Patents
US 12252940 B2: MWD isolation device
- Granted
- 2025-03-18
- Filed
- 2024-06-27 application 18755958
- Type
- Utility · 18 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An isolator for use with a drill string comprises a low frequency portion and a high frequency portion coupled thereto. The low frequency portion comprises a low frequency mandrel and a low frequency housing that defines a chamber in conjunction therewith. The chamber may include a low frequency damping element disposed therein. The low frequency mandrel may be slidably received in the low frequency housing. The high frequency portion includes a high frequency housing including at least one longitudinal keyway, a high frequency mandrel having first and second ends and including at least one radially extending longitudinal key disposed in the at least one keyway; and at least one longitudinal damping element disposed in a keyway alongside the at least one key. The first anti-extrusion ring and the longitudinal damping element may be longitudinally compressed between the high frequency mandrel and a nut adjustably coupled to the high frequency mandrel.
Source: PVGPATDIS, file of 2026-04-10 (ipg250318.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| TURBO DRILL INDUSTRIES, INC. 15 patents | US company or organization | Conroe, TX | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Chad Feddema | Conroe, TX | 16 | PVGPATDIS, file of 2026-04-10 |
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 | E21B17/07 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2024-06-27 | Assignment Assignment of assignor's interest | FEDDEMA, CHAD signed 2023-08-31 | TURBO DRILL INDUSTRIES, INC. CONROE, TX | 67856/287 | ECORSEXC, file of 2026-09-25 |
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.