Patents by Inventor David Nelson Palmer

David Nelson Palmer 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).

  • Coating material and method
    Patent number: 4071639
    Abstract: A removable temporary coating material for providing scratch protection particularly for nuclear components is disclosed. The coating contains a methacrylic or acrylic/methacrylic polymer in a water vehicle. Selected surfactants, lubricants and reactive solubilizing agents are also included to provide the desired lubrication and scratch resistance and to provide a coating which is readily removed so as to leave no deleterious residue. Techniques for removing and recovering the coating are also disclosed.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: January 31, 1978
    Assignee: Combustion Engineering, Inc.
    Inventors: David Nelson Palmer, Stanley Heikoff
  • Bonding material and method
    Patent number: 4069083
    Abstract: A bonding material is disclosed which is stable at high temperature and radiation levels, which may be conductive and which is particularly suited as a couplant to ultrasonically and electrically couple an ultrasonic or acoustic transducer to a surface. The material comprises a carborane polysiloxane adhesive, a vehicle-solvent which will evaporate such that the bonding material cures by vehicle-solvent release, and a wetting agent. The material may also contain conductive materials which are suitable for the conditions of intended use and may also be enriched in B.sup.11 to avoid the adverse effects of B.sup.10 when subjected to radiation.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: January 17, 1978
    Assignee: Combustion Engineering, Inc.
    Inventor: David Nelson Palmer
  • Ultrasonic coupling method
    Patent number: 3970504
    Abstract: An ultrasonic transducer is adhered to and electrically and ultrasonically coupled with a surface by means of a room temperature vulcanizing material which is stable when subjected to high temperature and radiation levels. The RTV material is formed from either a vinylmethyl or polyphenyl siloxane matrix containing an iron oxide filler-binder, a cross-linking agent and a finely divided, uniformly dispersed conductive powder. The conductive powder for use in radiation environments is either palladium or graphite and it is homogeneously dispersed by using a temporary dispersing agent.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: July 20, 1976
    Assignee: Combustion Engineering, Inc.
    Inventor: David Nelson Palmer
  • Method of preparing conductive room temperature vulcanizing material
    Patent number: 3968055
    Abstract: An RTV material is formed from either a vinylmethyl or polyphenyl siloxane matrix containing an iron oxide filler-binder a cross-linking agent and a finely divided, uniformly dispersed conductive metal powder. The conductive powder for use in radiation environments is either palladium or graphite and it is homogeneously dispersed by using a temporary dispersing agent. The material may be used to ultransonically and electrically couple an ultrasonic transducer to a surface and it is stable under high temperature and radiation levels.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: July 6, 1976
    Assignee: Combustion Engineering, Inc.
    Inventor: David Nelson Palmer