Patents by Inventor Louis E. Hay

Louis E. Hay 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: 4460338
    Abstract: A mechanically adjustable articulator for mounting poured dental casts used in the fabrication of dentures without the use of mounting plaster, the articulator having central locating pins for entering drilled apertures in the base of the casts, and further having adjustable retaining screws which enter drilled apertures in the perimeter of the casts to retain the casts in fixed position after which the casts may be adjusted to any desired relationship with each other; and a method for drilling and mounting the casts, including a drill jig useful for such purpose.
    Type: Grant
    Filed: July 22, 1982
    Date of Patent: July 17, 1984
    Inventors: Roger W. Mercer, Louis E. Hay
  • Patent number: 4371338
    Abstract: A dental articulator for mounting and adjusting paired dental casts; said articulator having at least one protruding locating pin entering an aperture in the base of each dental cast and having fastening means other than conventional mounting plaster for releasably retaining the dental casts in their mounted position; and further having means for adjusting the upper dental cast in centric anatomical relationship with the lower dental cast.
    Type: Grant
    Filed: July 11, 1979
    Date of Patent: February 1, 1983
    Inventors: Roger W. Mercer, Louis E. Hay
  • Patent number: 4358269
    Abstract: A dental articulator for mounting and adjusting paired dental casts without the use of mounting plaster by means of contoured locating stops engaging suitable cavities formed by cutters in the base of the casts; the articulator being adapted for the rapid removal of, and the remounting of the casts to their originally adjusted positions in the articulator.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: November 9, 1982
    Inventors: Louis E. Hay, Roger W. Mercer
  • Patent number: 4315740
    Abstract: A dental articulator adapted for supporting jigs having an extending screw which engages a female thread in a button embedded in the base of a stone dental cast as opposed to the conventional method of supporting such dental casts by means of plaster. The apparatus and method also provides a means by which the dental cast can be removed for further laboratory processing with the assurance that it can be removed and remounted in the articulator into the precise position and relationship of the initial mounting, and also provides a novel method for embedding a button into a dental cast by forming a cavity and pouring a cold setting material such as plastic into which a screw is inserted while the poured button is in the fluid form before final setting.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: February 16, 1982
    Inventors: Roger W. Mercer, Louis E. Hay
  • Patent number: 4242292
    Abstract: A novel method for embedding a button into a dental cast by forming a cavity and pouring a cold setting material such as a plastic into which a screw is inserted while the poured button is in the fluid form before final setting. The screw has a notch in at least one thread so that the molding material forms an interlock or detent in the notch, which is sheared upon removal of the screw.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: December 30, 1980
    Inventors: Roger W. Mercer, Louis E. Hay
  • Patent number: 4169314
    Abstract: A dental articulator for mounting stone dental casts by means of a screw engaging a threaded aperture in the base of the dental casts in lieu of the prior method of mounting the casts by means of plaster. The threaded apertures may be formed directly into the casts, or by the preferred method of embedding plastic threaded buttons into the stone casts. This mounting method permits a more rapid mounting of the dental casts in the articulator and also permits a very rapid removal and remounting of the casts to their precise prior occlusion position.
    Type: Grant
    Filed: September 27, 1977
    Date of Patent: October 2, 1979
    Inventors: Roger W. Mercer, Louis E. Hay