Internal thread chase
US10596648B2 · kind B2 · utility
0Cited by
13References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2017 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Sep 21, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23G2210/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Disclosed is a thread chase or tap capable of being inserted past damaged threads of a female threaded coupling and then rotated back to repair the damaged threads. The thread chase can be selectively expanded to engage chase blocks having cutting teeth against threads. Thereafter, a user can rotate the thread chase in a direction sufficient to cause the thread chase to move axially out of the female threaded coupling. Upon doing so, the chase blocks can be pushed outwardly and engage undamaged threads, and rotated so as to move upward and repair damaged threads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.