Patents by Inventor Larry A. Wank

Larry A. Wank 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).

  • Process for densifying a ceramic part
    Patent number: 5039464
    Abstract: A process for densifying a ceramic part includes creating an oxygen-containing sealed atmosphere, heating and pressurizing a ceramic part within the oxygen-containing sealed atmosphere to a high temperature and a high pressure, soaking the part at the high temperature and high pressure, and then cooling the part to ambient temperature and ambient pressure.
    Type: Grant
    Filed: May 21, 1987
    Date of Patent: August 13, 1991
    Assignee: North American Philips Corporation
    Inventors: Larry A. Wank, Joseph G. Braitling, Marie Kaczenski
  • Composition of matter for use in manufacturing non-magnetic parts of a magnetic head and method of manufacturing the composition
    Patent number: 4489168
    Abstract: A nonmagnetic material for use in a magnetic head which has a composition which, by weight, is between 10 and 30% calcium oxide and between 70 and 90% titanium dioxide and up to 2% zirconium dioxide. The invention also includes a method of manufacturing a nonmagnetic material which comprises the steps of providing a quantity of calcium oxide, providing a quantity of titanium dioxide, and milling said calcium oxide and titanium dioxide with zirconium dioxide balls to produce a mixture which includes zirconium dioxide.
    Type: Grant
    Filed: October 27, 1983
    Date of Patent: December 18, 1984
    Assignee: North American Philips Corporation
    Inventors: Larry A. Wank, Joseph G. Braitling
  • Magnetic head pole piece mount of TiO.sub.2 -CaO
    Patent number: 4443825
    Abstract: A magnetic head has first and second pole pieces having a magnetic gap disposed therebetween. The pole pieces are mounted by a nonmagnetic material having a composition which, by weight, is between 10 and 30% calcium oxide and between 70 and 90% titanium dioxide and up to 2% zirconium dioxide.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: April 17, 1984
    Assignee: North American Philips Corporation
    Inventors: Larry A. Wank, Joseph G. Braitling
  • Method of manufacturing a magnetic head
    Patent number: 3943624
    Abstract: A method for manufacturing a magnetic head having at least one ferrite pole tip pair. The tips of each pair are separated by non-magnetic gap of a desired length and the method in accordance with the invention utilizes tips having generally planar surfaces. An elongated apex forming channel is formed in one of the pole tips and an elongated reservoir channel is formed in the same tip in generally parallel relationship. The reservoir channel is filled with glass and polished so that the glass therein extends in co-planar relationship to the generally planar surface of the tip having the reservoir channel therein. The generally planar surfaces are placed in opposed spaced relationship and a quantity of glass is disposed in the apex forming channel. All of the glass and both of the tips are heated until the glass from the channels flows into the space intermediate the generally planar faces of the tips.
    Type: Grant
    Filed: January 24, 1975
    Date of Patent: March 16, 1976
    Assignee: U. S. Philips Corporation
    Inventor: Larry Wank