} plane with the {1100} plane being oriented as the wear surface. The closure piece has either the {1120} or the {0001} plane facing the MR material and the {1100} plane oriented as the wear surface.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: September 30, 1980
    Assignee: International Business Machines Corporation
    Inventors: Roger D. Bassett, Gerald A. Daughenbaugh, Davis S. Fields, Jr., Wayne McCormick, Rhodes W. Polleys, Ralph D. Silkensen, Gerald Steving