High expansion anti-rotation anchor catcher
US11649687B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Mar 29, 2022 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Mar 29, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1078
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A high expansion anti-rotation anchor catcher includes a helical track positioned on an exterior surface of a tubular body. An expandable gripper cage is provided having an axially fixed hub mounted for rotation about the tubular body and an axially movable hub mounted for rotation about the tubular body. Pivoting linkages which support outwardly oriented grippers extend between the axially fixed hub and the axially movable hub. The axially movable hub has a track follower that engages the helical track on the exterior surface of the tubular body. Rotation of the tubular body in a first rotational direction causes the track follower to move along the helical track toward the axially fixed hub, thereby placing the expandable gripper cage in compression and causing the pivoting linkages and grippers to pivot outwardly away from the tubular body to secure the anchor in position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.