Patents
US 11193703 B1: Dome-loaded back pressure regulator with setpoint pressure energized by process fluid
- Granted
- 2021-12-07
- Filed
- 2018-05-10 application 15976495
- Type
- Utility · 12 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method of operating a thermal system including at least a compressor, a condenser, a flow control valve, and at least one heat exchanger connected in a closed fluid loop charged with refrigerant. The method includes: regulating refrigerant pressure at a selected point within the fluid loop using a pressure regulating apparatus including: a main pressure regulator including a dome in fluid communication with a diaphragm that seals directly against at least one process void and at least one vent void; and a pilot pressure regulator in fluid communication with the dome so as to provide fluid thereto at a setpoint pressure. The setpoint pressure is maintained by the pilot pressure regulator utilizing refrigerant tapped from the fluid loop The refrigerant is tapped from a point upstream of the main pressure regulator and tapped refrigerant is returned to the fluid loop downstream of the main pressure regulator.
Source: PVGPATDIS, file of 2026-04-10 (ipg211207.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Equilibar, LLC 8 patents | US company or organization | Fletcher, NC | EQUILIBAR, LLC State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Ryan Matthew Heffner | Asheville, NC | 7 | PVGPATDIS, file of 2026-04-10 | |
| Eugene Charles Jansen | Fredericksburg, VA | 26 | PVGPATDIS, file of 2026-04-10 | |
| Jeffrey D. Jennings | Hendersonville, NC | 11 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F16K | Valves; taps; cocks; actuating-floats; devices for venting or aerating | F16K31/1266 | PVGPATDIS, file of 2026-04-10 |
| F25B | Refrigeration machines, plants or systems; combined heating and refrigeration systems; heat pump systems | F25B49/02 | 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 |
|---|---|---|---|---|---|
| 2021-09-02 | Assignment Assignment of assignor's interest | HEFFNER, RYAN MATTHEW signed 2021-08-23 JENNINGS, JEFFREY DEAN signed 2021-08-23 JANSEN, EUGENE CHARLES signed 2021-09-01 | EQUILIBAR, LLC FLETCHER, NC | 57368/434 | ECORSEXC, file of 2026-09-25 |
| 2021-05-03 | Security interest Security interest Security interest | EQUILIBAR, LLC signed 2021-04-30 | BMO HARRIS BANK N.A. CHICAGO, IL | 56114/856 | PASDL, file of 2026-10-15 |
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.