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US 4,892,280 AGranted
Clamping devices for use with elongate members
AssigneeHunting Oilfield Services Limited
InventorsJohn D. McGugan, William A. Turner, Robert A. M. Hunt
Life of this patent
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AssigneeHunting Oilfield Services Limited
InventorsJohn D. McGugan, William A. Turner, Robert A. M. Hunt
Estimating the term…
A clamping device for clamping on to an elongate member, e.g. for supporting a component on the member or for strengthening the member itself, comprises an annular shell for surrounding the member, the shell being formed by a plurality of generally part annular segments, each segment having generally axially extending edges provided with outwardly projecting ribs, juxtaposed ribs of adjacent segments being engaged by engagement means to hold the segments around the elongate member. The ribs are generally wedge shaped in the axial direction of the shell. The engagement members have grooves for receiving and engaging a pair of juxtaposed ribs, the grooves having an overall shape corresponding to shape of the pair of juxtaposed ribs and are slidable axially along the ribs to draw the ribs and segments together around the elongate member. The inner surface of the shell may have a shape corresponding to that of the elongate member for engagement therewith directly or through a resiliently compressible layer, the clamping force being applied to the shell by engagement of the engagement members with the ribs, or wedge members may be provided between the shell and the elongate member, relative axial movement between the wedge members and the shell producing the required clamping stress in the shell.
A clamping device for clamping onto an elongate member comprising an annular shell for surrounding the elongate member and formed by a plurality of generally part annular segments, each segment having generally axially extending edges, each edge being provided with an outwardly projecting rib extending axially therealong, the ribs of adjacent segments being in use juxtaposed, engagement members for engaging each pair of juxtaposed ribs for holding the segments together around the elongate member, the engagement members being slidable longitudinally of the ribs into full engagement with the respective pairs of juxtaposed ribs, wherein part at least of the inner surface of the shell is frustoconical and wedge means are provided for positioning between the shell and the elongate member to stress said part of the shell to clamp the shell around the elongate member, the wedge means comprising a plurality of axially extending, circumferentially spaced wedge members, each having an inner surface shaped to engage the surface of the elongate member and a part frustoconical outer surface corresponding to the frustoconical inner surface of said shell, said wedge members being axially movable relative to the shell for adjusting the force applied by the shell to the elongate member.
A clamping device for clamping onto an elongate member comprising an annular shell for surrounding the elongate member and formed by a plurality of generally part annular segments, each segment having generally axially extending edges, each edge being provided with an outwardly projecting rib extending axially therealong, the ribs of adjacent segments being in use juxtaposed, engagement members for engaging each pair of juxtaposed ribs for holding the segments together around the elongate member, the engagement members being slidable longitudinally of the ribs into full engagement with the respective pairs of juxtaposed ribs, each pair of juxtaposed ribs being shaped so that adjacent segments are progressively drawn together round the elongate member as the engagement members are slid axially along the ribs into full engagement therewith, wherein part at least of the inner surface of the shell is generally frustoconical and wedge means are provided for positioning between the shell and the elongate member to stress said part at least of the shell to clamp the shell around the elongate member, the wedge means comprising a plurality of axially extending, circumferentially spaced wedge members, each having an inner surface shaped to engage the surface of the elongate member and a part frustoconical outer surface corresponding to and for contacting said frustoconical inner surface of said shell, said wedge members being adjustably positionable axially relative to the shell.
A clamping device for clamping onto an elongate member comprising an annular shell for surrounding the elongate member and formed by a plurality of generally part annular segments, each segment having generally axially extending edges, each edge being provided with an outwardly projecting rib extending axially therealong, the ribs of adjacent segments being in use juxtaposed, engagement members for engaging each pair of juxtaposed ribs for holding the segments together around the elongate member, the engagement members being slidable longitudinally of the ribs into full engagement with the respective pairs of juxtaposed ribs, wherein part at least of the inner surface of the shell is generally frustoconical and wedge means are provided for positioning between the shell and the elongate member, the wedge means comprising a plurality of axially extending, circumferentially spaced wedge members, each having an inner surface shaped to engage the surface of the elongate member and a part generally frustoconical outer surface corresponding to and for contacting said frustoconical inner surface of the shell, the outer surface of each wedge member and said frustoconical part of the inner surface of the shell being stepped and comprising a plurality of axially spaced part frustoconical surfaces, the wedge members being adjustably positionable axially relative to the shell for adjusting the clamping force of the shell around the elongate member.
Dependencies are inferred from the claim text.