Patents Assigned to Robintech, Inc.
  • Gasket for multiple groove pipe and method of using same
    Patent number: 4223895
    Abstract: A resilient gasket adapter to form a tight seal between pipes, said gasket having a plurality of projections which interact with cooperating pipe structure to retain the gasket in position as pipes are joined. This gasket overcomes the problem of fishmouthing, a situation in which a gasket is pushed out of a retaining groove as pipes are joined.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: September 23, 1980
    Assignee: Robintech, Inc.
    Inventors: James E. Roberts, Jr., James E. Voelker