Patents by Inventor Travers K. Cammack, II

Travers K. Cammack, II 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).

  • High voltage insulating compositions containing phosphorus compounds
    Patent number: 4223071
    Abstract: New high voltage insulating compositions are disclosed. The compositions comprise a polymer (e.g. a polysiloxane, epoxide resin or a polymer of one or more olefins or substituted olefins), an antitracking additive (e.g. an alumina hydrate), and certain phosphorus-containing compounds which have been found to provide the compositions with greatly improved resistance to erosion by high voltage stress. The phosphorus-containing compounds include phosphonates, phosphates, phosphites, phosphinates, phosphonites, phosphinites, phosphine oxides and sulfides, and phosphines, and salts and complexes thereof. The phosphorus-containing compound can react in situ with the polymer or other ingredients of the composition.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: September 16, 1980
    Assignee: Raychem Corporation
    Inventors: Nicodemus E. Boyer, Travers K. Cammack, II, David D. Nyberg
  • High voltage insulating compositions containing phosphorus compounds
    Patent number: 4219607
    Abstract: New high voltage insulating compositions are disclosed. The compositions comprise a polymer (e.g. a polysiloxane, epoxide resin or a polymer of one or more olefins or substituted olefins), an antitracking additive (e.g. an alumina hydrate), and certain phosphorus-containing compounds which have been found to provide the compositions with greatly improved resistance to erosion by high voltage stress. The phosphorus-containing compounds include phosphonates, phosphates, phosphites, phosphinates, phosphonites, phosphinites, phosphine oxides and sulfides, and phosphines, and salts and complexes thereof. The phosphorus-containing compound can react in situ with the polymer or other ingredients of the composition.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: August 26, 1980
    Assignee: Raychem Corporation
    Inventors: Travers K. Cammack, II, David D. Nyberg
  • High voltage insulating compositions containing organic polymerizable phosphorus compounds
    Patent number: 4198310
    Abstract: New high voltage insulating compositions are disclosed. The compositions comprise a polymer (e.g. a polysiloxane, epoxide resin or a polymer of one or more olefins or substituted olefins), an antitracking additive (e.g. an alumina hydrate), and certain organic polymerizable phosphorus-containing compounds which have been found to provide the compositions with greatly improved resistance to erosion by high voltage stress. The phosphorus-containing compounds include phosphonates, phosphates, phosphites, phosphinates, phosphonites, phosphinites, phosphine oxides and sulfides, and phosphines, and salts and complexes thereof. The phosphorus-containing compound can react in situ with the polymer or other ingredients of the composition.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: April 15, 1980
    Assignee: Raychem Corporation
    Inventors: Bernard J. Lyons, Travers K. Cammack, II, David D. Nyberg