Patents
US 11149497 B2: Drilling motor with bypass and method
- Granted
- 2021-10-19
- Filed
- 2017-10-23 application 15790509
- Type
- Utility · 9 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A downhole drilling motor includes a motor housing having an inner bore and an outer surface. A power section includes a stator elastomer at least partially disposed within the inner bore of the motor housing. A bearing section includes an upper bearing at least partially disposed within the inner bore of the motor housing. The motor housing further includes an opening extending from the inner bore to the outer surface to provide a bypass fluid path for a fluid in the inner bore. The opening is disposed on the motor housing between a lower end of the stator elastomer and an upper end of the upper bearing. The bypass fluid path allows the downhole drilling motor to accommodate a higher flow rate of a fluid through the stator elastomer of the power section than through the upper bearing of the bearing section.
Source: PVGPATDIS, file of 2026-04-10 (ipg211019.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Rival Downhole Tools LC 11 patents | US company or organization | Houston, TX | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Gunther HH von Gynz-Rekowski | Conroe, TX | 42 | 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 | E21B4/02 | PVGPATDIS, file of 2026-04-10 |
| F04C | Rotary-piston, or oscillating-piston, positive-displacement machines for liquids ; rotary-piston, or oscillating-piston, positive-displacement pumps | F04C2/1071 | 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 |
|---|---|---|---|---|---|
| 2025-03-12 | Release of security interest Release of security interest | BANC OF CALIFORNIA F/K/A PACIFIC WESTERN BANK D/B/A PACIFIC WESTERN BUSINESS FINANCE signed 2025-03-12 | RIVAL DOWNHOLE TOOLS LLC HOUSTON, TX | 70484/567 | ECORSEXC, file of 2026-09-25 |
| 2022-10-28 | Security interest Security interest Security interest | RIVAL DOWNHOLE TOOLS LLC signed 2022-10-13 | PACIFIC WESTERN BANK D/B/A PACIFIC WESTERN BUSINESS FINANCE PHOENIX, AZ | 61586/149 | ECORSEXC, file of 2026-09-25 |
| 2019-05-06 | Assignment Assignment of assignor's interest | ASHMIN HOLDING LLC signed 2019-04-26 | RIVAL DOWNHOLE TOOLS LC HOUSTON, TX | 49094/110 | ECORSEXC, file of 2026-09-25 |
| 2017-10-24 | Assignment Assignment of assignor's interest | VON GYNZ-REKOWSKI, GUNTHER HH signed 2016-12-16 | ASHMIN HOLDING, LLC CONROE, TX | 43938/882 | 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.