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US 2021/0262291 A1Published application
Dual-Member Pipe Assembly
AssigneeThe Charles Machine Works, Inc.
InventorsGreg L. Slaughter, Jr., Joseph G. Greenlee
Life of this patent
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Abstract
A pipe assembly used in horizontal directional drilling operations. The pipe assembly has an outer member, an inner member, and first removable collar. The inner member has a polygonal outer profile of uniform shape along its length and is partially contained within the outer member. The first removable collar is supported on the inner member within the outer member and limits relative axial movement of the inner member and the outer member.
Claims20
A pipe string, comprising:
- an outer string formed from a plurality of identical hollow outer pipes arranged in end-to end and torque-transmitting engagement;
- and
- an inner string telescopically received within the outer string and formed from a plurality of identical hollow inner pipes arranged in an end-to-end relationship, each adjacent pair of inner pipes interconnected by a hollow sleeve having a pair of opposed ends of identical cross-sectional profile, each end of each sleeve receiving one end of an inner pipe in torque-transmitting engagement.
A kit, comprising:
- a plurality of identical hollow outer pipes;
- a plurality of identical hollow inner pipes, each inner pipe telescopically receivable within one of the outer pipes;
- and
- a plurality of identical hollow sleeves, each sleeve having a pair of opposed ends of identical cross-sectional profile, each end of each sleeve adapted to receive one end of an inner pipe in torque-transmitting engagement.
1 more element
Dependencies are inferred from the claim text.