Patents by Inventor Laurence E. Bernat

Laurence E. Bernat 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).

  • Mixable room temperature castable polyurethane system
    Publication number: 20020128422
    Abstract: The present invention relates to a polyurethane compound which has particular utility as a potting compound for fan exit guide vane assemblies of commercial gas turbine engines. The polyurethane compound comprises a formulation of polyurethane prepolymers mixed with an aromatic amine curing agent (hardener) in a volumetric mix ratio in the range of from about 0.9:1 to about 1:1. The polyurethane prepolymer consists of a blend of different polyethers based on diphenylmethane diisocyanate (MDI). The amine curing agent is a blend of oligomeric diamines with an aromatic diamine with a catalytic component. Both of the blends, in an uncured state, are liquid at room temperature.
    Type: Application
    Filed: February 26, 2002
    Publication date: September 12, 2002
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: John W. Putnam, Laurence E. Bernat, John P. Wesson, John H. Vontell
  • Mixable room temperature castable polyurethane system
    Patent number: 6420509
    Abstract: The present invention relates to a polyurethane compound which has particular utility as a potting compound for fan exit guide vane assemblies of commercial gas turbine engines. The polyurethane compound comprises a formulation of polyurethane prepolymers mixed with an aromatic amine curing agent (hardener) in a volumetric mix ratio in the range of from about 0.9:1 to about 1:1. The polyurethane prepolymer consists of a blend of different polyethers based on diphenylmethane diisocyanate (MDI). The amine curing agent is a blend of oligomeric diamines with an aromatic diamine with a catalytic component. Both of the blends, in an uncured state, are liquid at room temperature.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: July 16, 2002
    Assignee: United Technologies Corporation
    Inventors: John W. Putnam, Laurence E. Bernat, John P. Wesson, John H. Vontell