Patents by Inventor Richard R. Angel

Richard R. Angel 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).

  • Insulated flexible pipe coupling
    Patent number: 4273363
    Abstract: A flexible pipe coupling comprises an annular housing, a nipple member partially submerged in the housing, and an annular elastomeric seal assembly between the nipple and the housing. The nipple is insulated in order to reduce the heat flow to the elastomeric seal from the material falling to the pipe coupling. The pipe coupling can also comprise a means, e.g., an annular ring, for bridging the nipple and housing to provide a constant inside diameter for the coupling. The means can also be insulated in order to aid in reducing the heat flow to the elastomeric seal.
    Type: Grant
    Filed: June 27, 1979
    Date of Patent: June 16, 1981
    Assignee: Phillips Petroleum Company
    Inventor: Richard R. Angel