Patents
US 8182252 B2: Progressing cavity pump with split stator
- Granted
- 2012-05-22
- Filed
- 2007-10-30 application 11928842
- Type
- Utility · 2 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A progressing cavity pump system including a rotor and a stator having an inner cavity. The rotor is rotationally disposed inside the inner cavity of the stator such that rotation of the rotor relative to the stator causes material in the inner cavity to be pumped through the stator. The stator includes at least two radially separable stator portions such that when at least one of the stator portions is removed, at least one of the rotor or the inner cavity is exposed.
Source: PVGPATDIS, file of 2026-04-10 (ipg120522.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| MOYNO, INC. 8 patents | US company or organization | Springfield, OH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Michael Duane Amburgey | London, OH | 6 | PVGPATDIS, file of 2026-04-10 | |
| Yuan Yu Cheng | Fairborn, OH | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F01C | Rotary-piston or oscillating-piston machines or engines | F01C21/007 | 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 | F04C2/1075 | 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 |
|---|---|---|---|---|---|
| 2008-01-16 | Assignment Assignment of assignor's interest | AMBURGEY, MICHAEL D. signed 2008-01-10 CHENG, YUAN YU signed 2008-01-10 | MOYNO, INC. SPRINGFIELD, OH | 20372/766 | 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.