Patents
US 11619235 B2: Dual priming system for a pump
- Granted
- 2023-04-04
- Filed
- 2020-08-17 application 16995264
- Type
- Utility · 12 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A dual priming system connected with a centrifugal pump to evacuate gas therefrom includes a positive displacement pump fluidly connectable with the centrifugal pump and a venturi fluidly connectable with the centrifugal pump in parallel with the positive displacement pump. The dual priming system is operational in a first mode, wherein the positive displacement pump is inactive and the venturi is activated, and a second mode, wherein the positive displacement pump is activated and the venturi is activated.
Source: PVGPATDIS, file of 2026-04-10 (ipg230404_r1.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| HALE PRODUCTS, INC. 23 patents | US company or organization | Ocala, FL | HALE PRODUCTS, INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Michael A. Laskaris | Collegeville, PA | 13 | PVGPATDIS, file of 2026-04-10 | |
| David L. Miller | Marble Hall, PA | 2 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F04D | Non-positive-displacement pumps | F04D9/041 | PVGPATDIS, file of 2026-04-10 |
| A62C | Fire-fighting | A62C27/00 | 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 |
|---|---|---|---|---|---|
| 2020-08-17 | Assignment Assignment of assignor's interest | MILLER, DAVID LAMONT signed 2020-08-12 LASKARIS, MICHAEL A signed 2020-08-14 | HALE PRODUCTS, INC. OCALA, FL | 53514/574 | 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.