Patents
US 10516347 B1: Load detection method and apparatus
- Granted
- 2019-12-24
- Filed
- 2019-03-27 application 16366581
- Type
- Utility · 21 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Safe detection of an external load attached to an AC power outlet of a power supply stands out as one advantage of the power supply apparatus and method contemplated herein, although other advantages flow therefrom. Not least among the other advantages are a simplicity of design offering an economical and robust mechanism for detecting external loads. The contemplated mechanism relies on the application of a DC voltage to one electrical phase of the AC power outlet and the coupling of that voltage to the other electrical phase of the AC power outlet through an interconnecting resistor. With both phases respectively coupled to voltage divider circuits nominally matched in value, the divided down voltages measured from the respective phases will differ in dependence on the relative size of the interconnecting resistor and the resistive value of any load attached to the AC power outlet.
Source: PVGPATDIS, file of 2026-04-10 (ipg191224.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| OMRON AUTOMOTIVE ELECTRONICS CO., LTD. 151 patents | Foreign company or organization | Ebeye, MH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Lucretiu Pisau | Highland Park, IL | 3 | PVGPATDIS, file of 2026-04-10 | |
| Sudarshan Ravindran | St. Charles, IL | 1 | PVGPATDIS, file of 2026-04-10 | |
| Srivatsan Jayaramasundaram | Naperville, IL | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H02M | Apparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems; conversion of dc or ac input power into surge output power; control or regulation thereof | H02M7/53871 | PVGPATDIS, file of 2026-04-10 |
| G01R | Measuring electric variables; measuring magnetic variables | G01R15/04 | PVGPATDIS, file of 2026-04-10 |
| Y02B | Climate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications | Y02B70/10 | 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 |
|---|---|---|---|---|---|
| 2019-09-16 | Assignment Assignment of assignor's interest | JAYARAMASUNDARAM, SRIVATSAN signed 2019-09-13 RAVINDRAN, SUDARSHAN signed 2019-09-13 PISAU, LUCRETIU signed 2019-09-16 | OMRON AUTOMOTIVE ELECTRONICS CO., LTD. AICHI | 50383/6 | 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.