Patents by Inventor Graeme Staniforth

Graeme Staniforth 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).

  • Pipe coupling with interlocked and segmented grip ring
    Patent number: 5188401
    Abstract: A pipe coupling for connecting a pipe (6) to a fitting (5). The coupling comprises an annular assembly (1) incorporating a gripping ring (4) for inserting into a radial gap between the pipe (6) and the fitting (5), and structure (8,9) for applying an axial load to the annular assembly (1) so that the gripping ring (4) is biased radially against the pipe (6). The gripping ring (4) is defined by a plurality of separable segments dimensional such that when the annular assembly (1) is axially compressed each of the segments is biased against the pipe (6).
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: February 23, 1993
    Assignee: WASK-RMF Ltd.
    Inventor: Graeme Staniforth