Patents Represented by Attorney G. A. Grove
  • Patent number: 3978128
    Abstract: In accordance with a preferred embodiment of this invention, amines may be efficiently recovered from the aqueous vapor produced by a high temperature hydrolytic decomposition of polyurethane by the following steps: 1) spraying the vapor with a relatively cool aqueous dispersion containing about 5 to 20% by weight of a solvent such as aniline or benzyl alcohol, 2) allowing the resulting effluent to settle into an amine rich organic phase which is separated from an aqueous phase by a clean interface, 3) separating the two phases, and then 4) distilling the organic phase to recover the desired amine product. The spraying may be conducted at atmospheric pressure and at a temperature within the range of 35.degree. to 90.degree. C. The majority of the solvent is also recovered during the distillation of the organic phase. The aqueous phase may also be distilled to recover additional amines and water, which may then be recycled.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: August 31, 1976
    Assignee: General Motors Corporation
    Inventors: William C. Meluch, Gregory A. Campbell
  • Patent number: 3939081
    Abstract: In accordance with a preferred embodiment of this invention a load supporting lubricant is formed by combining from about 40% to about 60% by volume of a petroleum grease with the balance being small, hard, uniformly sized, steel spheres dispersed throughout the grease. The diameter of the spheres should be within the range of from about 1/2 to about 3/4 millimeters (hereinafter mm) to achieve the minimum coefficient of static friction which is typically about 0.001 or less. When disposed between slidably engaged surfaces, each of said spheres is free to roll at random as one surface moves relative to the other.
    Type: Grant
    Filed: January 29, 1975
    Date of Patent: February 17, 1976
    Assignee: General Motors Corporation
    Inventors: Arnold O. DeHart, Richard C. Rosenberg, Edward G. Trachman