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US 2019/0195414 A1Published application
Pipe replacement system
AssigneeTT Technologies, Inc.
InventorMichael Tjader
Life of this patent
Estimating the term…
Abstract
Pipe replacement devices, and systems are shown. Devices and systems may include jointed cutters and floating cutters to navigate difficult pipe replacement conditions. Devices and systems may also include replacement pipe with pre-installed supply hoses, such as lubricant supply and/or pneumatic supply hoses. Methods of pipe replacement are also described, including splitting old pipe and pulling in new pipe behind the equipment as splitting progresses.
Claims14
A pipe replacement device, comprising:
- an expander;
- an opening in a front of the expander to accept a towing cable;
- a reciprocating hammer coupled behind the expander;
- and
- a jointed cutter that abuts a front end of the expander.
2 more elements
A pipe replacement device, comprising:
- an expander;
- an opening in a front of the expander to accept a towing cable;
- a reciprocating hammer coupled behind the expander;
- and
- a cutter coupled to a front of the expander using a ball joint, the cutter including a plurality of replaceable blades including a portion dimensioned to contact sidewalls of the recess on all sides for a tolerance fit within the recess and removably secured within the recess by a securing material.
2 more elements
A method, comprising:
- driving an expander through a pipe using a reciprocating hammer;
- pulling the reciprocating hammer through the pipe with a cable while concurrently driving the expander with the reciprocating hammer;
- splitting the pipe in front of the expander using a cutter coupled to a front of the expander using a ball joint, the cutter including a plurality of replaceable blades including a portion dimensioned to contact sidewalls of the recess on all sides for a tolerance fit within the recess and removably secured within the recess by a securing material.
Dependencies are inferred from the claim text.