Patents
US 10162369 B2: Liquid level control module and apparatus comprising same
- Granted
- 2018-12-25
- Filed
- 2016-07-09 application 15206236
- Type
- Utility · 14 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A liquid level control module comprising an elongated tubular housing immersible through a surface of a liquid and into a bulk volume of the liquid, and first, second, and third electrical switches, and first and second floats movable along the tubular housing. The first electrical switch is disposed within a lower portion of the tubular housing, the second electrical switch is disposed within an intermediate portion of the tubular housing, and the third electrical switch is disposed within an upper portion of the tubular housing. Each of the switches has an open state and a closed state. Motion of the first float relative to the first switch changes its state. Motion of the second float relative to the second switch changes its state, and motion of the second float relative to the third switch changes its state. Thus a two-float module may provide three level control signals.
Source: PVGPATDIS, file of 2026-04-10 (ipg181225.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Liberty Pumps, Inc. 23 patents | US company or organization | Bergen, NY | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Timothy D. McCrossen | Rochester, NY | 7 | PVGPATDIS, file of 2026-04-10 | |
| David M. Williams | Attica, NY | 20 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G05D | Systems for controlling or regulating non-electric variables | G05D9/12 | PVGPATDIS, file of 2026-04-10 |
| G01F | Measuring volume, volume flow, mass flow or liquid level; metering by volume | G01F23/683 | PVGPATDIS, file of 2026-04-10 |
| H01H | Electric switches; relays; selectors; emergency protective devices | H01H36/0006 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T137/7323 | 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 |
|---|---|---|---|---|---|
| 2016-10-13 | Assignment Assignment of assignor's interest | MCCROSSEN, TIMOTHY D. signed 2016-08-26 WILLIAMS, DAVID M. signed 2016-08-26 | LIBERTY PUMPS, INC BERGEN, NY | 40007/516 | 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.