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US 2001/0040376 A1Published application
Coupling assembly having enhanced axial tension strength
AssigneeThe Lamson & Sessions Co.
InventorsPAUL METCALFE, CRAIG A. HOMBERG, WALTER G. LOCKARD
Life of this patent
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Abstract
A coupling assembly for conduit or pipe comprising a first coupling member, a second coupling member and a locking member. The first coupling member is optionally a tubular component and the second coupling member or coupler is optionally a belled component. The present invention is also optionally provided with an annular sealing member.
Claims15
A coupling assembly for connecting sections of conduit together in a borehole comprising:
- a first coupling member attached to an end of a first conduit, said first coupling member having an outer surface and a circumferential recess in said outer surface;
- a second coupling member attached to an end of a second conduit and adapted for connection with said first coupling member, said second coupling member having an inner surface and an outer surface, said second coupling member having a circumferential groove in said inner surface and a slot in said outer surface, said slot positioned to provide access to said groove, whereby when said first coupling member and said second coupling member are in a connected state said groove aligns opposite said recess to form a passageway;
- and
- a locking member adapted for insertion into said slot and into said passageway, said locking member providing resistence against forces tending to separate said first coupling member from said second coupling member when inserted in said passageway.
1 more element
A conduit for installation in a borehole comprising:
- a first coupling member attached to a first end of said conduit, said first coupling member having an outer surface and a circumferential recess in said outer surface;
- a second coupling member attached to a second end of said conduit and adapted for connection with a second conduit having a first coupling member with a recess in an outer surface, said second coupling member having an inner surface and an outer surface, said second coupling member having a circumferential groove in said inner surface and a slot in said outer surface, said slot positioned to provide access to said groove, whereby when said second coupling member is in a connected state with said first coupling member of said second conduit said groove aligns opposite said recess in said second conduit to form a first passageway and
- a locking member adapted for insertion into said slot and into said first passageway, said locking member providing resistence against forces tending to separate said conduit section from said second conduit when inserted in said first passageway.
A method of assembling conduits in a borehole comprising the steps of:
- providing to said borehole a first conduit having a first coupling member, a second conduit having a second coupling member, a sealing member, and a locking member, said first coupling member having an outer surface and a circumferential recess in said outer surface, said second coupling member adapted for connection with said first coupling member and having an inner surface and an outer surface, said second coupling member having a first circumferential groove in said inner surface, a second circumferential groove in said inner surface, and a slot in said outer surface, said slot positioned to provide access to said first groove, whereby when said first coupling member and said second coupling member are in a connected state said first groove aligns opposite said recess to form a passageway, said locking member adapted for insertion into said slot and into said passageway, said sealing member adapted for positioning within said second groove when said first coupling member and said second coupling member are in a connected state;
- connecting said first coupling member to said second coupling member;
- and installing said locking strap into said passageway.
Dependencies are inferred from the claim text.