Bit for removing a plug from a branch conduit
US11724318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2021 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Jan 25, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/1141
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In one aspect, a bit for removing a plug from a branch conduit extending from a main pipe has a boring head at a distal end portion of a shaft configured to bore a pilot hole in the plug. A catch on the shaft is configured to pass through the pilot hole and then engage the plug after the pilot hole is bored for pushing the plug proximally. A burr proximal of the boring head is configured to remove a portion of the plug to separate a removable section from a durable section of the plug. In a method of restoring fluid communication between a main pipe and a branch conduit, the bit bores a pilot hole with the boring head, separates the removable section from the durable section with the burr, and then with the catch, withdraws the removable section only.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.