Patents Examined by Calleb Weston
  • Heat-recoverable coupler
    Patent number: 4931116
    Abstract: A coupler for joining polymeric pipes comprises a generally cylindrical radially heat-shrinkable member which is composed of a conductive polymer. To recover the coupler, current is passed axially through the coupler via electrodes. The coupler has a center portion of increased wall thickness and in this way, when there is a gap between the pipes, overheating of the center portion of the coupler is avoided.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: June 5, 1990
    Assignee: Raychem Corporation
    Inventor: Nachum Rosenzweig