Patents
US 12687080 B2: Annular pressure activated downhole tool
- Granted
- 2026-07-21
- Filed
- 2024-03-01 application 18592880
- Type
- Utility · 18 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An annular pressure activated downhole tool has a housing including an outer surface, an inner surface defining a passage, an annular projection projecting into the passage from the inner surface, and an opening. A mandrel extends into the passage. The mandrel has a first end and a second end. A power spring support is detachably connected to the second end of the mandrel in the passage. A power spring is arranged about the mandrel and extends between the power spring support and the annular projection. A trigger housing is arranged in the power spring support. A trigger arranged in the trigger housing selectively engages with the inner surface. The trigger is operable to disengage from the inner surface of the housing, releasing the power spring, and shifting the mandrel along the passage when exposed to a selected annular pressure.
Source: PTBLXML, file of 2026-07-21 (ipgb20260721.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Baker Hughes Oilfield Operations LLC 922 patents | US company or organization | Houston, TX | PTBLXML, file of 2026-07-21 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Gregory L. Hern | Porter, TX | 60 | PTBLXML, file of 2026-07-21 | |
| Tuan Nguyen | Pearland, TX | 35 | PTBLXML, file of 2026-07-21 | |
| Philip M. Gregurek | Katy, TX | 19 | PTBLXML, file of 2026-07-21 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| E21B | Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells | E21B23/042 | PTBLXML, file of 2026-07-21 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2024-03-01 | Assignment Assignment of assignor's interest | HERN, GREGORY L. signed 2022-02-03 NGUYEN, TUAN signed 2022-01-19 GREGUREK, PHILIP M. signed 2022-02-03 | BAKER HUGHES OILFIELD OPERATIONS LLC HOUSTON, TX | 66619/128 | PASDL, file of 2026-08-13 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.