Shear member post shear segment retention apparatus
US9422966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2013 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Aug 15, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B35/005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Shear member designs in various formats are presented with additional features for segment retention and subsequent removal after a shearing event and removal of the tool from a subterranean location. In some embodiments a portion of the shear member is retained by threads so that the segment stays in the part and then can be removed at the surface with putting a notch in the segment and removing it with a screwdriver. In another embodiment a retaining pin in an intersecting bore can hold onto a sheared remnant of the shear pin by pushing the remnant laterally in the bore that it is mounted. Another design for a shear ring uses a split design with the right angle portion of the ring that gets sheared appearing in segments so that the ring can be rapidly snapped into a groove at its outer periphery followed by a retaining cap facilitating removal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.