Patents
US 12480526 B2: Pump with impeller for circulating cooling fluid and related impeller
- Granted
- 2025-11-25
- Filed
- 2023-07-11 application 18220616
- Type
- Utility · 13 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A circulation system is provided to move a coolant liquid in a coolant chamber (44) formed between a housing (40) and a motor shroud (42) of a pump (10) for a fluid being worked upon. The circulation system has a coolant impeller (54) in a coolant impeller chamber (56). The coolant impeller is driven by a drive shaft (20) that also drives a primary impeller (24) that moves the fluid being worked on. The coolant impeller is positioned along the drive shaft between the motor and the primary impeller. The coolant impeller has a wide inner portion (74) and a peripheral base disk (76) that define a radially-offset suction eye (72) and support a plurality of impeller blades (70). A seal spring (86) compressively acts on the inner portion, providing a mechanical seal.
Source: PVGPATDIS, file of 2026-04-10 (ipg251125.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Crane Pumps & Systems PFT Corp. 1 patents | US company or organization | Piqua, OH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Kirk Neer | Saint Paris, OH | 3 | PVGPATDIS, file of 2026-04-10 | |
| Mark Kowalak | Troy, OH | 5 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F04D | Non-positive-displacement pumps | F04D29/5806 | 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 |
|---|---|---|---|---|---|
| 2023-08-16 | Assignment Assignment of assignor's interest | KOWALAK, MARK signed 2023-08-15 NEER, KIRK signed 2023-08-15 | CRANE PUMPS & SYSTEMS PFT CORP. PIQUA, OH | 64601/468 | 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.