Patents by Inventor Eric Robert Wallace

Eric Robert Wallace 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).

  • Joining of metal surfaces
    Patent number: 3951328
    Abstract: In methods of joining metal surfaces involving heating to a temperature above about 560.degree.C, the use of a flux comprising a mixture of potassium fluoaluminates. Particularly for brazing aluminum, a flux consisting essentially of potassium fluoaluminate complexes (e.g. KAlF.sub.4 and K.sub.3 AlF.sub.6) may be employed, having a composition corresponding to an AlF.sub.3 /KF ratio, in parts by weight, between about 65:35 and about 45:55. The flux is essentially free of unreacted potassium fluoride and may be in divided solid form.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: April 20, 1976
    Assignee: Alcan Research and Development Limited
    Inventors: Eric Robert Wallace, Ernest William Dewing