Patents by Inventor David G. Shaw

David G. Shaw 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).

  • Non-halogenated impregnant for capacitors comprising an aromatic carboxylic acid ester and an alkene
    Patent number: 4290926
    Abstract: An electrical capacitor is impregnated with a base impregnant of a non-halogenated aromatic liquid which absorbs gas in the range of 40.degree. to 100.degree. to which is added a material that is a greater gas absorber over the same temperature range.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: September 22, 1981
    Assignee: General Electric Company
    Inventor: David G. Shaw
  • Process for impregnating a capacitor with a non-halogenated impregnant
    Patent number: 4190682
    Abstract: A process for impregnating capacitors with a gas absorbing impregnant is disclosed including the steps of purefying a phthalate ester by adsorptive filtration and adding 5 to 30% by volume of an alkene having from 10 to less than 20 carbon atoms and 0.1 to 10% by volume of an epoxy stabilizer to the phthalate ester prior to impregnating the capacitor.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: February 26, 1980
    Assignee: General Electric Company
    Inventor: David G. Shaw
  • Capacitor with a stabilized non halogenated impregnant
    Patent number: 4142223
    Abstract: An electrical capacitor is impregnated with a base impregnant of a non halogenated aromatic liquid which absorbs gas in the range of 40.degree. to 100.degree. C. to which is added a material that is a greater gas absorber over the same temperature range.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: February 27, 1979
    Assignee: General Electric Company
    Inventor: David G. Shaw
  • Method of impregnating a capacitor
    Patent number: 4117579
    Abstract: Between about 0.01 and 10.0% by weight of an antioxidant, and between about 0.1 and 10% by weight of an epoxide are added to a liquid aromatic ester prior to refining or purification of the ester and prior to the use of the ester to impregnate a capacitor.
    Type: Grant
    Filed: July 20, 1977
    Date of Patent: October 3, 1978
    Assignee: General Electric Company
    Inventors: David G. Shaw, Vandos Shedigian
  • Method of fabricating improved capacitors and transformers
    Patent number: 4054680
    Abstract: Before impregnation with fluid a capacitor roll, or a transformer core and coil, is filled with a monomeric gas that is thereafter polymerized, in situ, in a plasma discharge. Formation of solid polymer occurs at the regions of most intense electric field, thereby raising both corona-start and operating voltage for these devices.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: October 18, 1977
    Assignee: General Electric Company
    Inventors: Amandus H. Sharbaugh, David G. Shaw