Patents by Inventor Robert W. Jardine

Robert W. Jardine 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).

  • Patent number: 5121946
    Abstract: A pipe repair or joining collar comprising a pair of rigid arcuate casing members (10) which may be drawn together around a damaged pipe or a pair of pipe ends with the interposition of one or more elastomeric arcuate seals (13) and wedges (17) located between the casing members and the seals and adapted to slide inwardly and generally tangentially to force the seals radially inwards to ensure sealing engagement with the pipe or pipe ends, mutually abutting longitudinal resilient sealing strips (16) projecting, at least in part, from opposed faces of the wedges (17) in a manner such that in at least one region of each pair one of the sealing strips is substantially flush with its associated face whilst the other projects from it so that during assembly the projecting strip may ride laterally onto the flush strip to ensure lateral alignment of the casing members.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: June 16, 1992
    Assignee: E. Peart & Company Limited
    Inventor: Robert W. Jardine
  • Patent number: 5037141
    Abstract: A device for jointing or closing pipe ends and comprising a single or double-ended rigid or semi-rigid tubular body (10) adapted to retain and protect a single or double-ended elastomeric sleeve (12) with a resilient annular collar (13) protruding from the body at the or each end. The sleeve (12) surrounds the pipe to be joined or closed, and a clamping ring consisting of a pair of semi-circular segments (14) is closed around the collar (13) with bolts (15) and diametrically opposed wedge-like members (18) which are in sliding engagement with the internal surfaces of the clamping ring segments (14) thus to be forced inwardly together with the latter when the bolts (15) are tightened. This ensures a substantially unform radial compression of the collar (13) around the pipe wall.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: August 6, 1991
    Assignee: E. Peart & Company Limited
    Inventor: Robert W. Jardine