Plug counter and method
US8479823B2 · kind B2 · utility
19Cited by
105References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 2009 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Aug 7, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/142
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A plug counter including a j-slot sleeve; a helix sleeve in operable communication with the j-slot sleeve such that axial movement of the j-slot sleeve causes rotational movement of the helix sleeve; an anti-rotation sleeve disposed about the helix sleeve and having a keyway therein; and a key disposed in the keyway and responsive to movement of the helix sleeve and method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.